Conference Contributions

46th IEEE Photovoltaic Specialists Conference 2019, Chicago, USA
A. Herguth

Simulation Study on the Concept of Lifetime-Equivalent Defect Density in the Context of Light-Induced Degradation (LID) Experiments
(Preprint)

9th Silicon PV Conference, 07-11 April 2019, Leuven, Belgium
J. Engelhardt, H. Kromer, G. Hahn, B. Terheiden

Laser Doping from As-deposited CVD Layers for High-Efficiency Crystalline Silicon Solar Cells
(Preprint)

F. Geml, J. Engelhardt, J. Steffens, L. Reinalter, G. Micard, G. Hahn

GD-OES Depth Profiling and Calibration of B Doped Dielectric Layers
(Preprint)

J. Steffens, J. Rinder, G. Hahn, B. Terheiden

Compensation of the Sputter Damage During a-Si Deposition for poly-Si/SiOx Passivating Contacts by Ex-Situ P-Doping
(Preprint)

D. Sperber, F. Furtwängler, A. Herguth, G. Hahn

Does LeTID Occur in c-Si Even Without a Firing Step?
(Preprint)

A. Graf, A. Herguth, G. Hahn

Determination of BO-LID and LeTID Related Activation Energies in Cz-Si and FZ-Si using Constant Injection Conditions
(Preprint)

M. Mörtter, J. Engelhardt, G. Hahn, B. Terheiden

Investigation of Contact Resistivity on a Laser Doped Boron Emitter from CVD Doping Layers
(Preprint)

M. Heilig, J. Engelhardt, G. Hahn, B. Terheiden

Comparison of Laser-Doped Emitters from As-Deposited and Thermally Diffused APCVD Doping Glasses on Silicon Substrates
(Preprint)

A. Herguth                                                  

Simulation Study on the Impact of Boron-Oxygen related Light-Induced Degradation in Different Cell Architectures
(Preprint)

D. Skorka, A. Zuschlag, G. Hahn                                  

Injection Resolved Spatial Lifetime Mapping using Photoluminescence
(Preprint)

35th European Photovoltaic Solar Energy Conference, 24-28 September 2018, Brussels, Belgium
J. Engelhardt, B. Gapp, F. Mutter, G. Hahn, B. Terheiden

Well passivating and highly temperature stable aluminum oxide deposited by atmospheric pressure chemical vapor deposition for PERC and PERT solar cell concepts
(Preprint)

A. Schmid, J. Lindroos, A. Zuschlag, D. Skorka, J. Fritz, G. Hahn

Influence of low-temperature annealing before firing on LeTID in multicrystalline silicon
(Preprint)

M. Fleck, J. Lindroos, A. Zuschlag, G. Hahn

Defect analysis of APCVD gettered multicrystalline silicon
(Preprint)

A. Herguth, C. Derricks, D. Sperber
Evidence of rear surface related degradation in Cz-Si PERC-type solar cells

(Preprint)

C. Fischer, J. Lindroos, A. Zuschlag, G. Hahn

Gettering and passivation of advanced high performance multicrystalline silicon material
(Preprint)

A. Otaegi, D. Skorka, A. Schmid, A. Zuschlag, J.C. Jimeno, G. Hahn

Influence of emitter layers on LeTID kinetics in multicrystalline silicon
(Preprint)

45th IEEE Photovoltaic Specialists Conference & 7th World Conference on Photovoltaic Solar Energy Conversion, 10-15 June 2018, Waikoloa, HI, USA
A. Herguth, C. Derricks, D. Sperber

Evidence of rear surface related degradation in Cz-Si-type solar cells
(Preprint)

J. Fichtner, A. Zuschlag, G. Hahn

Gettering Efficacy of APCVD-Based Process Steps for Low-Cost PERT-Type Multicrystalline Silicon Solar Cells
(Journal Paper)

8th Silicon PV Conference, 19-21 March 2018, Lausanne, Switzerland
J. Fichtner, A. Zuschlag, G. Hahn

Gettering efficacy of diffusion processes based on doped APCVD glasses
(Journal Paper)

G. Micard, G. Hahn, B.Terheiden

On the optimal doping profile under local metal contacts
(Journal Paper)

J. Steffens, G. Hahn, B. Terheiden

Towards a fast determination of the hydrogen concentration in thin passivating a-Si:H layers using GD-OES
(Journal Paper)

C. Derricks, Axel Herguth, G. Hahn, O. Romer, T. Pernau

Elimination of BO-LID in mass production using illuminated annealing in a coupled firing and regeneration tool
(Journal Paper)

A. Herguth, B. Hallam                                                       

A generalized model for boron-oxygen related light induced degradation in crystalline silicon
(Journal Paper)

A. Herguth, P. Keller, N. Mundhaas                            

Influence of temperature on light induced phenomena in multicrystalline silicon
(Journal Paper)

P. Keller, A. Herguth                                                          

Investigation on the Influence of Illumination on the Diffusion of Hydrogen into Crystalline Silicon
(Journal Paper)

J. Lindroos, A. Zuschlag, J. Carstensen, G. Hahn

 Light-induced degradation variation in industrial multicrystalline PERC silicon solar cells
(Journal Paper)

D. Skorka, A. Zuschlag, G. Hahn                                  

Firing and gettering dependence of effective defect density in material exhibiting LeTID
(Journal Paper)

C. Winter, A. Zuschlag, D. Skorka, G. Hahn            

Influence of dielectric layers and thermal load on LeTID
(Journal Paper)

P. Keller, A. Herguth             

Investigation on the influence of illumination on the diffusion of hydrogen into crystalline silicon
(Journal Paper)

33rd European Photovoltaic Solar Energy Conference, 25-29 September 2017, Amsterdam, The Netherlands
A. Herguth                                                                    

How to properly assess boron-oxygen related degradation in crystalline silicon
(Preprint)

A. Herguth, C. Derricks, G. Hahn                       

Regeneration of boron-oxygen related degradation in Cz-Si PERC-type solar cells at high temperatures
(Preprint)

C. Fischer, J. Fichtner, A. Zuschlag, G. Hahn         

Gettering efficacy of APCVD PSG and BSG layers in mc-Si
(Preprint)

J. Fritz, A. Zuschlag, D. Skorka, A. Schmid, G. Hahn                                               

Impact of temperature and doping on LETID and regeneration in mc-Si
(Preprint)

D. Sperber, A. Herguth, G. Hahn                                  

Investigating possible causes of light induced degradation in boron-doped float-zone silicon
(Preprint)

A. Schmid, A. Zuschlag, D. Skorka, J. Fritz, C. Winter, G. Hahn                          

Influence of different transition metal contaminations on degradation and regeneration in mc-Si
(Preprint)

44th IEEE Photovoltaic Specialists Conference, 25-30 June 2017, Washington D.C., USA
D. Sperber, A. Graf, D. Skorka, A. Herguth, G. Hahn                                             

Degradation of surface passivation on crystalline silicon and its impact on light induced degradation experiments
(Preprint)

7th SiliconPV Conference, 3-5 April 2017, Freiburg, Germany
J.M. Fritz, A. Zuschlag, D. Skorka, A. Schmid, G. Hahn                  

Temperature dependent degradation and regeneration of differently doped mc-Si materials 
(Journal Paper)

A. Herguth                                                                    

On the meaning (fullness) of the intensity unit ‘suns’ in light induced degradation experiments
(Journal Paper)

A. Herguth, C. Derricks, P. Keller, B. Terheiden                                      

Recovery of LeTID by low intensity illumination: Reaction kinetics, completeness and threshold temperature
(Journal Paper)

A. Herguth, S. Wilking                                                      

CASSANDRA – a tool for analysis and prediction of time resolved BO defect dynamic on lifetime and cell level
(Journal Paper) 

G. Micard, D. Sommer, G. Hahn, B. Terheiden      

Extraction of individual components of series resistance using TCAD simulations meeting the requirements of 2- and 3-dimensional carrier flow of IBC solar cells
(Journal Paper)

J. Lindroos, K. Petter, K. Sporleder, M. Turek, P. Pacho, M. Rinio                                       

Light beam induced current of light-induced degradation in high-performance multicrystalline Al-BSF cells
(Journal Paper)                 

D. Sperber, A. Graf, A. Heilemann, A. Herguth, G. Hahn                                                   

Bulk and surface instabilities in boron doped float-zone samples during light induced degradation treatments
(Journal Paper)

J. Steffens, H-W. Becker, S. Gerke, S. Joos, G. Hahn, B. Terheiden                                

Replacing NRA by fast GD-OES measurements as input to a model based prediction of hydrogen diffusion in a-Si
(Journal Paper)

32nd European Photovoltaic Solar Energy Conference, 20-24 June, 2016 Munich, Germany
B. Albrecht, Y.P. Botchak, F. De Moro, P. Keller, G. Hahn                            
Investigations on laser fired contacting and annealing on RST silicon PERC-type solar cells

(Preprint)

F. Book, H. Knauss, C. Demberger, F. Mutter, G. Hahn

Phosphorous doping from APCVD deposited PSG
(Preprint)

J. Engelhardt, S. Fritz, E. Emre, G. Hahn                 

Contact formation on p-doped Si by screen-printing pure Ag pastes for bifacial n-type Si solar cells
(Preprint)

D. Skorka, A. Zuschlag, G. Hahn

Spatially resolved degradation and regeneration kinetics in mc-Si
(Preprint)

D. Sperber, F. Furtwängler, A. Herguth, G. Hahn 

On the stability of dielectric passivation layers under illumination and temperature treatment
(Preprint)

M. Steyer, A. Dastgheib-Shirazi, J. Engelhardt, G. Hahn, B. Terheiden                                   

Influence of rear side coating on emitter formation during POCl3 diffusion process
(Preprint)

S. Wilking, S. Ebert, C. Beckh, A. Herguth, G. Hahn                                                   

Of apples and oranges: why comparing BO regeneration rates requires injection level correction
(Preprint)

A. Zuschlag, D. Skorka, G. Hahn                                 

Degradation and regeneration in mc-Si after different gettering steps
(Journal Paper)

41th IEEE Photovoltaic Specialists Conference, 5-10 June 2016, Portland, USA
A. Zuschlag, D. Skorka, G. Hahn

Degradation und regeneration analysis in mc Si
(Preprint)

6th SiliconPV Conference, 07-10 March 2016, Chambéry, France
A. Dastgheib-Shirazi, J. Rinder, M. Steyer, B. Terheiden, G. Hahn

Enhanced oxidation of thermally grown SiO2 due to P-precipitates
(Journal Paper)

A. Frey, S. Fritz, J. Engelhardt, G. Hahn, B. Terheiden                                        

Influence of contact firing conditions on the characteristics of bi-facial n-type silicon solar cells using Ag/Al pastes
(Journal Paper)

S. Fritz, E. Emre, J. Engelhardt, S. Ebert, N. Nowak, J. Booth, G. Hahn      

Contacting BBr3-based boron emitters with Al-free screen-printing paste
(Journal Paper)

A. Herguth                                                         

Finite element simulation of the Local Al/Si contact formation
(Journal Paper)

R. Horbelt, B. Terheiden

Surface recombination velocity of local Al-contacts of PERC cells determined from LBIC measurements and 2D Simulation
(Journal Paper)

D. Sperber, A. Herguth, G. Hahn            

Instability of dielectric surface passivation quality at elevated temperature and illumination
(Journal Paper)

B. Terheiden

CVD boron containing glasses - an attractive diffusion source for high quality emitters and simplified processing
(Journal Paper) 

31st European Photovoltaic Solar Energy Conference, 14-18 September 2015, Hamburg, Germany
J. Engelhardt, A. Frey, S. Fritz, G. Micard, S. Riegel, G. Hahn, B. Terheiden  

Contact formation on boron doped silicon substrates from passivating PECV-deposited dielectric doping layers with anti-reflective properties by screen-printing Ag pastes for high-efficiency n-type silicon solar cells
(Preprint)

A. Frey, J. Engelhardt, J. Ebser, G. Hahn, B. Terheiden                                        

Surface texturing for silicon solar cell application using ICP-PECVD plasma technique
(Preprint)

A. Gorgulla, K. Hagedorn, G. Hahn, B. Terheiden                                                           

Effects of electrode distance and target angles on elemental concentrations and film properties of Al-doped ZnO films prepared by magnetron co-sputtering
(Preprint)

A. Gorgulla, D. P. Ertel, G. Hahn, B. Terheiden

Influence of deposition parameters on elemental concentrations, electrical, and optical properties of magnetron co-sputtered Al-doped ZnO films
(Preprint)

A. Herguth, S. Wilking, R. Horbelt, S. Ebert, C. Beckh, G. Hahn, T. Niewelt, J. Broisch, M. Schubert, W. Warta, F. Wolny                                                                   

Accelerating boron-oxygen related regeneration: lessons learned from the BORNEO project
(Preprint)

S. Riegel, S. Fritz, K. Dressler, A. Herguth, M. König, M. Hörteis, G. Hahn                 

Microscopic thick film contact formation mechanism to p(p+) Si and influence of the metal contact on the Si substrate – lessons learned from the KONSENS project
(Preprint)

Y. Schiele, N. Brinkmann, G. Hahn, B. Terheiden                                                           

Comparison of bifacial and monofacial large-area n-type Si solar cells from 100 μm thin wire-sawn wafers
(Preprint)

42nd IEEE Photovoltaic Specialists Conference, 14 - 19 June 2015, New Orleans, USA
Y. Schiele, N. Brinkmann, J. Ebser, R. Horbelt, A. Frey, J. Engelhardt, G. Hahn, B. Terheiden

>20% efficient 80 μm thin industrial-type large-area solar cells from 100 μm sawn c-Si wafers
(Preprint)

5th SiliconPV Conference, 23-25 March 2015, Constance, Germany

B. Albrecht, P. Keller, F. De Moro, G. Hahn                                                                             Improvement of VOC for thin RST solar cells by enhanced back side passivation
Link zum Journal Paper

Y.P. Botchak Mouafi, A. Zuschlag, P.-Y. Pichon, A. Schönecker, G. Hahn

Efficiencies above 16% on novel quasi-mono RGS material
Link zum Journal Paper

A. Dastgheib-Shirazi, G. Hahn, G. Micard, A. Peral, M. Steyer, H. Wagner

Dissolution of electrically inactive phosphorus by low temperature annealing
Link zum Journal Paper

J. Engelhardt, G. Hahn, B. Terheiden             

Multifunctional ICP-PERC silicon nitride layers for silicon solar cell applications
Link zum Journal Paper 

S. Fritz, G. Hahn, A. Herguth, S. Riegel         

Influence of Si surface orientation on screen-printed Ag/Al contacts
Link zum Journal Paper

S. Gerke, H. Becker, G. Hahn, R. Job, D. Rogalla, B. Terheiden

Morphology and hydrogen in passivating amorphous silicon layers
Link zum Journal Paper

A. Gorgulla, D. Ertel, G. Hahn, M. Steyer, B. Terheiden     

Effect of Al concentration analyzed by ICP-OES on the structural, electrical and optical properties of co-sputtered ZnO:Al Films
Link zum Journal Paper

A. Herguth, G. Hahn, R. Horbelt, R. Job, S. Wilking

Comparison of BO regeneration dynamics in PERC and Al BSF solar cells
Link zum Journal Paper

M. Steyer, A. Dastgheib-Shirazi, G. Hahn, B. Terheiden

New method for determination of electrically inactive phosphorus in n-type emitters 
Link zum Journal Paper

A. Zuschlag, G. Hahn, D. Kohberger

3D-FIB investigation of Cu precipitates in c-Si after high temperature treatments
Link zum Journal Paper 

E-MRS Spring Meeting, 11-15 May 2015, Lille, France
S. Gerke, G. Hahn, R. Job, B. Terheiden                                                          

Bias-plasma assisted RF magnetron sputter deposition of hydrogen less amorphous silicon
Link zum Journal Paper

S. Gerke, H.W. Becker, D. Rogalla, G. Hahn, R. Job, B. Terheiden                        

About nuclear resonant reaction analysis for hydrogen investigations in amorphous silicon
Link zum Journal Paper

R. Horbelt, G. Hahn, R. Job, B. Terheiden                                                          

Void formation on PERC solar cells and their impact on the electrical cell parameters verified by luminescence and scanning acoustic microscope measurements
Link zum Journal Paper

29th European Photovoltaic Solar Energy Conference, 22-26 September 2014, Amsterdam, The Netherlands
Y. P. Botchak Mouafi, B. Herzog, G. Hahn
Effect of the crucible and its coating on the red zone in multicrystalline silicon – analysis on solar cell level 
(Preprint)
J. Ebser, N. Brinkmann, Y. Schiele, A. Herguth, G. Hahn, B. Terheiden                        
p+ doping analysis of laser fired contacts by Raman spectroscopy(Preprint)
A. Frey, J. Engelhardt, S. Fritz, S. Gloger, G. Hahn, B. Terheiden

n-type bi-facial solar cells with boron emitters from doped PECVD layers
(Preprint)

S. Fritz, S. Riegel, A. Herguth, M. König, M. Hörteis, G. Hahn
A phenomenological model for the contact formation of Ag/Al screen-printing pastes through SiNX:H layers
(Preprint)
S. Gerke, H. Becker, D. Rogalla, G. Hahn, R. Job, B.  Terheiden
Investigation of hydrogen dependent long-time thermal characteristics of PECV-deposited intrinsic amorphous layers of different morphologies  (Preprint)
A. Gorgulla, N. Brinkmann, D. Skorka, G. Hahn, B. Terheiden
Effect of oxygen during thermal annealing on the electrical and optical properties of sputter deposited Al-doped ZnO films for heterojunction solar cell application (Preprint)
A. Herguth, J. Ebser, D. Sommer, S. Ohl, B. Terheiden, G. Hahn
Spatially resolved analysis of selectively doped regions via confocal Raman microscopy (Preprint)
R. Horbelt, A. Herguth, G. Hahn, R. Job, B. Terheiden
Temperature dependence of void formation in PERC cells and their spatially resolved detection by combining scanning acoustic microscopy and electromluminescence measurements  (Preprint)
P. Keller, D. Wood, C. Parfeniuk, G. Beaucarne, G. Cook, P. Mazumder, G. Hahn
First solar cell results on novel direct-cast silicon wafers (Preprint)
G. Micard, G. Hahn                                      
Free energy loss analysis decomposition of the power voltage characteristic of an interdigitated back contact colar cell (Preprint)
Y. Schiele, F. Book, C. Demberger, K. Jiang, G. Hahn                                                             
Co-diffused APCVD boron rear emitter with selectively etched-back FSF for industrial n-type Si solar cells (Preprint)
Y. Schiele, G. Hahn, B. Terheiden
Contacting and recombination analysis of boron emitters via etch-back for advanced n-type Si solar cells (Preprint)
D. Sommer, S. Fritz, A. Herguth, S. Ohl, G. Hahn, B. Terheiden 
Kelvin probe force microscopy (KPFM): investigation of local boron doped emitter regions formed by inkjet boron inks for industrially feasible IBC solar cells (Preprint)
M. Steyer, A. Dastgheib-Shirazi, G. Micard, H. Wagner, P.P. Altermatt, G. Hahn 
Influence of the bubbler temperature on PSG and emitter formation during POCl3 diffusion process (Preprint)
S. Wilking, J. Engelhardt, S. Ebert, C. Beckh, A. Herguth, G. Hahn 
High speed regeneration of BO‐defects: improving long‐term solar cell performance within seconds (Preprint)
S. Lindekugel, B. Terheiden, R. Pavlović, K. Van Nieuwenhuysen, T. Pettersen, E. Astrova, A. Straboni, H. H. Kühnlein, S. Gerke, G. Micard, S. Reber                        
The EU project R2M-Si on roll to module processed crystalline silicon thin-films (Preprint)

4th SiliconPV Conference, March 2014, 's-Hertogenbosch, The Netherlands
J. Engelhardt, A. Frey, L. Mahlstaedt, S. Gloger, G. Hahn, B. Terheiden                         Boron emitters from doped PECVD layers for n-type crystalline silicon solar cells with LCO Link zum Journal Paper
S. Joos, Y. Schiele, B. Terheiden, G. Hahn, H.W. Becker, D. Rogalla    
Fundamental studies of hydrogen at the silicon / silicon nitride interface                                                      Link zum Journal Paper
Y. Schiele, S. Joos, G. Hahn, B. Terheiden                                                   
Etch-back of p+ structures for selective boron emitters in n-type c-Si solar cells Link zum Journal Paper 
E-MRS Spring Meeting, 26-30 May 2014, Lille, France
M. Perani, N. Brinkmann, D. Cavalcoli, B. Terheiden               
Nanocrystalline silicon-oxy-nitride films for photovoltaic applications: electrical, optical and structural properties
M. Perani, E. di Russo, N. Brinkmann, B. Terheiden, D. Cavalcoli                            
Morphology of multiphase and functional thin films by atomic force microscopy
39th IEEE Photovoltaic Specialists Conference, 16-21 June 2013, Tampa, USA
S. Braun, R. Nissler, C. Ebert, D. Habermann, G. Hahn                                                     High efficiency multi-busbar solar cells and modules (Preprint)
A. Dastgheib-Shirazi, G. Micard, H. Wagner, M. Steyer, P. Altermatt, G. Hahn
Towards an optimized emitter for screen printed solar cells (Preprint)
28th European Photovoltaic Solar Energy Conference, 30 September - 4 October 2013, Paris, France
Y. P. Botchak Mouafi, T. Lüder, G. Hahn                                                            
Influence of the SiNx deposition temperature on the passivation quality of Al2O3/SiNx stacks and the effect of blistering (Preprint)
S. Braun, R. Nissler, D. Habermann, G. Hahn                           
Highly efficient multi-busbar solar cells with Ag nano-particle front side metallization (Preprint)
S. Gerke, A. Herguth, N. Brinkmann, G. Hahn, R. Job              
Evaluation of capacitance-voltage spectroscopy by correlation with minority carrier lifetime measurements of PECVD-deposited intrinsic amorphous layers (Preprint)
S. Gindner, B. Herzog, G. Hahn       
Surface passivation study on gettered multicrystalline silicon (Preprint)
A. Gorgulla, N. Brinkmann, A. Bauer, G. Hahn, B. Terheiden           
Influence of the electrodes’ distance upon the electrical, optical and structural properties of PECV-deposited hydrogenated amorphous silicon films for heterojunction solar cell application (Preprint)
A. Herguth, G. Hahn                             
Towards a high throughput solution for boron-oxygen related regeneration (Preprint)
A. Herguth, S. Braun, G. Hahn, C. Poenisch, R. Nissler                             
Towards non-permanent contacting schemes for busbar-free solar cells (Preprint)
S. Joos, S. Wilking, Y. Schiele, A. Herguth, U. Heß, S. Seren, B. Terheiden,                G. Hahn
Hydrogen in stacked dielectric layers (Preprint)
P. Karzel, M. Ackermann, L. Gröner, C. Reimann, M. Zschorsch, S. Meyer,             G. Hahn                                                                                                                                                    Hydrogen passivation and phosphorous gettering at different grain boundary types in multicrystalline silicon (Preprint) 
P. Keller, A. Zuschlag, P. Karzel, F. de Moro, G. Hahn                                   
Defect characterization and investigation of RST-silicon ribbon wafers (Preprint)
G. Micard, G. Hahn                                
Discussion and simulation about the evaluation of the emitter series resistance            (Preprint)
J. H. Ranzmeyer, Y. Schiele, G. Hahn, B. Terheiden                                
Electrical and optical analysis of dielectric layers for advanced passivation of BBr3 diffused p+ emitters in n-type c-Si solar cells (Preprint)
Y. Schiele, S. Fahr, S. Joos, G. Hahn, B. Terheiden                                
Study on boron emitter formation by BBr3 diffusion for n-type Si solar cell applications (Preprint)
D. Skorka, N. Brinkmann, A. Gorgulla, G. Hahn, B. Terheiden                                Changes in passivation quality of PECVD-deposited hydrogenated amorphous silicon layers used in solar cells due to sputter deposition of TCOs (Preprint)
S. Wilking, S. Ebert, A. Herguth, G. Hahn                                                       
Influence of short high temperature steps on the regeneration of boron-oxygen related defects (Preprint)

E-MRS Fall Meeting, 16-20 September, 2013, Warsaw, Poland 
M. Perani, N. Brinkmann, A. Bauer, D. Cavalcoli, B. Terheiden                                         
Microstructural and electrical properties of nanocrystalline silicon-oxy-nitride layers for photovoltaic applications

3rd SiliconPV Conference, 25-27 March 2013, Hamelin, Germany
J. Engelhardt, S. Ohl, G. Hahn, B. Terheiden                                                
Correlation of stress in silicon nitride layers with their complete removal by laser ablation Link zum Journal Paper
S. Fritz, S. Riegel, S. Gloger, D. Kohler, M. König, M. Hörtheis, G. Hahn                                                          
Influence of emitter properties on contact formation to p+ silicon Link zum Journal Paper
A. Dastgheib-Shirazi, M. Steyer, G. Micard, H. Wagner, P. Altermatt, G. Hahn                             
Relationships between diffusion parameters and phosphorus precipitation during the POCl3 diffusion process Link zum Journal Paper
P. Keller, J. Junge, F. De Moro, S. Seren, G. Hahn                                      
PERC solar cells on below 100 µm thick RST silicon ribbon wafers Link zum Journal Paper
S. Wilking, A. Herguth, G. Hahn
Influence of hydrogenated passivation layers on the regeneration of boron-oxygen related defects Link zum Journal Paper
Y. Schiele, S. Wilking, F. Book, T. Wiedenmann, G. Hahn                      
Record efficiency of PhosTop solar cells from n-type Cz UMG silicon wafers Link zum Journal Paper
S. Braun, G. Hahn, R. Nissler, C. Pönisch, D. Habermann                   
Multi-busbar solar cells and modules: high efficiencies and low silver consumption Link zum Journal Paper

27th European Photovoltaic Solar Energy Conference, 24-28 September 2012, Frankfurt, Germany
M. Steyer, A. Dastgheib-Shirazi, H. Wagner, G. Micard, P.P. Altermatt, G. Hahn
A study of various methods for the analysis of the phosphosilicate glass layer               (Preprint)
D. Kohler, A. Zuschlag, S. Seren, G. Hahn                                                     
On the formation of defect clusters in mc silicon solar cells (Preprint)
E. Emre, S. Braun, G. Hahn             
The corrosive effects of alkaline nickel-phosphorus plating on crystalline silicon            (Preprint)
D. Sommer, N. Brinkmann, G. Micard, G. Hahn, B. Terheiden       
Electrical, optical and structural investigation of low-temperature PECV-deposited hydrogenated amorphous silicon-oxynitride films for surface passivation of crystalline silicon solar cells (Preprint)
B. Terheiden et al.                               
The European project 20Plµs: 20 percent efficiency on less than 100 µm thick industrially feasible crystalline-Si solar cells (Preprint)
P. Keller, U. Hess, S. Seren, J. Junge, F. de Moro, G. Hahn             
Over 14% efficiency on RST-ribbon solar cells (Preprint)
S. Seren, S. Braun, Y. Schiele, G. Hahn, B. Terheiden                             
Nickel plating on p+ silicon – a characterization of contact resistivity and line resistance (Preprint)
G. Micard, A. Dastgheib-Shirazi, M. Steyer, H. Wagner, P. Altermatt, G. Hahn
Advances in the understanding of phosphorus silicte glass (PSG) formation for accurate process simulation of phosphorus diffusion (Preprint)

38th IEEE Photovoltaic Specialists Conference, 4-8 June, 2012 Austin, USA
T. Lauermann, B. Fröhlich, G. Hahn, B. Terheiden
Design considerations for industrial rear passivated solar cells (Preprint)
A. Dastgheib-Shirazi, M. Steyer, G. Micard, H. Wagner, P. Altermatt, and G. Hahn
Effects of process conditions for the n+ emitter formation in crystalline silicon          (Preprint)
2nd SiliconPV Conference,  3-5 April 2012, Leuven, Belgium
D. Kiliani, A. Herguth, G. Micard, J. Ebser, G. Hahn
Time-resolved photoluminescence imaging with electronic shuttering using an image intensifier unit Link zum Journal Paper
S. Joos, A. Herguth, U. Hess, J. Ebser, S. Seren, B. Terheiden, G. Hahn
Light induced curing (LIC) of passivation layers deposited on native silicon oxide         Link zum Journal Paper
Y. Schiele, F. Book, S. Seren, G. Hahn, B. Terheiden
Screen-printed Al-alloyed rear junction solar cell concept applied to very thin (100 µm) large area n-type Si wafers Link zum Journal Paper
S. Braun, G. Micard, G. Hahn
Solar cell improvement by using a multi busbar design as front electrode                       Link zum Journal Paper
T. Lüder, T. Lauermann, A. Zuschlag, G. Hahn, B. Terheiden
Al2O3/SiNx-stacks at increased temperatures: avoiding blistering during contact firing Link zum Journal Paper

26th European Photovoltaic Solar Energy Conference, 4-9 September 2011, Hamburg, Germany
F. Book, T. Wiedenmann, S. Gloger, B. Raabe, G. Schubert, H. Plagwitz, G. Hahn
Analysis of processing steps for industrial large area n-type solar cells with screen printed aluminum-alloyed rear emitter and selective FSF (Preprint)
S. Gindner, A. Dastgheib-Shirazi, J. Junge, S. Seren, G. Hahn
Influence of diffusion parameters on electronic quality of multicrystalline silicon                 (Preprint)
A. Herguth, B. Raabe, S. Scholz, G. Hahn, H. Haverkamp, R. Nissler, D. Habermann, C. Buchner, C. Schmid Influence of spectral mismatch, cell reflection properties and IQE on the efficiency measurement (Preprint)
U. Hess, S. Joos, S. Seren, G. Hahn, T. Weber, P.-Y. Pichon, A. SchöneckerFirst ribbon growth on substrate (RGS) solar cells with selective emitter (Preprint)
P. Karzel, A. Frey, S. Fritz, G. HahnInfluence of hydrogen on interstitial iron concentration in multicrystalline silicon (Preprint)
D. Kiliani, G. Micard, A. Herguth, G. HahnProgress in mechanically shuttered time-resolved photoluminescence imaging of silicon wafers (Preprint)
D. Kohler, D. Kiliani, B. Raabe, S. Seren, G. HahnCharacterization of defect clusters in compensated silicon solar cells (Preprint)
T. Lauermann, A. Zuschlag, S. Scholz, G. Hahn, B. TerheidenThe influence of contact geometry and sub-contact passivation on the performance of screen-printed Al2O3 passivated solar cells (Preprint)
G. Micard, A. Dastgheib-Shirazi, B. Raabe, G. Hahn                                                     
Diffusivity analysis of POCl3 emitter SIMS profiles for semi empirical parametrization in Sentaurus process (Preprint)
Y. Schiele, G. Hahn, B. Terheiden                
Investigation of radiation damage to the Al2O3 / Si wafer interface during electron beam evaporation by means of C-V and lifetime measurements (Preprint)
N. Ximello, J. Junge, S. Seren, G. Hahn, E. Epple                                                                    
Up to 20% efficient solar cells on monocrystalline silicon wafers by using a KOH – high boiling alcohol (HBA) texturing solution (Preprint)
A. Zuschlag, G. Hahn                                                                                                                         Detection limit of XRF measurements at different synchrotron radiation facilities       (Preprint)

1st SiliconPV Conference, April 2011, Freiburg, Germany

F. Book, T. Wiedenmann, G. Schubert, H. Plagwitz, G. Hahn

Influence of the front surface passivation quality on large area n-type silicon solar cells with Al-alloyed rear emitter

Link zum Journal Paper

S. Braun, A. Zuschlag, B. Raabe, G. Hahn

The origin of background plating

Link zum Journal Paper

 J. Junge, A. Herguth, G. Hahn, D. Kreßner-Kiel, R. Zierer

Investigation of degradation in solar cells from different mc-Si materials

Link zum Journal Paper

T. Lüder, G. Hahn, B. Terheiden

Passivation of Si wafers by Al2O3 films with different surface conditioning

Link zum Journal Paper

S. Gloger, N. Brinkmann, B. Terheiden

Low surface recombination velocity using amorphous silicon on industrial-type cleaned surfaces

Link zum Journal Paper

S. Riegel, F. Mutter, G. Hahn, B. Terheiden

Influence of the dopant on the contact formation to p+-type silicon

Link zum Journal Paper

25th European Photovoltaic Solar Energy Conference & 5th World Conference on Photovoltaic Solar Energy Conversion, 6-10 September 2010, Valencia, Spain

G. Micard, S. Seren, G. Hahn

Quantitative interpretation of light beam induced current contrast profiles: back side surface influence (Preprint)

J. Ebser, J. Junge, T. Lüder, S. Seren, B. Terheiden, G. Hahn

Al2O3 rear surface passivation for silicon ribbon solar cells (Preprint)

B. Raabe, F. Book, A. Dastgheib-Shirazi, G. Hahn

The development of etch-back processes for industrial silicon solar cells (Preprint)

N. Ximello, A. Dastgeheib-Shirazi, S. Scholz, G. Hahn

Influence of pyramid size of chemically textured silicon wafers on the characteristics of industrial solar cells (Preprint)

S. Graf, J. Junge, S. Seren, G. Hahn

Emitter optimization for mono- and multicrystalline silicon: a study of emitter saturation currents (Preprint)

S. Joos, U. Heß, S. Seren, B. Terheiden, G. Hahn

Stacked PECVD backside dielectrics: an option for a firing stable passivation of industrial type screen-printed silicon solar cells (Preprint)

S. Braun, E. Emre, B. Raabe, G. Hahn

Electroless nickel and copper metallization: contact formation on crystalline silicon and background plating behavior on PECVD SiNx:H layers (Preprint)

T. Lauermann, A. Herguth, S. Scholz, G. Hahn, N. P. Ostrom, B. K. Johnson, W. Jung, H. Haverkamp, C. Schmid

Large area solar cells made from degradation-free, low resistivity gallium doped Cz wafers (Preprint)

S. Gindner, J. Junge, S. Seren, G. Hahn

Texturing of string ribbon silicon (Preprint)

T. Lüder, B. Raabe, B. Terheiden

Annealing behavior of Al2O3 thin films grown on crystalline silicon by atomic layer deposition (Preprint)

U. Hess, S. Joos, J. Junge, S. Seren, G. Hahn, T. Weber, P.-Y. Pichon, A. Schönecker

Dielectric rear side passivation on ribbon growth on substrate (RGS) solar cells (Preprint)

S. Riegel, F. Mutter, G. Hahn, B. Terheiden

Contact formation in the silver/aluminium thick film firing process - a phenomenological approach (Preprint)

G. Hahn

Status of selective emitter technology (Preprint)

A. Zuschlag, H Morhenn, J. Bernhard, J. Junge, S. Seren, G. Hahn

Microscopic analysis of the influence of solar cell process steps on the recombination activity of extended crystal defects (Preprint)

F. Book, T. Wiedenmann, A. Dastgheib-Shirazi, B. Raabe, G. Hahn

Large area n-type silicon solar cells with selective front surface field and screen printed aluminum-alloyed rear emitter (Preprint)

D. Kiliani, G. Micard, B. Raabe, G. Hahn

Time resolved photoluminescence imaging for carrier lifetime mapping of silicon wafers (Preprint)

J. Junge, J. Ebser, S. Graf, B. Terheiden, S. Seren, G. Hahn, M. Käs

Evaluating the efficiency limits of low cost mc Si materials using advanced solar cell processes (Preprint)

D. Kohler, D. Kiliani, B. Raabe, S. Seren, G. Hahn

Comparison of UMG materials: are ingot height independent solar cell efficiencies possible? (Prepint)

A. Dastgheib-Shirazi, M. Steyer, J. Junge, S. Gindner, G. Hahn

A study of the surface morphology of silicon: effect of parasitic emitter etching on the rear-side performance of silicon solar cells (Preprint)

35th IEEE Photovoltaic Specialists Conference, 21-25 June 2010, Hawaii, USA

F. Book, S. Braun, A. Herguth, A. Dastgheib-Shirazi, B. Raabe, G. Hahn

The etchback selective emitter technology and its application to multicrystalline silicon (Preprint)

T. Lauermann, T. Lüder, S. Scholz, B. Raabe, G. Hahn, B. Terheiden

Enabling dieletric rear side passivation for industrial mass production by developing lean printing-based solar cell processes (Preprint)

A. Zuschlag, S. Ohl, J. Bernhard, H. Morhenn, J. Ebser, J. Junge, S. Seren, G. Hahn

µXRF investigations on the influence of solar cell processing steps on iron and copper precipitates in multicrystalline silicon (Preprint) 

24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany

A. Dastgheib-Shirazi, F. Book, H. Haverkamp, B. Raabe, G. Hahn

Investigations of high refractive silicon nitride layers for etched back emitters: enhanced surface passivation for selective emitter concept (SECT) (Preprint)

A. Herguth, G. Hahn

Boron-oxygen related defects in Cz-silicon solar cells degradation, regeneration and beyond (Preprint)

A. Herguth, G. Hahn

Temperature induced degradation of the contact resistance of Ag-screen printed p-type silicon solar cells (Preprint)

G. Micard, S. Seren, G. Hahn

Quantitative interpretation of light beam induced current contrast profiles: evaluating the influence of a near grain boundary (Preprint)

B. Herzog, G. Hahn, C. Knopf, K. Wambach

Studies of compensation behaviour in p-type mc-silicon (Preprint)

S. Gloger, S. Riegel, B. Raabe, G. Hahn

Investigation of the back side passivation layer of screen printed bifacial silicon solar cells (Preprint)

S. Riegel, B. Raabe, M. P. Stewart, H. Mungekar, P. Borden, B. Terheiden, G. Hahn

Thermal stability of PECVD a-Si1-xCx layers for crystalline silicon solar cell passivation (Preprint)

S. Riegel, S. Golger, B. Raabe, G. Hahn

Comparison of the passivation quality of boron and aluminum BSF for wafers of varying thickness (Preprint)

D. Kohler, B. Raabe, S. Braun, S. Seren, G.Hahn

Upgraded metallurgical grade silicon solar cells: a detailed material analysis (Preprint)

T. Lauermann, A. Dastgheib-Shirazi, F. Book, B. Raabe, G. Hahn, H. Haverkamp, D. Habermann, C. Demberger, C. Schmid

InSECT: an inline selective emitter concept with high efficiencies at competitive process costs improved with inkjet masking technology (Preprint)

T. Lauermann, F. Book, A. Dastgheib-Shirazi, G. Hahn, H. Haverkamp, R. Bleidiessel, M. Fleuster

The optimal choice of the doping levels in an inline selective emitter design for screen printed multicrystalline silicon solar cells (Preprint)

N. Ximello, H. Haverkamp, G. Hahn

A new KOH-etch solution to produce a random pyramid texture on monocrystalline silicon at elevated process temperatures and shortened process times (Preprint)

S. Braun, B. Raabe, D. Kohler, S. Seren, G. Hahn

Comparison of buried contact and screen printed 100% UMG solar cells resulting in 16.2% efficiency (Preprint)

J. Junge, A. Herguth, S. Seren, G. Hahn

Reducing the impact of metal impurities in block-cast mc silicon (Preprint)

P. Karzel, J. Junge, G. Hahn

Mapping of hydrogen bond energies in EFG silicon samples by analysis of spatially resolved minority charge carrier lifetimes after annealing steps (Preprint)

D. Kiliani, A. Herguth, G.Hahn, V. Rutka, M. Junk

Fitting of lateral resistances in silicon solar cells to electroluminescence images (Preprint)

U. Hess, S. Joos, S. Seren, G. Hahn, P.-Y. Pichon, A. Schönecker, T. Weber

Infrared microscopy investigation of the crystal structure of ribbon growth on substrate (RGS) solar cells (Preprint)

A. Zuschlag, J. Junge, S. Seren, G. Hahn

Evaluation of processing steps regarding lifetime of iron/copper contaminated mc Si wafers (Preprint)

R. Pavlovic, A. Dastgheib-Shirazi, F. Book, B. Raabe, G. Hahn

Large area solar cells with screen printed front side metallization and dielectric rear side passivation (Preprint)

 

F. Book , A. Dastgheib-Shirazi, B. Raabe, H. Haverkamp, G. Hahn, P. Grabitz

Detailed analysis of high sheet resistance emitters for selectively doped silicon solar cells (Preprint)

 

23rd European Photovoltaic Solar Energy Conference, 1-5 September 2008, Valencia, Spain

G. Micard, S. Seren, G. Hahn

Quantitative interpretation of light beam induced current contrast profiles for differing diffusion lenghts on either side of a grain boundary (Preprint)

S. Scholz, S. Voser, G. Dovids, H. Haverkamp, G. Hahn

Development of an in-line capable sputtering process of silicon nitride for crystalline silicon solar cells (Preprint)

D. Grötschel, J. Junge, M. Käs, A. Zuschlag, G. Hahn

Plasma texturing and its influence on surface passivation (Preprint)

S. Seren, M. Käs, G. Hahn, H. Nagel

Shunt detection with illuminated lock-in thermography on inline relevant time scales (Preprint)

H. Haverkamp, S. Scholz, G. Hahn

Screen printed EWT cells: limitations and alternative approaches to the manufacturing process (Preprint)

G. Micard, G. Hahn, A. Le Donne, S. Binetti, M. Acciarri, S. Pizzini, D. Chrastina, G. Isella

Development of nanocrystalline silicon solar cells grown by LEPECVD: optimization of the intrinsic layer for pin structures (Preprint)

U. Hess, T. Lauermann, S. Seren, G. Hahn, A. Gutjahr, A. Schönecker

Impact of the crystal structure on solar cell parameters of ribbon growth on substrate (RGS) solar cells (Preprint)

G. Hahn, A. Herguth, A. Helfricht, M. Hofmann, W. Warta, N.J.C.M. van der Borg, A.W. Weeber, J. John, G. Beaucarne, S. Bagus, H. Nagel, N. Le Quang, O. Nichiporuk, I. Vincueria, M. Brochs

IV measurement of mc-Si solar cells: comparison of results from institute and industry partners within the EU crystalclear project (Preprint)

S. Riegel, B. Raabe, R. Petres, S. Dixit, L. Zhou, G. Hahn

Towards higher efficiencies for crystalline silicon solar cells using SiC layers (Preprint)

B. Herzog, G. Hahn, M. Hofmann, I. G. Romijn, A. W. Weeber

Bulk hydrogenation in mc-Si by PECVD SiNx deposition using direct and remote plasma (Preprint)

J. Junge, C. Strümpel, S. Seren, G. Hahn, A. Metz, M. Käs

Laser fired contacts for high efficiency solar cells based on EFG materials (Preprint)

S. Ohl, G. Hahn

Increased internal quantum efficiency of encapsulated solar cells using two-component silicone as encapsulant material (Preprint)

A. Zuschlag, G. Micard, J. Junge, M. Käs, S. Seren, G. Hahn, G. Coletti, G. Jia, W. Seifert

Extraction of the surface recombination velocity and diffusion length from LBIC and EBIC measurement at grain boundaries in mc silicon (Preprint)

F. Book, B. Raabe, G. Hahn

Two diffusion step selective emitter: comparison of mask opening by laser or etching paste (Preprint)

A. Dastgheib-Shirazi, H. Haverkamp, B. Raabe, F. Book, G. Hahn

Selective emitter for industrial solar cell production: a wet chemical approach using a single side diffusion process (Preprint)

C. Strümpel, M. McCann, G. Hahn

Influence of hygroscopy on the optical properties of the up-converter BaCl2:Er3+ (Preprint)  

B. Raabe, K. Peter, E. Enabakk, G. Hahn

Minority carrier lifetime monitoring in a buried contact solar cell process using mc-Si  (Preprint)

33rd IEEE Photovoltaic Specialists Conference, 11-16 May 2008, San Diego, USA

A. Zuschlag, G. Micard, J. Junge, M. Käs, S. Seren, G. Hahn, G. Coletti, G. Jia, W. Seifert

Investigations on the recombination activity of grain boundaries in mc silicon (Preprint)

S. Seren, G. Hahn, C. Demberger, H. Nagel

Fast illuminated lock-in thermography: an inline shunt detection measurement tool (Preprint)

J. Junge, M. Kaes, D. Groetschel, A. Zuschlag, S. Seren, G. Hahn, A. Metz, B. T. Chan, J. John, G. Beaucarne

Advanced processing steps for high efficiency solar cells based on EFG material (Preprint)

Helge Haverkamp, Amir Dastgheib-Shirazi, Bernd Raabe, Felix Book, Giso Hahn

Minimizing the electrical losses on the front side: development of a selective emitter process from a single diffusion  (Preprint)

22nd European Photovoltaic Solar Energy Conference, 3-7 September 2007, Milan, Italy

A. Herguth, G. Schubert, M. Kaes, G. Hahn

Further investigations on the avoidance of boron-oxygen related degradation by means of regeneration (Preprint)

M. Kaes, G. Hahn, A. Metz, G. Agostinelli, Y. Ma, J. Junge, A. Zuschlag, D. Groetschel

Progress in high efficiency processing of EFG silicon solar cells (Preprint)

S. Ohl, G. Schubert, J. Horzel, G. Hahn

Investigations on the influence of a forming gas anneal on the mechanical properties of the printed Ag thick film front side contact of solar cells after cofiring (Preprint)

T. Buck, A. Helfricht, R. Kopecek, K. Peter, G. Hahn, W. Appel

Crystalline Si thin film n-type solar cells: a screen printed rear junction approach (Preprint)

B. Raabe, H. Haverkamp, F. Book, A. Dastgheib-Shirazi, R. Moll, G. Hahn

Monocrystalline silicon – future cell concepts (Preprint)

S. Seren, M. Kaes, G. Hahn, A. Gutjahr, A. R. Burgers, A. Schönecker

Efficiency potential of RGS silicon from current R&D production (Preprint)

B. Herzog, B. Raabe, G. Hahn

Bulk hydrogenation in mc-Si by PECVD SiNx deposition only (Preprint)

G. Micard, K. Peter, D. Chrastina, G. Isella

Conductivity measurement of nanocrystalline silicon thin films grown by LEPECVD for photovoltaic applications (Preprint)

21st European Photovoltaic Solar Energy Conference, 4-8 September  2006, Dresden, Germany

J. Arumughan, B. Raabe, R. Kopecek, T. Pernau, K. Peter

Application of BTBAS based silicon nitride in buried contact-screen printed PERTtype bifacial solar cells (Preprint)

H. Haverkamp, M. J. McCann

Screen printed interdigitated back contact solar cells with laser fired contacts (Preprint)

A. Herguth, G. Schubert, M. Kaes, G. Hahn

Avoiding boron-oxygen related degradation in highly boron doped Cz silicon (Preprint)

B. Herzog, K. Peter

Ultra-large 20 x 20 cm2 mc-Si solar cells: improved cell process resulting in efficiencies exceeding 15 % (Preprint)

M. Kaes, G. Hahn, A. Metz

Progress in hydrogenation of multicrystalline silicon solar cells (Preprint)

H. Knauss, H. Haverkamp, W. Jooss, S. Steckemetz, H. Nussbaumer

Industrially applicable metallisation wrap through solar cell process resulting in efficiencies exceeding 16% (Preprint)

R. Kopecek, T. Buck, A. Kränzl, J. Libal, K. Peter, A. Schneider, P. Sánchez-Friera, I. Röver, K. Wambach, E. Wefringhaus, P. Fath

Module interconnection with alternate p- and n-type Si solar cells (Preprint)

A. Kränzl, M. Käs, K. Peter, E. Enebakk

Future cell concepts for mc solar grade silicon feedstock material (Preprint)

B. Raabe, J. Arumughan, B. Clark-Phelps, G. Hahn

Lifetime monitoring and hydrogen passivation in a buried contact cell process using string ribbon silicon (Preprint)

S. Seren, G. Hahn, A. Gutjahr, A. R. Burgers, A. Schönecker

Ribbon growth on substrate - a roadmap to higher efficiencies (Preprint)

G. Schubert, J. Horzel, S. Ohl

Investigations on the mechanism behind the beneficial effect of a forming gas anneal on solar cells with silver thick film contacts  (Preprint)

4th World Conference on Photovoltaic Energy Conversion, 7-12 May 2006, Waikoloa, USA

J. Arumughan, R. Kopecek, T. Pernau, T. Buck, P. Fath, K. Peter

Realization of thin mc-silicon PERT-type bifacial solar cells in industrial environments (Preprint)

T. Buck, R. Kopecek, J. Libal , R. Petres , K. Peter, I. Röver, K. Wambach, L.J. Geerligs, E. Wefringhaus, P. Fath

Large area screen printed n-type mc-Si solar cells with B-emitter: efficiencies close to 15% and innovative module interconnection (Preprint)

G. Hahn, S. Seren, M. Kaes, A. Schönecker, J.P. Kalejs, C. Dubé, A. Grenko, C. Belouet

Review on ribbon silicon techniques for cost reduction in PV (Preprint)

A. Herguth, G. Schubert, M. Kaes, G. Hahn

A new approach to prevent the negative impact of the metastable defect in boron doped Cz silicon solar cells (Preprint)

M. Kaes, G. Hahn, K. Peter, E. Enebakk

Over 18% efficient mc-Si solar cells from 100% solar grade silicon feedstock from a metallurgical process route (Preprint)

R. Kopecek, T. Buck, J. Libal, I. Röver, K. Wambach, L.J. Geerligs, P. Sánchez-Friera, J. Alonso, E. Wefringhaus, P. Fath

Large area screen printed n-type silicon solar cells with rear aluminium emitter: efficiencies exceeding 16% (Preprint)

A. Kränzl, R. Kopecek, K. Peter, P. Fath

Bifacial solar cells on multi-crystalline silicon with boron BSF and open rear contact (Preprint)

M. McCann, B. Raabe, W. Jooss, R. Kopecek, P. Fath

18.1% efficiency for a large area, multi-crystalline silicon solar cell (Preprint)

R. Petres, J. Libal, T. Buck, R. Kopecek, M. Vetter, R. Ferre, I. Martín, D. Borchert, P. Fath

Improvements in the passivation of p+-Si surfaces by PECVD silicon carbide films (Preprint)

S. Seren, G. Hahn, A. Gutjahr, A. R. Burgers, A. Schönecker, A. Grenko, R. Jonczyk

Ribbon growth on substrate and molded wafer - two low cost silicon ribbon materials for PV (Preprint)

C. Strümpel, M. J. McCann, G. Beaucarne, A. Slaoui, C. del Cañizo, I. Tobias

Enhancing silicon solar cell efficiency by modifying the solar spectrum  (Preprint)

15th International Photovoltaic Science & Engineering Conference, 10-15 October 2005, Shanghai, China

T. Buck, R. Kopecek, J. Libal , I. Röver, K. Wambach, L.J. Geerligs, P. Sánchez-Friera, J. Alonso, P. Fath

14.4 % screen printed n-type mc-Si solar cells with Al back junction on thin large area wafers (Preprint)

B. Herzog, E. Rüland, P. Fath

Ultra-large 20 × 20 cm2 multi-crystalline solar cells with spray-on emitter (Preprint)

A. Kränzl, R. Kopecek, B. Terheiden, P. Fath

Bifacial solar cells on multi-crystalline silicon  (Preprint)

R. Kopecek, T. Buck, J. Libal, R. Petres, I. Röver, K. Wambach, R. Kinderman, L. J. Geerligs, P. Fath

Large area n-type multicrystalline silicon solar cells with B-emitter: efficiencies exceeding 14% (Preprint)

J. Libal, R. Petres, R. Kopecek, G. Hahn, M. Vetter, I. Roever, K. Wambach, P. Fath

n-type multicrystalline silicon solar cells: PERC design for high efficiency (Preprint)

R. Petres, J. Libal, R. Kopecek, M. Vetter, R. Ferre, I. Martín, D. Borchert, I. Röver, K. Wambach, P. Fath

Passivation of p+-surfaces by PECVD silicon carbide films - a promising method for industrial silicon solar cell applications (Preprint)

20th European Solar Energy Conference and Exhibition, 6-10 June 2005, Barcelona, Spain

J. Arumughan, T. Pernau, A. Schneider, R. Kopecek, P. Fath

Processing and characterisation of isotropically, alkaline and mechanically textured mc-Si buried contact solar cells: a comparative study (Preprint)

G. Hahn, I. Melnyk, C. Dubé, A.M. Gabor

Development of a chemical surface texture for string ribbon silicon solar cell (Preprint)

G. Hahn, A. Schönecker, A.R. Burger, R. Ginige, K. Cherkaoui, D. Karg

Hydrogen kinetics in crystalline silicon – PECVD SiN studies in mc and Cz silicon (Preprint)

H. Haverkamp, M. McCann, F. Huster, P. Fath

Screen printed low-cost IBC solar cells – preparatory investigations (Preprint)

F. Huster, G. Schubert

ECV doping profile measurements of aluminium alloyed back surface fields (Preprint)

M. Kaes, G. Hahn, Th. Pernau, A. Metz

Towards stable 18% EFG high efficiency solar cells – improved cell process using bulk hydrogenation via PECVD SiN (Preprint)

H. Knauss, P. Fath, W. Jooss, M. McCann, E. Rüland, S. Steckemetz

Large area metallisation wrap through solar cells with thickfilm metallisation (Preprint)

A. Kränzl, R. Kopecek, K. Peter, A. Schneider, P. Fath

Industrial eta=15.5% mc-Si solar cells with boron BSF and open rear contact (Preprint)

J. Libal, R. Petres, T. Buck, R. Kopecek, G. Hahn, R. Ferre, M. Vetter, I. Martín, K. Wambach, I. Roever, P. Fath

n-type multicrystalline silicon solar cells: BBr3-diffusion and passivation of p+-diffused silicon surfaces (Preprint)

I. Melnyk, E. Wefringhaus, F. Delahaye, G. Vilsmeier, W. Mahler, P. Fath

High throughput in-line acidic texturisation and edge isolation: an industrial reality (Preprint)

M. Mueller, D. Kunz, K. Peter, S. Bastide, R. Tena-Zaera, C. Lévy-Clément, T. H. Bergstrom, E. Enebakk

Large area silicon LPE on highly doped silicon substrates and results of related thin film solar cells (Preprint)

M. McCann, C. Strümpel, H. Knauss, T. Pernau, E. Lemp, P. Fath

Angled buried contacts: a front contacting scheme for high efficiency cells with low shading losses (Preprint)

K. Peter, E. Enebakk, K. Friestad, R. Tronstad, C. Dethloff

Investigation of multicrystalline silicon solar cells from solar grade silicon feedstock  (Preprint)

T. Pernau, H. Knauss, H. Haverkamp, A. Kränzl, P. Fath

Summary of the BMWi – UKN project on innovative and cost-effective crystalline silicon solar cells with new applications (Preprint)

B. Raabe, F. Huster, M. McCann, P. Fath

High aspect ratio screen printed fingers (Preprint)

E. Rueland, A. Herguth, A. Trummer, S. Wansleben, P. Fath

Optical µ-crack detection in combination with stability testing for in-line-inspection of wafers and cells (Preprint)

G. Schubert, J. Horzel, R. Kopecek, F. Huster, P. Fath

Silver thick film contact formation on lowly doped phosphorous emitters (Preprint)

S. Seren, G. Hahn, F. Huster, R. Kopecek, A. Gutjahr, A. R. Burgers, A. Schönecker

Screen-printed ribbon growth on substrate solar cells exceeding 12% efficiency (Preprint)

C. Strümpel, M. McCann, C. del Cañizo, I. Tobias, P. Fath

Erbium-doped up-converters on silicon solar cells: assessment of the potential (Preprint)

F. Huster

Aluminium-back surface field: bow investigation and elimination (Preprint)

F. Huster

Investigation of the alloying process of screen printed aluminium pastes for the BSF formation on silicon solar cells (Preprint)

31st IEEE Photovoltaic Specialists Conference, 3-7 January 2005, Lake Buena Vista, USA

G. Hahn, D. Karg, A. Schönecker, A.R. Burgers, R. Ginige, K. Cherkaoui

Kinetics of hydrogenation and interaction with oxygen in crystalline silicon (Preprint)

H. Knauss, M. McCann, P. Fath

Large area metallization wrap through solar cells using electroless plating (Preprint)

R. Kopecek, J. Libal, T. Buck, K. Peter, K. Wambach, M. Acciarri, S. Binetti, L. J. Geerligs, P. Fath

n-type multicrystalline silicon: material for solar cell processes with high efficiency potential (Preprint)

J. Libal, R. Petres, R. Kopecek, G. Hahn, K. Wambach, P. Fath

n-type multicrystalline silicon solar cells with BBr3-diffused front junction (Preprint)

K. Peter, R. Kopecek, T. Pernau, E. Enebakk, K. Friestad, R. Tronstad, C. Dethloff

Analysis of multicrystalline solar cells from solar grade silicon feedstock (Preprint)

A. Schneider, R. Kopecek, G. Hahn, S. Noël, P. Fath

Comparison of gettering effects during phosphorus diffusion for one- and double-sided emitters (Preprint)

S. Seren, G. Hahn, A. Gutjahr, A. R. Burgers, A. Schönecker

Screen-printed ribbon growth on substrate solar cells approaching 12% efficiency (Preprint)

19th European Solar Energy Conference and Exhibition, 7-11 June 2004, Paris, France

J. Arumughan, T. Pernau

Buried contact solar cell process monitoring using lock-in thermography (Preprint)

T. Buck, J. Libal, S. Eisert, R. Kopecek, K. Peter, P. Fath, K. Wambach

Low cost p+nn+-type back junction solar cells by screen printing technique on Cz and mc-si material (Preprint)

G. Hahn, D. Sontag, S. Seren, A. Schönecker, A.R. Burgers, R. Ginige, K. Cherkaoui, D. Karg, H. Charifi

Hydrogenation of multicrystalline silicon – the story continues (Preprint)

G. Hahn, P. Geiger, G. Schubert

Influence of BSF thickness and Al-gettering steps on IQE and cell parameters in mc Si solar cells (Preprint)

A. Hauser, A. Herguth, P. Fath

Thick-film buried contact solar cells as a future trend for industrial crystalline silicon solar cells (Preprint)

A. Hauser, I. Melnyk, E. Wefringhaus, F. Delahaye, G. Vilsmeier, P. Fath

Acidic texturisation of mc-Si using a high throughput in-line prototype system with no organic chemistry (Preprint)

H. Haverkamp, H. Knauss, E. Rueland, P. Fath

Advancements in the development of back contact cell manufacturing processes (Preprint)

F. Huster, S. Seren, G. Schubert, M. Kaes, G. Hahn, O. Breitenstein

Shunts in silicon solar cells below screen printed silver contacts (Preprint)

M. Kaes, S. Seren, T. Pernau, G. Hahn

Limolit – a novel thermographic characterisation method for p/n structures and solar cells (Preprint)

A. Kränzl, R. Kopecek, K. Peter, E. Rüland and P. Fath

Low cost mc silicon solar cells with spray-/roll-on emitter (Preprint)

J. Libal, T. Buck, R. Kopece, P. Fath, K. Wambak, M. Acciarri, S. Binetti, L. J. Geerligs

Properties of n-type multicrystalline silicon: lifetime, gettering and H-passivation (Preprint)

M. McCann, I. Melnyk, E. Wefringhaus, A. Hauser, P. Fath, S. Roberts, T. Bruton, D. Jordan

High efficiency buried contact solar cells on multi-crystalline silicon: an industrial reality (Preprint)

I. Melnyk, E. Wefringhaus, M. McCann, A. Helfricht, A. Hauser, P. Fath

Na2CO3 as an alternative to NaOH/IPA for texturisation of monocrystalline silicon (Preprint)

M. Mueller, C. Zahedi, E. Enebakk, D. Kunz, R. Kopecek K. Peter, C. Lévy-Clément, S. Bastide, M. Mamor, T. H. Bergstrom

Large area cristalline silicon LPE thin film solar cells (Preprint)

E. Rueland, S. Recht, S. Wansleben, H. Feist, P. Fath

µ-crack detection and other optical characterisation techniques for in-line inspection of wafers and cells (Preprint)

E. Rueland, B. Herzog, A. Schneider, A. Kränzl, T. Pernau, I. Melnyk, E. Wefringhaus, P. Fath

Ultra-large 20x20cm2 multi-crystalline solar cells first experiments and limits for industrial solar cell production (Preprint)

A. Schneider, E. Rueland, A. Kraenzl, P. Fath

Mechanical and electrical characterisation of thin multi-crystalline silicon solar cells (Preprint)

D. Sontag, G. Hahn, A. Schneider

Stability test on Cz and tri-silicon wafers with different surface morphologies (Preprint)

G. Schubert, F. Huster, P. Fath

Current transport mechanism in printed Ag thick film contacts to an n-type emitter of a crystalline silicon solar cell (Preprint)

B. Terheiden, N. Gawehns, M. McCann, C. Strümpel, P. Fath

EASY & SIMPLE silicon solar cell concept for concentrated sunlight (Preprint)

A. W. Weeber, H. Tathgar, F. Huster, L. J. Geerligs, B. Terheiden, M. McCann, P. Fath

High-quality mc-Si wafers for high efficiency solar cells (Preprint)

3rd World Conference on Photovoltaic Energy Conversion, 11-18 May  2003, Osaka, Japan

B. Terheiden, P. Fath

Highly efficient double side mechanically textured novel silicon solar cell concepts (Preprint)

T. Buonassisi, O. F. Vyvenko, A. A. Istratov, E. R.Weber, G. Hahn, D. Sontag, J.-P. Rakotoniaina, O. Breitenstein, J. Isenberg, R. Schindler

Assessing the role of transition metals in shunting mechanisms using synchrotron-based techniques (Preprint)

P. Geiger, G. Hahn, P. Fath

Record efficiency of 16.7% in EFG ribbon silicon (Preprint)

G. Hahn, A. M. Gabor

16% efficiency on encapsulated large area screen printed string ribbon cell (Preprint)

G. Hahn, S. Seren, D. Sontag, A. Gutjahr, L. Laas, A. Schönecker

Over 10% efficient screen printed RGS solar cells (Preprint)

A. Hauser, I. Melnyk, P. Fath, S. Narayanan, S. Roberts, T. M. Bruton

A simplified process for isotropic texturing of mc-Si (Preprint)

M. Mueller, R. Kopecek, P. Fath, C. Zahedi, K. Peter

Silicon LPE on substrates from metallurgical silicon feedstock for large scale production (Preprint)

E. Rüland, P. Fath, T. Pavelka, A. Pap, K. Peter, J. Mizsei

Comparative study on emitter sheet resistivity measurements for inline quality control (Preprint)

A. Schneider, T. Pernau, K. Peter, P. Fath

Mechanical wafer stability enhancements and texturing effects of remote downstream plasma etching (Preprint)

D. Sontag, G. Hahn, P. Fath, E. Bucher, W. Krühler

Texturing techniques and resulting solar cell parameters on tri-silicon material (Preprint)

Conference on PV in Europe from PV Technology to Energy Solutions, 7-11 October 2002, Rome, Italy

K. Faika, P. Fath

Formation of a rectifying p+ n+-junction using P-paste during Al/P-codiffusion  (Preprint)

T. Pernau, P. Fath

Phase-sensitive LBIC analysis

W. Jooss, B. Fischer, P. Fath, S. Roberts, T.M. Bruton

Processing and characterisation of large area buried contact solar cells on multicrystalline silicon with a record efficiency of 17.5 % (Preprint)

A. Schneider, G. Bühler, F. Huster, K. Peter, P. Fath

Impact of individual process steps on the stability of silicon solar cells studied with a simple mechanical stability tester (Preprint)

G. Schubert, B. Fischer, P. Fath

Formation and nature of Ag thick film front contacts on crystalline silicon solar cells (Preprint)

29th IEEE Photovoltaic Specialists Conference, 20-24 May 2002, New Orleans, USA

B. Fischer, M. Keil, P. Fath, E. Bucher

Scanning IQE-measurement for accurate current determination on very large area solar cells (Preprint)

G. Hahn, A. Hauser, A. M. Gabor, M. C. Cretella

15% efficient large area screen printed string ribbon solar cells (Preprint)

A. Hauser, A. W. Weeber, W. J. Soppe, P. Fath, E. Bucher

Comparison of remote and direct plasma silicon nitride (Preprint)

W. Jooss, W. Neu, K. Faika, H. Knauss, A. Kress, S. Keller, P. Fath, E. Bucher

Process and technology development for back contact silicon solar cells (Preprint)

W. Jooss, P. Fath, E. Bucher, S. Roberts, T.M. Bruton

Large area multicrystalline silicon buried contact solar cells with bulk passivation and an efficiency of 17.5% (Preprint)

T. Pernau, P. Fath, E. Bucher

Phase-sensitive LBIC analysis  (Preprint)

A. Schneider, C. Gerhards, P. Fath, E. Bucher, R.J.S. Young, J.A. Raby, A.F. Carroll

Bow reducing factors for thin screenprinted mc-Si solar cells with Al BSF (Preprint)

P. Geiger, G. Kragler, G. Hahn, P. Fath, E. Bucher

Spatially resolved lifetimes in EFG and string ribbon silicon after gettering and hydrogenation steps (Preprint)

17th European Solar Energy Conference and Exhibition, 22-26 October 2001, Munich, Germany
A. Hauser, G. Hahn, M. Spiegel, H. Feist, O. Breitenstein, J.P. Rakotoniaina, P. Fath, E. Bucher

Comparison of different techniques for edge isolation
(Preprint)

B. Fischer, M. Keil, P. Fath, E. Bucher

Simplified RP-PERC process with two high-temperature steps 
(Preprint)

B. Terheiden, B. Fischer, P. Fath, E. Bucher

Highly efficient mechanically V-textured silicon solar cells applying a novel shallow angle contacting scheme 
(Preprint)

T. Pernau, G. Hahn, M. Spiegel, G. Dietsche

Bulk hydrogenation of mc silicon materials and solar cells: from research lab to PV-industry 
(Preprint)

T. Pernau, M. Spiegel, P. Fath, E. Bucher

High-speed and high accuracy IQE and leff-mapping – a tool for advanced quality control in the PV-industry
(Preprint)

W. Neu, S. Keller, P. Fath, E. Bucher

Progress in monolithic integrated monocrystalline Si solar cells 
(Preprint)

F. Huster, P. Fath, E. Bucher

Roller printed mc-Si solar cells with optimized fill factors of 78% 
(Preprint)

C. Gerhards, A. Fischer, M. Spiegel, P. Fath, E. Bucher, B. Leifhelm, M. Weck

High throughput mechanical structuring system for solar cell wafers
(Preprint)

H. Knauss, W. Jooss, S. Roberts, T.M. Bruton, R. Toelle, P. Fath, E. Bucher

Emitter wrap through solar cells using electroless plating metallisation 
(Preprint)

A. Schneider, C. Gerhards, F. Huster, W. Neu, M. Spiegel, P. Fath, E. Bucher, R.J.S Young, A.G. Prince, J.A. Raby, A.F. Carroll

Al BSF for thin screenprinted multicrystalline Si solar cells  
(Preprint)

R. Kopecek, K. Peter, W. Jooss, P. Fath, E. Bucher

Novel metallisation method for buried contact silicon solar cells 
(Preprint)

R. Kopecek, K. Peter, P. Fath, E. Bucher

Epitaxial layers on low cost silicon substrates for industrial scale production 
(Preprint)

S. Keller, W. Neu, P. Fath, E. Bucher

Quantitative comparison of different geometries for HighVo solar cells 
(Preprint)

W. Joos, P. Fath, E. Bucher, S. Roberts, T.M. Bruton

Process development for large area buried contact solar cells on multicrystalline silicon 
(Preprint)

P. Geiger, G. Kragler, G. Hahn, P. Fath, E. Bucher

Lifetime enhancement in string ribbon silicon – a study based on spatially resolved measurements 
(Preprint)

P.Geiger, G.Kragler, G.Hahn, P.Fath, E.Bucher

Spatially resolved lifetime investigations of Al - and P-gettering in combination with remote hydrogen plasma passivation in EFG ribbon silicon 
(Preprint)

D. Sontag, G. Hahn, P. Fath, E. Bucher

Investigation of the local minority charge carrier diffusion constants of different silicon materials 
(Preprint)

G. Hahn, C. Haessler, M. Langenkamp

12.5% efficient RGS silicon solar cells with carrier collecting channels
(Preprint)

G. Hahn, A. Hauser, A. M. Gabor

14% efficient large area screen printed string ribbon solar cells
(Preprint)

12th International Photovoltaic Science and Engineering Conference, 11-15 June 2001, Jeju, South-Korea
K. Peter, R. Kopecek, J. Hoetzel, P. Fath, E. Bucher

Thin film silicon solar cells on upgraded metallurgical silicon substrates prepared by liquid phase epitaxy
(Journal Paper)

M. Spiegel, C. Gerhards, F. Huster, W. Jooss, P. Fath, E. Bucher

Industrially attractive front contact formation methods for mechanically V-grooved multicrystalline silicon solar cells
(Journal Paper)

A. Hauser, M. Spiegel, P. Fath, E. Bucher

Influence of an ammonia activation prior to the PECVD-SiN deposition on the solar cell performance
(Journal Paper)

G. Hahn, P. Geiger, D. Sontag, P. Fath, E. Bucher

Influence of hydrogen passivation on majority and minority charge carrier mobilities in ribbon silicon
(Journal Paper)

W. Neu, A. Kress, W. Jooss, P. Fath, E. Bucher

Low-cost multicrystalline back-contact siliconsolar cells with screen printed metallization
(Journal Paper)

P. Fath, H. Nussbaumer, R. Burkhardt

Industrial manufacturing of semitransparentcrystalline silicon POWER solar cells
(Journal Paper)

28th IEEE Photovoltaic Specialists Conference, 15-22 September 2000, Anchorage, USA
A. Hauser, M. Spiegel, P. Fath, E. Bucher

Investigations on hydrogen in silicon by means of lifetime measurements
(Preprint)

J. Hoetzel, K. Peter, R. Kopecek, P. Fath, E. Bucher, C Zahedi

Characterisation of LPE thin film silicon on low cost silicon substrates
(Preprint)

M. Spiegel, B. Fischer, S. Keller, E. Bucher

Separation of bulk diffusion length & back surface recombination velocity by improved IQE-analysis
(Preprint)

B. Terheiden, P. Fath, E. Bucher

The MECOR (mechanically corrugated) silicon solar cell concept
(Preprint)

R. Kuehn, P. Fath, E. Bucher

Effects of pn-junctions bordering on surfaces investigated by means of 2D-modeling
(Preprint)

A. Kress, R. Tölle, T. Bruton, P. Fath, E. Bucher

10 x 10 cm2 screen printed back contact cell with a selective emitter
(Preprint)

G. Hahn, P. Geiger, P. Fath, E. Bucher

Hydrogen passivation of ribbon silicon – electronic properties and solar cell results
(Preprint)

K. Faika, M. Wagner, P. Fath, E. Bucher

Simplification of EWT (emitter wrap-through) solar cell fabrication using Al-P-codiffusion
(Preprint)

W. Jooss, H. Knauss, F. Huster, P. Fath, E. Bucher R. Tölle, T.M. Bruton

Back contact buried contact solar cells with metallization wrap around electrodes
(Preprint)

B. Finckenstein, H. Horst, P. Fath, E. Bucher 

Thin mc Si low cost solar cells with 15% efficiency
(Preprint)

F. Huster, P. Fath, E. Bucher

Roller printed multicrystalline silicon solar cells with 16% efficiency and 25µm Finger width
(Preprint)

16th European Solar Energy Conference and Exhibition, 1-5 May 2000, Glasgow, UK
G. Hahn, C. Gerhards, M. Spiegel, C. Zechner, P. Fath, G. Willeke, E. Bucher

Overview and results of the EC HEXSI project
(Preprint)

A. Kress, P. Fath, E. Bucher

Recent results in low cost back contact solar cells
(Preprint)

A. Kress, T. Pernau, P. Fath, E. Bucher 

LBIC measurements on low cost back contact solar cells
(Preprint)

O. Schenker, M. Klenk, E. Bucher

In situ resistivity measurements of CuGaSe2 absorbers prepared by rapid thermal processing
(Preprint)

B. Fischer, P. Fath, E. Bucher

Evaluation of solar cell j(V)-measurements with a distributed series resistance model
(Preprint)

R. Kopecek, J. Hötzel, S. Volz, K. Peter, E. Bucher

Transport properties of silicon layers grown by liquid phase epitaxy (LPE) for photovoltaic applications
(Preprint)

T. Pernau, M. Spiegel, G. Kragler, P. Fath, E.Bucher

Hydrogen passivation and silicon nitride depostion using an integrated LPCVD process
(Preprint)

J. Hoetzel, R. Kopecek, S. Volz, K. Peter, P. Fath, E. Bucher

Low cost thin film silicon cells on upgraded metallurgical grade (UMG) silicon substrates prepared by liquid phase epitaxy (LPE)
(Preprint)

P. Geiger, G. Hahn, P. Fath, E. Bucher, R. Wallace

Characterisation of string ribbon silicon material and solar cells
(Preprint)

P. Geiger, P. Raue, G. Hahn, P. Fath, E. Bucher, E. Buhrig, H.J. Möller

Multicrystalline SiGe solar cells with Ge content above 10 at%
(Preprint)

B. von Finkenstein, M. Spiegel, P. Fath and E. Bucher

Local back surface field on thin low cost silicon solar cells
(Preprint)

W. Jooss, M.Spiegel, P. Fath, E. Bucher S. Roberts, T.M. Bruton

Large area buried contact solar cells on multcrystalline silicon with mechanical front surface texturisation and bulk passivation
(Preprint)

W. Jooss, K. Blaschek, R. Tölle, T.M. Bruton, P. Fath, E. Bucher

17% back contact buried solar cells
(Preprint)

F. Huster, M. Spiegel, P. Fath, E. Bucher

Progress of the roller-printing metallization technique towards industrially compatible alternative to screen-printing
(Preprint)

B. Terheiden, G. Hahn, P. Fath, E. Bucher

The lamella silicon solar cell
(Preprint)

S. Keller, M. Wagner, S. Scheibenstock, W. Jooss, A. Kress, G. Hahn, P. Fath, E. Bucher

Simple mini module fabrication schemes for high voltage crystalline silicon solar cells
(Preprint)

C. Gerhards, A. Fischer, P. Fath, E. Bucher

Mechanical microtexturisation for microcrystalline Si solar cells
(Preprint)

K. Faika, R. Kühn, P. Fath, E. Bucher

Novel techniques to prevent edge isolation of silicon solar cells by avoiding leakage currents between the emitter and the aluminium-rear-contact
(Preprint)

M. Klenk, O. Schenker, V. Alberts, E. Bucher 

X-ray fluorescence investigation of the material loss from chacopyrite absorbers prepared by two processes
(Preprint)

11th International Photovoltaic Science and Engineering Conference, 20-24 September 1999, Hokkaido, Japan
C. Zechner, B. Damiani, B. Terheiden

Single diffusion selective emitter on mechnaically textured Si solar cells with plateaus and screen-printed metallisation

A. Boueke, R. Kuehn, P. Fath, G. Willeke, E. Bucher

Latest resutls of semitransparent power silicon solar cells

S. Keller, S. Scheibenstock, P. Fath, G. Willeke, E. Bucher

Progress in monolithic series connection of wafer based crystalline silicon solar cells by the novel 'HighVo' (high voltage) cell concept

A. Kress, P. Fath, G. Willeke, E. Bucher

Low cost back contact silicon solar cells 

2nd World Conference on Photovoltaic Solar Energy, 6-10 July 1998, Vienna, Austria
V. Alberts, J.H. Schön, O. Schenker, E. Bucher

Material properties and growth of CuInSe2 and its alloys prepared by various selenization processes

M. Klenk, O. Schenker, F. Raiser, K. Friemelt, E. Bucher

CuGaSe2 based thin film solar cells fabricated by rapid thermal processing
(Preprint)

V. Alberts, S. Zweigart, J.H. Schön, H.W. Schock, E. Bucher

Material properties of Cu(In,Ga)Se2 thin films prepared by low cost, fast processing techniques

F. Duerinckx, J. Szlufcik, J. Nijs, R. Mertens, C. Marckmann, P. Fath, G. Willeke

High efficency, mechanically V-textured, screen printed multicrystalline silicon solar cells with silicon nitride passivation

B. Bitnar, R. Glatthaar, C. Marckmann, M. Spiegel, R. Tölle, P. Fath, G. Willeke, E. Bucher

Lifetime investigations on screenprinted silicon solar cells
(Preprint)

R. Kühn, R. Boueke, M. Wibral, R. Zechner, P. Fath, G. Willeke, E. Bucher

Investigation of the effect of p/n-junctions bordering on the surface of silicon solar cells 
(Preprint)

M. Spiegel, H. Nussbaumer, M. Roy, F. Ferrazza, S. Narayanan, P. Fath, G. Willeke, E. Bucher

Successful implemenatation of the microwace induced remote hydrogen plasma passivation in a standard multicrystalline silicon solar cell production line
(Preprint)

A. Kress, P. Fath, G. Willeke, E. Bucher

Low-cost back contact silicon solar cells applying the emitter-wrap through (EWT) concept

A. Schönecker, A.W. Weber, W.C. Sinke, C. Zechner, A .Kress, P. Fath

Attacking limiting factors in 10x10cm2 multicrystalline silicon; emitter-wrap through solar cells design and processing

M. Spiegel, G. Hahn, W. Jooss, S. Keller, P. Fath, G. Willeke, E. Bucher

Investigation of hydrogen diffusion; effusion and passivation in solar cells using different multicrystalline silicon base materials
(Preprint)

W. Jooss, G. Hahn, P. Fath, G. Willeke, E. Bucher

Improvement of diffusion lenghts in multicrystalline Si by P-Al co-gettering during solar cell processing 
(Preprint)

C. Zechner, G. Willeke, E. Bucher

Light trapping in silicon solar cells with a mechanically formed blazed surface texture

A. Boueke, R. Kühn, M. Wibral, P. Fath, G. Willeke, E. Bucher

Progress in semitransparent crystalline silicon solar cells
(Preprint)

C. Gerhards, F. Huster, M. Spiegel, C. Marckmann, P. Fath, G. Willeke, E. Bucher, J. Creager, S. Narayanan

Progress in machine and tool development towards the implementation of the mechanical texturization in a cr Si solar cell production line
(Preprint)

G. Hahn, C. Zechner, M. Spiegel, W. Joos, P. Fath, G. Willeke, E. Bucher

Mechanical texturization and hydrogen passivation of RGS (ribbon growth on substrates) silicon solar cells 
(Preprint)

R. Kühn, A. Boueke, M. Wibral, M. Spiegel, P. Fath, G. Willeke, E. Bucher

11% semitransparent bifacially active power crystalline silicon solar cell 
(Preprint)

26th IEEE Photovoltaic Specialists Conference,  30 September - 03 October 1997, Anaheim, CA, USA
B. Terheiden, R. Kühn, C. Zechner, P. Fath, G. Willeke, E. Bucher

Progress on the LOPE (local point contact and shallow angle evaporation) silicon solar cell 

G. Hahn, W. Jooss, M. Spiegel, P. Fath, G. Willeke, E. Bucher

Improvement of mc Si solar cells by Al-gettering and hydrogen passivation
(Preprint)

C. Gerhards, C. Marckmann, R. Tölle, M. Spiegel, P. Fath, G. Willeke, E. Bucher

Mechanically V-textured low cost multicrystalline silicon solar cells with a novel printing metallization

M. Spiegel, R. Tölle, C. Gerhards, C. Marckmann, H. Nussbaumer, P. Fath, G. Willeke, E. Bucher

Implementation of hydrogen passivation in an industrial low-cost multicrystalline silicon solar cell process

C. Zechner, G. Hahn, W. Jooss, M. Wibral, B. Bitnar, S. Keller, M. Spiegel, P. Fath, G. Willeke, E. Bucher

Systematic study towards high efficiency multicrystalline silicon solar cells with mechanical surface texturization

14th European Photovoltaic Solar Energy Conference , Barcelona, Spain 30 June - 4 July 1997
C. Zecher, P. Fath, G. Willeke, E. Bucher

Numerical simulation studies of mechanically textured high efficiency silicon solar cells

P. Fath, C. Zecher, B. Terheiden, A. Boueke, C. Marckmann, C. Gerhards, R. Tölle, M. Spiegel, G. Willeke, E. Bucher

Processing; characerisation and simulation of advanced mechanically textured mono- and multicrystalline silicon solar cells

S. Keller, C. Zecher, M. Spiegel, A. Boueke, B. Terheiden, P. Fath, G. Willeke, E. Bucher

Quantum efficency simulation and analysis of crystalline silicon solar cells by two dimensional device modeling
(Preprint)

G. Hahn, M. Spiegel, S. Keller, A. Boueke, P. Fath, G. Willeke, E. Bucher

Characterisation of RGS (ribbon growth on substrate) silicon material and solar cells
(Preprint)

R. Kühn, P. Fath, M. Spiegel, G. Willeke, E. Bucher, T.M. Bruton, N.B. Mason, R. Russel

Multicrystalline buried contact solar cells using a new eletroless plating metallization sequence and a high throughput mechanical groove formation

M. Spiegel, S. Keller, P. Fath, G. Willeke, E. Bucher

Microwave induced remote plasma (MIRHP) passivation of solar cells using different silicon base materials
(Preprint)

H. Nussbaumer, V.R. Nacci, G. Ginocchietti, C. Bucci, F. Ferrazza, C. Marckmann, C. Gerhards, R. Tölle, P. Fath, G. Willeke

Progress in industrial scale produced mechanically V-grooved multicrystalline silicon solar cells

O. Schenker, J.H. Schön, F. Raiser, K. Friemelt, E. Bucher, V. Alberts

Fabrication of CuGaSe2 thin film solar cells using rapid thermal processing

J. Hötzel, K. Peter, G. Willeke, E. Bucher

Crystalline silicon solar cells prepared by a rapid liquid phase epitaxy (RLPE) growth technique

B. Terheiden, P. Fath, G. Willeke, E. Bucher

LOPE (local point contact and shallow angle evaporation) silicon solar cells
(Preprint)

J.H. Schön, K. Friemelt, H. Riazi-Nejad, Ch. Kloc, E. Bucher

Annealing effects on the performance of CuGaSe2 single crystal solar cell 

B. Bitnar, R. Glatthaar, S. Keller, J. Kugler, M. Spiegel, P. Fath, G. Willeke, E. Bucher

Investigation of the passivation properties of PECVD-silicon-nitride layers on silicon solar cells
(Preprint)

R. Henschel, C. Zechner, G. Kragler, G. Willeke, E. Bucher

Double layer SIPOS/µc-Si/c-Si heterojunction solar cells