Dr. Andreas Wolf

Head of Group Thermal Processes, Division Photovoltaics

Research Focus

  • Junction formation for Si solar cells
  • Development and characterisation of doping processes, such as POCl3 and BBr3-diffusion
  • Surface passivation by thermal oxidation
  • Characterisation and modelling of diffused junctions
    and passivated surfaces
  • Design and modelling of passivated solar cells with local contacts

Curriculum vitae

Since 2012 Head of Group “Thermal Processes” at Fraunhofer ISE
2009-2012 Head of Team “High Temperature Processes / Passivated Solar Cells” at Fraunhofer ISE
2008-2009 Scientist at Fraunhofer ISE
2007 Graduation to Dr. rer. nat. (corresponding to PhD) at Leibniz Universität Hannover
2004-2007 PhD student and scientist at Institute for Solar Energy Research in Hamelin (ISFH)
2003-2004 PhD student at Bavarian Center for Applied Energy Research (ZAE Bayern) in Erlangen
2003 Graduation to Diplom-Physiker (corresponding to Master of Physics) at Technische Universität Darmstadt

Publications

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2025 Approaches for Reducing Metallization-Induced Losses in Industrial TOPCon Solar Cells
Mack, Sebastian; Ourinson, Daniel; Meßmer, Marius; Teßmann, Christopher; Krieg, Katrin; Benick, Jan; Huyeng, Jonas; Greulich, Johannes; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2025 Project "BUSSARD" - a holistic development of high-efficiency solar cells covering innovative front-end, metallization and interconnection approaches
Lorenz, Andreas; Schube, Jörg; Nikitina, Veronika; Mack, Sebastian; Schweigert, Sebastian; Buddgard, Jonas; Albrecht, Jonas; Pospischil, Maximilian; Kraft, Achim; Wolf, Andreas; Hermle, Martin; Clement, Florian
Zeitschriftenaufsatz
Journal Article
2025 Development of Boron Emitters for Tunnel Oxide Passivated Contact Solar Cells with Current-Assisted Contact Formation
Mack, Sebastian; Krieg, Katrin; Teßmann, Christopher; Ourinson, Daniel; Polzin, Jana-Isabelle; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2024 TOPCon R&D Status and Developments Update
Wolf, Andreas; Mack, Sebastian; Richter, Armin; Krieg, Katrin; Lohmüller, Elmar; Polzin, Jana-Isabelle; Schube, Jörg; Thome, Fabian; Hammann, Benjamin; Hanser, Mario; Nagel, Henning; Horzel, Jörg; Schygulla, Patrick; Huyeng, Jonas; Kluska, Sven; Benick, Jan; Hofmann, Marc; Greulich, Johannes; Rentsch, Jochen; Clement, Florian; Glunz, Stefan; Preu, Ralf
Vortrag
Presentation
2024 Öffentlicher Abschlussbericht des Forschungsvorhabens "Produktionstechnologien für hochperformante kostengünstige IBC-Solarzellen" Akronym "POPEI" Teilvorhaben des Fraunhofer ISE: Frontend-Technologien IBC1
Wolf, Andreas; Polzin, Jana-Isabelle; Nold, Sebastian; Schmidt, Stefan; Krieg, Katrin
Bericht
Report
2024 Long-term stability of TOPCon solar cell precursor structures based on Ga-doped Cz-Si
Kamphues, Joshua; Lison, Jessica; Polzin, Jana-Isabelle; Wolf, Andreas; Lossen, Jan; Herguth, Axel; Hahn, Giso; Geml, Fabian
Zeitschriftenaufsatz
Journal Article
2024 Approaches for Reducing Metallization-Induced Losses and Cost in Industrial TOPCon Solar Cells
Mack, Sebastian; Ourinson, Daniel; Krieg, Katrin; Teßmann, Christopher; Meßmer, Marius; Haberstroh, René; Kluska, Sven; Greulich, Johannes; Huyeng, Jonas; Wolf, Andreas; Clement, Florian
Konferenzbeitrag
Conference Paper
2023 Numerical Simulation of Thermal Silicon Dioxide Growth in the Gap between Stacked Wafers
Meßmer, Marius; Emmer, Lena; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2023 Development and Process Optimization of a p-IBC Solar Cell with PECVD Deposited Passivated Contacts
Rachdi, Lazhar; Lossen, Jan; Rudolph, Dominik; Sharma, Y.P.; Koduvelikulathu, Lejo Joseph; Polzin, Jana-Isabelle; Schmidt, Stefan; Pernau, Thomas; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2023 Next Generation High Throughput Production Processes & Inline Characterization for Si Solar Cells
Clement, Florian; Meßmer, Marius; Höffler, Hannes; Ourinson, Daniel; Goraya, Baljeet Singh; Emanuel, Gernot; Meyer, Fabian; Lorenz, Andreas; Bartsch, Jonas; Demant, Matthias; Nold, Sebastian; Wolf, Andreas; Zimmer, Martin; Greulich, Johannes; Preu, Ralf; Köpge, Ringo; Ramspeck, Klaus; Hemsendorf, Marc; Straub, Benedikt; Ebert , Christian; Drews, Matthias; Jooss, Wolfgang; Schmid, Elina; Schönfelder, Stephan
Vortrag
Presentation
2023 F&E Entwicklungen vom Si-Material bis zum Modul: Nachhaltig und hochproduktiv
Wolf, Andreas
Vortrag
Presentation
2023 Quantifying Surface Recombination - Improvements in Determination and Simulation of the Surface Recombination Parameter J0s
Hammann, Benjamin; Steinhauser, Bernd; Fell, Andreas; Post, Regina; Niewelt, Tim; Kwapil, Wolfram; Wolf, Andreas; Richter, Armin; Höffler, Hannes; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
2023 Next Generation High-Throughput Cell Production Technologies: Impact on Equipment CAPEX, Footprint, and Labour Requirements
Goraya, Baljeet Singh; Georgiou-Sarlikiotis, Vasileios; Meßmer, Marius; Wolf, Andreas; Zimmer, Martin; Klawitter, Markus; Lorenz, Andreas; Ourinson, Daniel; Schneider, Jale; Greulich, Johannes; Emanuel, Gernot; Clement, Florian; Nold, Sebastian
Vortrag
Presentation
2023 Comprehensive Model for Charge Carrier Recombination in Czochralski-Grown Silicon Due to Oxygen Precipitation in Industrial Solar Cell Manufacturing
Maus, Stephan; Mack, Sebastian; Schön, Jonas; Meßmer, Marius; Wolf, Andreas; Paul, Oliver
Zeitschriftenaufsatz
Journal Article
2022 R&D Project NextTec - Next Generation High Throughput Production Processes & Inline Characterization for Si Solar Cells
Clement, Florian; Meßmer, Marius; Höffler, Hannes; Ourinson, Daniel; Goraya, Baljeet Singh; Emanuel, Gernot; Meyer, Fabian; Lorenz, Andreas; Bartsch, Jonas; Demant, Matthias; Nold, Sebastian; Wolf, Andreas; Zimmer, Martin; Preu, Ralf; Ramspeck, Klaus; Hemsendorf, Marc; Straub, Benedikt; Ebert , Christan; Drews, Matthias; Joos, Wolfgang; Schmid, Elina; Schönfelder, Stephan; Koepge, Ringo
Vortrag
Presentation
2022 Atmospheric Pressure Dry Etching of Polysilicon Layers for highly Reverse Bias-stable TOPCon Solar Cells
Kafle, Bishal; Mack, Sebastian; Teßmann, Christopher; Bashardoust, Sattar; Clochard, Laurent; Duffy, Edward; Wolf, Andreas; Hofmann, Marc; Rentsch, Jochen
Zeitschriftenaufsatz
Journal Article
2022 Lessons learned from 25 years production technology research & development
Preu, Ralf; Rentsch, Jochen; Rein, Stefan; Clement, Florian; Nekarda, Jan; Saint-Cast, Pierre; Lohmüller, Sabrina; Lohmüller, Elmar; Greulich, Johannes; Wöhrle, Nico; Mack, Sebastian; Wolf, Andreas; Pingel, Sebastian; Steinmetz, Anamaria; Baliozian, Puzant; Goraya, Baljeet Singh; Nold, Sebastian; Glunz, Stefan; Bett, Andreas W.
Vortrag
Presentation
2022 High Throughput Boron Emitter Formation from Pre-deposited APCVD BSG Layers for TOPCon Solar Cells
Meßmer, Marius; Bashardoust, Sattar; Belledin, Udo; Seren, Sven; Zunft, Heiko; Mack, Sebastian; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2022 Status and perspective of industrial TOPCon solar cell development at Fraunhofer ISE
Mack, Sebastian; Kafle, Bishal; Tessmann, Christopher; Krieg, Katrin; Bashardoust, Sattar; Lohmüller, Elmar; Belledin, Udo; Saint-Cast, Pierre; Höffler, Hannes; Ourinson, Daniel; Fellmeth, Tobias; Steinhauser, Bernd; Kluska, Sven; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2022 Status and perspective of industrial TOPCon solar cell development at Fraunhofer ISE
Mack, Sebastian; Kafle, Bishal; Teßmann, Christopher; Krieg, Katrin; Bashardoust, Sattar; Lohmüller, Elmar; Belledin, Udo; Saint-Cast, Pierre; Höffler, Hannes; Ourinson, Daniel; Fellmeth, Tobias; Steinhauser, Bernd; Kluska, Sven; Wolf, Andreas
Vortrag
Presentation
2022 Stack Diffusion Process for Cost- and Energy-efficient Boron Emitter Formation
Meßmer, Marius; Bashardoust, Sattar; Belledin, Udo; Kafle, Bishal; Goraya, Baljeet Singh; Seren, Sven; Zunft, Heiko; Mack, Sebastian; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2022 On retrograde phosphorus concentration depth profiles in silicon after POCl3 diffusion and thermal oxidation
Horzel, Jörg; Mack, Sebastian; Meßmer, Marius; Schmidt, Stefan; Richter, Susanne; Wolf, Andreas; Schön, Jonas; Rentsch, Jochen
Konferenzbeitrag
Conference Paper
2022 TOPCon Silicon Solar Cells. From Pilot Line to Fab
Mack, Sebastian; Kafle, Bishal; Krieg, Katrin; Teßmann, Christopher; Bashardoust, Sattar; Wolf, Andreas; Kluska, Sven; Rentsch, Jochen; Preu, Ralf
Vortrag
Presentation
2022 Uniformity Analysis of Metallization-Induced Recombination Losses by Photoluminescence Imaging
Wolf, Andreas; Herrmann, David; Falconi, David; Ourinson, Daniel; Brand, Andreas; Lohmüller, Sabrina; Höffler, Hannes; Fell, Andreas
Konferenzbeitrag
Conference Paper
2021 Revised Parametrization of the Recombination Velocity at SiO2/SiNX-Passivated Phosphorus-Diffused Surfaces
Wolf, Andreas; Egle, J.; Mack, Sebastian; Höffler, Hannes; Herrmann, D.; Lohmüller, Sabrina; Horzel, Jörg; Fell, Andreas
Vortrag
Presentation
2021 Progress in P-type Tunnel Oxide-Passivated Contact Solar Cells with Screen-Printed Contacts
Mack, Sebastian; Herrmann, D.; Lenes, Martijn; Renes, M.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2021 SMART Cast-Monocrystalline p-Type Silicon Passivated Emitter and Rear Cells: Efficiency Benchmark and Bulk Lifetime Analysis
Maus, Stephan; Maischner, Felix; Riepe, Stephan; Greulich, Johannes M.; Lohmüller, Elmar; Schindler, Florian; Saint-Cast, Pierre; Krenckel, Patricia; Hess, A.; Lohmüller, Sabrina; Wolf, Andreas; Preu, Ralf
Zeitschriftenaufsatz
Journal Article
2021 Increasing Throughput of Industrial PERC Production
Meßmer, Marius; Wolf, Andreas; Zimmer, Martin; Meyer, Fabian; Hoppe, Georg; Lorenz, Andreas; Tepner, Sebastian; Ourinson, Daniel; Emanuel, Gernot; Nold, Sebastian; Goraya, Baljeet Singh; Clement, Florian
Zeitschriftenaufsatz
Journal Article
2021 Experimental and Theoretical Study of Oxygen Precipitation and the Resulting Limitation of Silicon Solar Cell Wafers
Schön, Jonas; Niewelt, Tim; Mu, D.; Maus, Stephan; Wolf, Andreas; Murphy, J.D.; Schubert, Martin C.
Zeitschriftenaufsatz
Journal Article
2021 High Throughput Solar Cell Processing by Oxidation of Wafer Stacks
Meßmer, Marius; Lohmüller, Sabrina; Braun, F.; Weber, Julian; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2021 Spatially Resolved Determination of Metallization-Induced Recombination Losses Using Photoluminescence Imaging
Herrmann, D.; Falconi, D.R.; Lohmüller, Sabrina; Ourinson, Daniel; Fell, Andreas; Höffler, Hannes; Brand, Andreas A.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2021 Microstructure beneath screen-printed silver contacts and its correlation to metallization-induced recombination parameters
Herrmann, D.; Fell, Andreas; Lohmüller, Sabrina; Mikolasch, Gabriele; Schmiga, Christian; Wolf, Andreas; Glunz, Stefan W.
Zeitschriftenaufsatz
Journal Article
2021 Revised Parametrization of the Recombination Velocity at SiO2/SiNx-Passivated Phosphorus-Diffused Surfaces
Wolf, Andreas; Egle, J.; Mack, Sebastian; Höffler, Hannes; Herrmann, D.; Lohmüller, Sabrina; Horzel, Jörg; Fell, Andreas
Zeitschriftenaufsatz
Journal Article
2021 RHINO "Realization of High efficiency Industrial N-type sOlar cells with selective emitter"
Wolf, Andreas
Vortrag
Presentation
2021 Industrial High Throughput Emitter Formation and Thermal Oxidation for Silicon Solar Cells by the High Temperature Stack Oxidation Approach
Meßmer, Marius; Lohmüller, Sabrina; Weber, Julian; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2020 High Throughput Low Energy Industrial Emitter Diffusion and Oxidation
Meßmer, Marius; Lohmüller, Sabrina; Weber, Julian; Piechulla, A.; Nold, Sebastian; Horzel, Jörg; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2020 POCl3-Based Emitter Diffusion Process with Lower Recombination Current Density and Homogeneous Sheet Resistance for Nanotextured Monocrystalline Silicon with atmospheric Pressure Dry Etching
Khan, N.W.; Ridoy, Ahmed Ismail; Kafle, Bishal; Klitzke, Malte; Schmidt, Stefan; Clochard, Laurent; Wolf, Andreas; Hofmann, Marc; Rentsch, Jochen
Konferenzbeitrag
Conference Paper
2020 BBr3 Diffusion: Process Optimization for High-Quality Emitters with Industrial Cycle Times
Lohmüller, Elmar; Glatz, M.; Lohmüller, Sabrina; Belledin, Udo; Mack, Sebastian; Fellmeth, Tobias; Naber, R.C.G.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2020 High-Precision Alignment Procedures for Patterning Processes in Solar Cell Production
Lohmüller, Elmar; Weber, Julian; Demant, Matthias; Lohmüller, Sabrina; Gutscher, Simon; Saint-Cast, Pierre; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2020 Front Side Optimization on Boron- and Gallium-Doped Cz-Si PERC Solar Cells Exceeding 22% Conversion Efficiency
Lohmüller, Elmar; Greulich, Johannes M.; Saint-Cast, Pierre; Lohmüller, Sabrina; Schmidt, Stefan; Belledin, Udo; Fellmeth, Tobias; Mack, Sebastian; Emanuel, Gernot; Krieg, Katrin; Zimmer, Martin; Kunert, Roland; Zobel, Frank; Linse, Michael; Horzel, Jörg; Meßmer, Marius; Wolf, Andreas; Preu, Ralf
Konferenzbeitrag
Conference Paper
2019 P-Type Silicon Solar Cells with Passivating Rear Contact Formed by LPCVD p+ Polysilicon and Screen Printed Ag Metallization
Mack, Sebastian; Lenes, Martijn; Luchies, Jan-Marc; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2019 Passivation and Microstructure of Dual Intrinsic a-Si:H Layers for SHJ Solar Cells
Temmler, Jan; Bodlak, Lara; Moldovan, Anamaria; Bivour, Martin; Wolf, Andreas; Rentsch, Jochen
Konferenzbeitrag
Conference Paper
2019 Surface Passivation of Atmospheric Pressure Dry Etched Multicrystalline Silicon Surfaces
Ridoy, Ahmed Ismail; Kafle, Bishal; Khan, N.W.; Klitzke, Malte; Lohmüller, Sabrina; Clochard, Laurent; Duffy, Edward; Wolf, Andreas; Hofmann, Marc
Konferenzbeitrag
Conference Paper
2019 Numerical Simulations of Photoluminescence for the Precise Determination of Emitter Contact Recombination Parameters
Herrmann, D.; Lohmüller, Sabrina; Höffler, Hannes; Fell, Andreas; Brand, Andreas A.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2019 Inline Deposited PassDop Layers for Rear Side Passivation and Contacting of p-type c-Si PERL Solar Cells with High Bifaciality
Norouzi, M.H.; Saint-Cast, Pierre; Lohmüller, Elmar; Lohmüller, Sabrina; Steinhauser, Bernd; Wolf, Andreas; Hofmann, Marc
Konferenzbeitrag
Conference Paper
2019 Impact of Non-Uniform Carrier Density on the Determination of Metal Induced Recombination Losses
Herrmann, D.; Fell, Andreas; Höffler, Hannes; Lohmüller, Sabrina; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2019 Herstellungsverfahren für eine metallische Kontaktierungsstruktur und photovoltaische Solarzelle mit einer metallischen Kontaktierungsstruktur
Jäger, Ulrich; Lohmüller, Elmar; Lohmüller, Sabrina; Saint-Cast, Pierre; Wolf, Andreas
Patent
2019 Adaptation of the Industrial PERC Solar Cell Process Chain to Plated Ni/Cu/Ag Front Contact Metallization
Bay, Norbert; Fox, S.; Ren, P.; Burschik, J.; Jäger, Ulrich; Kühnlein, H.; Passing, M.; Pysch, D.; Sieber, M.; Lohmüller, Sabrina; Lohmüller, Elmar; Wolf, Andreas; Lee, B.
Konferenzbeitrag
Conference Paper
2019 Impact of POCl3 Diffusion Process Parameters on Oxygen Precipitation in Czochralski-Grown Silicon
Maus, Stephan; Lohmüller, Sabrina; Mu, D.; Schön, Jonas; Niewelt, Tim; Wolf, Andreas; Preu, Ralf
Konferenzbeitrag
Conference Paper
2019 P-Type Passivating Contact Solar Cells with Screen-Printed Silver Metallization
Mack, Sebastian; Fellmeth, Tobias; Lenes, Martijn; Luchies, Jan-Marc; Wolf, Andreas
Vortrag
Presentation
2018 Advancements in the Utilization of Screen-Printed Boron Doping Paste for High Efficiency Back-Contact Back-Junction Silicon Solar Cells
Huyeng, Jonas; Lang, S.F.; Efinger, Raphael; Schmidt, Stefan; Spribille, Alma; Bruge, D.; Wolf, Andreas; Keding, Roman; Doll, Oliver; Clement, Florian
Konferenzbeitrag
Conference Paper
2018 Efficiency Potential of P-Type PERT vs. PERC Solar Cells
Meier, S.; Wasmer, Sven; Fell, Andreas; Wöhrle, Nico; Greulich, Johannes M.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 Transfer of POCl3 diffusion processes from atmospheric pressure to high throughput low pressure
Lohmüller, Sabrina; Schmidt, Stefan; Lohmüller, Elmar; Piechulla, A.; Belledin, Udo; Herrmann, D.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 Fabrication of APCVD PSG Emitter-Based Industrial PERC Solar Cells Reaching >21.0% Conversion Efficiencies
Kafle, Bishal; Saint-Cast, Pierre; Belledin, Udo; Lohmüller, Sabrina; Zunft, H.; Knauss, H.; Palinginis, P.; Kusterer, C.; Köhler, R.; Zehl, T.; Wolf, Andreas; Hofmann, Marc
Konferenzbeitrag
Conference Paper
2018 Role of oxygen for boron diffusion from borosilicate glass layers deposited by atmospheric pressure chemical vapor deposition
Meier, S.; Wolf, Andreas; Mack, Sebastian; Lohmüller, Sabrina; Glunz, Stefan W.
Zeitschriftenaufsatz
Journal Article
2018 Control of boron diffusion from APCVD BSG layers by interface oxidation
Meier, S.; Lohmüller, Sabrina; Mack, Sebastian; Wolf, Andreas; Glunz, Stefan W.
Konferenzbeitrag
Conference Paper
2018 Challenges for the Quantification of Metal Induced Recombination Losses
Herrmann, D.; Lohmüller, Sabrina; Höffler, Hannes; Fell, Andreas; Brand, Andreas; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 Selective Emitter Using APCVD PSG Layer as Doping Source
Saint-Cast, Pierre; Belledin, Udo; Lohmüller, Elmar; Kafle, Bishal; Weber, Julian; Seren, Sabine; Lohmüller, Sabrina; Wolf, Andreas; Hofmann, Marc
Konferenzbeitrag
Conference Paper
2018 Analysis of Phosphosilicate Glass Structures Formed by Atmospheric Pressure and High Throughput Low Pressure POCl 3 Diffusion
Lohmüller, Sabrina; Meßmer, Marius; Schmidt, Stefan; Lohmüller, Elmar; Piechulla, A.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 Industry related approaches for bifacial p-type PERX solar cells
Fellmeth, Tobias; Meier, S.; Lohmüller, Elmar; Wöhrle, Nico; Spribille, Alma; Lohmüller, Sabrina; Saint-Cast, Pierre; Wolf, Andreas; Clement, Florian; Rein, Stefan; Preu, Ralf; Nakahara, M.; Dhamrin, Marwan; Knauss, H.; Haverkamp, H.; Steckemetz, S.; Bitnar, Bernd; Weber, T.; Palinginis, Phedon; Neuhaus, Dirk Holger
Zeitschriftenaufsatz
Journal Article
2018 Towards 90% Bifaciality for p-Type Cz-Si Solar Cells by Adaption of Industrial PERC Processes
Lohmüller, Elmar; Lohmüller, Sabrina; Norouzi, M.H.; Saint-Cast, Pierre; Weber, Julian; Meier, S.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 Development and characterization of multifunctional PECVD SiNX:P layers for laser-doped selective emitters
Norouzi, M.H.; Saint-Cast, Pierre; Lohmüller, Elmar; Weber, Julian; Gutscher, Simon; Bartsch, Jonas; Kluska, Sven; Steinhauser, Bernd; Lohmüller, Sabrina; Bitnar, Bernd; Neuhaus, Dirk Holger; Palinginis, P.; Benick, Jan; Hofmann, Marc; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2018 BBr3 diffusion with second deposition for laser-doped selective emitters from borosilicate glass
Lohmüller, Elmar; Lohmüller, Sabrina; Wöhrle, Nico; Belledin, Udo; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2017 Key aspects for fabrication of p-type Cz-Si PERC solar cells exceeding 22% conversion efficiency
Werner, Sabrina; Lohmüller, Elmar; Saint-Cast, Pierre; Greulich, Johannes M.; Weber, Julian; Schmidt, Stefan; Moldovan, Anamaria; Brand, Andreas; Dannenberg, Tobias; Mack, Sebastian; Wasmer, Sven; Demant, Matthias; Linse, Michael; Ackermann, Rupprecht; Wolf, Andreas; Preu, Ralf
Konferenzbeitrag
Conference Paper
2017 Bifacial p-type silicon PERL solar cells with screen-printed pure silver metallization and 89% bifaciality
Lohmüller, Elmar; Werner, Sabrina; Norouzi, M.H.; Mack, Sebastian; Demant, Matthias; Gutscher, Simon; Saint-Cast, Pierre; Wasmer, Sven; Wöhrle, Nico; Bitnar, Bernd; Steckemetz, S.; Palinginis, P.; Neuhaus, H.; König, M.; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2017 Structure and composition of phosphosilicate glass systems formed by POCl3 diffusion
Werner, Sabrina; Mourad, S.; Hasan, W.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2017 Fast co-diffusion process for bifacial n-type solar cells
Meier, S.; Maier, Stefan; Demberger, Carsten; Wolf, Andreas; Biro, Daniel; Glunz, Stefan W.
Zeitschriftenaufsatz
Journal Article
2017 Suitability of POCL3 diffusion processes with in-situ oxidation for forming laser-doped selective emitters with low carrier recombination
Werner, Sabrina; Lohmüller, Elmar; Weber, Julian; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2017 Development and characterization of multifunctional PassDop layers for local p+-laser doping
Norouzi, Mohammad H.; Saint-Cast, Pierre; Lohmüller, Elmar; Steinhauser, Bernd; Benick, Jan; Werner, Sabrina; Bitnar, Bernd; Palinginis, Phedon; Neuhaus, Dirk Holger; Hofmann, Marc; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2017 Internal resistance of rear totally diffused solar cells with line shaped contacts
Meier, S.; Saint-Cast, Pierre; Wöhrle, Nico; Fell, Andreas; Greulich, Johannes M.; Wolf, Andreas; Glunz, Stefan W.
Zeitschriftenaufsatz
Journal Article
2017 Development and characterization of AlOx/SiNx :B layer systems for surface passivation and local laser doping
Norouzi, Mohammad H.; Saint-Cast, Pierre; Jäger, Ulrich; Steinhauser, Bernd; Benick, Jan; Büchler, Andreas; Bitnar, Bernd; Palinginis, Phedon; Neuhaus, Dirk Holger; Wolf, Andreas; Hofmann, Marc
Zeitschriftenaufsatz
Journal Article
2017 Verfahren zur Dotierung von Halbleitersubstraten mittels eines Co-Diffusionsprozesses sowie mit diesem Verfahren hergestelltes dotiertes Halbleitersubstrat
Rothhardt, Philip; Wolf, Andreas; Meier, Sebastian; Biro, Daniel; Werner, Sabrina
Patent
2017 Co-diffused bi-facial PERT solar cells
Fellmeth, Tobias; Meier, S.; Clement, Florian; Wolf, Andreas; Knauss, H.; Havercamp, H.
Zeitschriftenaufsatz
Journal Article
2017 Low-Ohmic Contacting of Laser-Doped p-Type Silicon Surfaces with Pure Ag Screen-Printed and Fired Contacts
Lohmüller, Elmar; Werner, Sabrina; Norouzi, Mohammad H.; Gutscher, Simon; Demant, Matthias; Saint-Cast, Pierre; Linse, Michael; Bitnar, Bernd; Palinginis, Phedon; Neuhaus, Dirk Holger; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2017 On the nature of emitter diffusion and screen-printing contact formation on nanostructured silicon surfaces
Kafle, Bishal; Freund, Timo; Schön, Jonas; Werner, Sabrina; Lorenz, Andreas; Wolf, Andreas; Saint-Cast, Pierre; Clochard, Laurent; Duffy, Edward; Hofmann, Marc; Rentsch, Jochen
Zeitschriftenaufsatz
Journal Article
2017 Experimental verification of internal resistance moldels for PERT-type solar cells
Meier, S.; Unmüßig, Simon; Brand, Andreas A.; Saint-Cast, Pierre; Fellmeth, Tobias; Wolf, Andreas; Glunz, Stefan W.
Zeitschriftenaufsatz
Journal Article
2017 Challenges for lowly-doped phosphorus emitters in silicon solar cells with screen-printed silver contacts
Werner, Sabrina; Lohmüller, Elmar; Maier, Stefan; Mourad, S.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2016 All-diffused back-contact back-junction solar cell with aluminum-alloyed emitter - experiment and simulation
Wöhrle, Nico; Kimmerle, Achim; Greulich, Johannes M.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2016 Analysis of Al diffusion processes in TiN barrier layers for the application in silicon solar cell metallization
Kumm, J.; Samadi, H.; Chacko, Rony Vincent; Hartmann, Philip; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2016 Application and comparison of band gap narrowing models for passivated phosphorus doped silicon surfaces
Kimmerle, Achim; Greulich, Johannes M.; Haug, Halvard; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2016 Extending the limits of screen-printed metallization of phosphorus- and boron-doped surfaces
Werner, Sabrina; Lohmüller, Elmar; Wolf, Andreas; Clement, Florian
Zeitschriftenaufsatz
Journal Article
2016 Precise parameterization of the recombination velocity at passivated phosphorus doped surfaces
Kimmerle, Achim; Rahman, M.M.; Werner, Sabrina; Mack, Sebastian; Wolf, Andreas; Richter, Armin; Haug, Halvard
Zeitschriftenaufsatz
Journal Article
2016 On the emitter formation in nanotextured silicon solar cells to achieve improved electrical performances
Kafle, Bishal; Schön, Jonas; Fleischmann, C.; Werner, Sabrina; Wolf, Andreas; Clochard, Laurent; Duffy, Edward; Hofmann, Marc; Rentsch, Jochen
Zeitschriftenaufsatz
Journal Article
2016 Impact of Firing Temperature Profiles on Local BSF Formation in PERC Solar Cells
Mack, Sebastian; Richter, P.; Werner, Sabrina; Clement, Florian; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2016 Adhesion quality of evaporated aluminum layers on passivation layers for rear metallization of silicon solar cells
Kumm, J.; Hartmann, Philip; Eberlein, Dirk; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2016 Influence of surface near doping concentration on contact formation of silver thick film contacts
Rothhardt, Philip; Meier, S.; Hoenig, R.; Wolf, Andreas; Biro, Daniel
Zeitschriftenaufsatz
Journal Article
2016 Bifacial potential of single- and double-sided collecting silicon solar cells
Fertig, Fabian; Wöhrle, Nico; Greulich, Johannes M.; Krauß, Karin; Lohmüller, Elmar; Meier, S.; Wolf, Andreas; Rein, Stefan
Zeitschriftenaufsatz
Journal Article
2016 Low-temperature interconnection of PVD-aluminium metallization
Geipel, Torsten; Kumm, J.; Moeller, M.; Kroely, L.; Kraft, Achim; Eitner, Ulrich; Wolf, Andreas; Zhang, Z.; Wolfahrt, P.
Zeitschriftenaufsatz
Journal Article
2015 Status and perspective of emitter formation by POCl3-diffusion
Wolf, Andreas; Kimmerle, Achim; Werner, Sabrina; Maier, S.; Belledin, Udo; Meier, S.; Biro, Daniel
Konferenzbeitrag
Conference Paper
2015 Optimization of BBr3 diffusion processes for n-type silicon solar cells
Werner, Sabrina; Lohmüller, Elmar; Belledin, Udo; Vlooswijk, A.H.G.; Naber, R.C.G.; Mack, Sebastian; Wolf, Andreas
Konferenzbeitrag
Conference Paper
2015 Carrier-diffusion corrected J0-analysis of charge carrier lifetime measurements for increased consistency
Kimmerle, Achim; Greulich, Johannes M.; Wolf, Andreas
Zeitschriftenaufsatz
Journal Article
2015 Long-term and annealing stable, solderable PVD metallization with optimized Al diffusion barrier
Kumm, J.; Chacko, R.V.; Samadi, H.; Hartmann, P.; Eberlein, D.; Jäger, U.; Wolf, A.
Zeitschriftenaufsatz
Journal Article
2015 Codiffusion sources and barriers for the assembly of back-contact back-junction solar cells
Bin Tanvir, N.; Keding, Roman; Rothhardt, Philip; Meier, S.; Wolf, Andreas; Reinecke, Holger; Biro, Daniel
Zeitschriftenaufsatz
Journal Article
2014 Photovoltaische Solarzelle und Verfahren zum Herstellen einer photovoltaischen Solarzelle
Thaidigsmann, Benjamin; Lohmüller, Elmar; Clement, Florian; Wolf, Andreas; Biro, Daniel
Patent
2014 Codiffused bifacial n-type solar cells (CoBiN)
Rothhardt, Philip; Meier, S.; Demberger, Carsten; Wolf, Andreas; Biro, Daniel
Zeitschriftenaufsatz
Journal Article
2014 Verfahren zur Dotierung von Halbleitersubstraten
Rothhardt, Philip; Wolf, Andreas; Stoffels, Thomas; Biro, Daniel
Patent
2014 Verfahren zur Dotierung von Halbleitersubstraten sowie dotiertes Halbleitersubstrat
Rothhardt, Philip; Wolf, Andreas; Biro, Daniel; Belledin, Udo; Wufka, Christoph
Patent
2014 19.9 % efficient bifacial n-type solar cell produced by co-diffusion-cobin
Rothhardt, Philip; Meier, S.; Jiang, K.; Wolf, Andreas; Biro, Daniel
Konferenzbeitrag
Conference Paper
2014 Increased Reliability for J0-Analysis by QSSPC
Kimmerle, Achim; Rothhardt, Philip; Wolf, Andreas; Sinton, Ronald A.
Zeitschriftenaufsatz
Journal Article
2014 Optimization of multi-layer metallization design for large-area back-contact back-junction solar cells
Hendrichs, M.; Keding, Roman; Spribille, Alma; Fellmeth, Tobias; Nold, Sebastian; Clement, Florian; Wolf, Andreas; Biro, Daniel; Preu, Ralf
Konferenzbeitrag
Conference Paper
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