Fraunhofer-Institut für Solare Energiesysteme ISE
Fraunhofer-Institut für Solare Energiesysteme ISE

Dr. Johannes Greulich

Head of Group Inline Solar Cell Analytics and Simulation, Division Photovoltaics

Short biography

Johannes Greulich received the Diploma degree in physics from the University of Freiburg, Germany, in 2010. He received a Ph.D. Fellowship from the German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt) and the Ph.D. degree in physics in 2014 from the University of Freiburg, Germany for his work on electrical and optical simulation and characterization of crystalline silicon solar cells. From 2015 - 2017, he was Head of the Team for Inline Solar Cell Analysis and Image Processing at the Fraunhofer Institute for Solar Energy Systems. Since 2017, he is Head of the Group for Inline Solar Cell Analytics and Simulation at the Fraunhofer Institute. His research interests include the development of optical and electrical simulation and characterization methods focusing on crystalline silicon solar cells. 

Publications

Publication list on Google Scholar

Publication list from the Fraunhofer-Publica database:

Jahr
Year		Titel/Autor:in
Title/Author		Publikationstyp
Publication Type
2023 IV Measurements of Shingle Solar Cells
Krieg, Alexander; Ramspeck, Klaus; Wöhrle, Nico; Kunze, Philipp; Rauer, Michael; Fell, Andreas; Greulich, Johannes; Rein, Stefan		 Poster
2023 High Lifetime Ga-doped Cz-Si for Carrier-Selective Junction Solar Cells
Horzel, Jörg; Mack, Sebastian; Voicu Vulcanean, Ioan; Zimmermann, Karin; Pingel, Sebastian; Kwapil, Wolfram; Maischner, Felix; Höffler, Hannes; Bashardoust, Sattar; Wagenmann, Dirk; Greulich, Johannes; Seif, Johannes; Steinmetz, Anamaria; Rentsch, Jochen		 Zeitschriftenaufsatz
Journal Article
2023 Contactless Inline IV Measurement of Solar Cells Using an Empirical Model
Kunze, Philipp; Greulich, Johannes; Tummalieh, Ammar; Wirtz, Wiebke; Höffler, Hannes; Wöhrle, Nico; Glunz, Stefan; Rein, Stefan; Demant, Matthias		 Zeitschriftenaufsatz
Journal Article
2023 Understanding Current Paths and Temprature Distributions during 'Laser Enhanced Contact Optimization' (LECO)
Höffler, Hannes; Simon, Felix; Krassowski, Eve; Greulich, Johannes		 Konferenzbeitrag
Conference Paper
2023 IV Measurements of Shingle Solar Cells
Krieg, Alexander; Ramspeck, Klaus; Wöhrle, Nico; Kunze, Philipp; Rauer, Michael; Fell, Andreas; Greulich, Johannes; Rein, Stefan		 Konferenzbeitrag
Conference Paper
2023 Next Generation High-Throughput Cell Production Technologies: Impact on Equipment CAPEX, Footprint, and Labour Requirements
Goraya, Baljeet Singh; Georgiou-Sarlikiotis, Vasileios; Meßmer, Christoph Alexander; Wolf, Andreas; Zimmer, Martin; Klawitter, Markus; Lorenz, Andreas; Ourinson, Daniel; Schneider, Jale; Greulich, Johannes; Emanuel, Gernot; Clement, Florian; Nold, Sebastian		 Vortrag
Presentation
2023 Process influences on LeTID in Ga-doped silicon
Maischner, Felix; Kwapil, Wolfram; Greulich, Johannes; Jung, Yujin; Höffler, Hannes; Saint-Cast, Pierre; Schubert, Martin; Rein, Stefan; Glunz, Stefan		 Zeitschriftenaufsatz
Journal Article
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 LeTID in PERC Cells from Gallium-Doped Czochralski Silicon: Extent, Accelerated Testing and Mitigation via an Adapted Firing Process
Maischner, Felix; Greulich, Johannes; Kwapil, Wolfram; Ourinson, Daniel; Glunz, Stefan; Rein, Stefan		 Vortrag
Presentation
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 Assessing Current-Voltage Measurements of Busbarless Solar Cells
Rauer, Michael; Krieg, Alexander; Pingel, Sebastian; Fell, Andreas; Wöhrle, Nico; Greulich, Johannes; Hohl-Ebinger, Jochen; Rein, Stefan		 Vortrag
Presentation
2022 Lessons Learned From 25 Years Production Technology Research & Development
Preu, Ralf; Rentsch, Jochen; Rein, Stefan; Clement, Florian; Nekarda, Jan; Saint-Cast, Pierre; Lohmüller, Elmar; Lohmüller, Sabrina; Greulich, Johannes; Wöhrle, Nico; Pingel, Sebastian; Steinmetz, Anamaria; Baliozian, Puzant; Nold, Sebastian; Goraya, Baljeet Singh; Glunz, Stefan; Bett, Andreas W.		 Konferenzbeitrag
Conference Paper
2022 Laser-enhanced Contact Optimization on iTOPCon Solar Cells
Fellmeth, Tobias; Höffler, Hannes; Mack, Sebastian; Krassowski, Eve; Krieg, Katrin; Kafle, Bishal; Greulich, Johannes		 Zeitschriftenaufsatz
Journal Article
2022 Current-voltage characteristics of silicon solar cells: Determination of Base Doping Concentration and Hysteresis Correction
Kemmer, Tobias; Greulich, Johannes; Krieg, Alexander; Rein, Stefan		 Zeitschriftenaufsatz
Journal Article
2022 Contactless Measurement of Current-Voltage Characteristics for Silicon Solar Cells
Greulich, Johannes; Wirtz, Wiebke; Höffler, Hannes; Wöhrle, Nico; Juhl, Matthias K.; Kunz, Oliver; Rein, Stefan; Bett, Andreas W.		 Zeitschriftenaufsatz
Journal Article
2022 Inline-Feasible Contrast Separation in Luminescence Imaging for Silicon Solar Cells
Dost, Georg; Höffler, Hannes; Greulich, Johannes		 Zeitschriftenaufsatz
Journal Article
2022 21.4% Efficient SMART mono-Si PERC Solar Cells with Adapted Firing Process for LeTID Mitigation
Maischner, Felix; Maus, Stephan; Greulich, Johannes; Lohmüller, Sabrina; Lohmüller, Elmar; Saint-Cast, Pierre; Ourinson, Daniel; Hergert, Karin; Riepe, Stephan; Glunz, Stefan; Rein, Stefan		 Konferenzbeitrag
Conference Paper
2022 High Lifetime Ga-Doped Cz-Si for Carrier Selective Junction Solar Cells
Horzel, Jörg; Mack, Sebastian; Voicu Vulcanean, Ioan; Zimmermann, Karin; Pingel, Sebastian; Kwapil, Wolfram; Maischner, Felix; Höffler, Hannes; Bashardoust, Sattar; Wagenmann, Dirk; Greulich, Johannes; Seif, Johannes; Steinmetz, Anamaria; Rentsch, Jochen		 Konferenzbeitrag
Conference Paper
2022 Assessing Current-Voltage Measurements of Busbarless Solar Cells
Rauer, Michael; Krieg, Alexander; Fell, Andreas; Pingel, Sebastian; Wöhrle, Nico; Greulich, Johannes; Rein, Stefan; Schubert, Martin; Hohl-Ebinger, Jochen		 Zeitschriftenaufsatz
Journal Article
2022 Enlarged Firing Window and Efficiency Boosting of PERC Solar Cells by 'Laser Enhanced Contact Optimization' (LECO)
Höffler, Hannes; Fellmeth, Tobias; Maischner, Felix; Greulich, Johannes; Krassowski, Eve; Henning, Andreas		 Konferenzbeitrag
Conference Paper
2022 Low-Budget Photoluminescence Imaging
Greulich, Johannes; Brand, Andreas; Höffler, Hannes; Rein, Stefan		 Konferenzbeitrag
Conference Paper
2020 Verfahren zur Verarbeitung von Abbildungen von Halbleiterstrukturen, sowie zur Prozesscharakterisierung und Prozessoptimierung mittels semantischer Datenkompression
Demant, Matthias; Rein, Stefan; Kovvali, Aditya Sai; Greulich, Johannes; Wöhrle, Nico		 Patent
2014 Simulation and characterization of novel large-area silicon solar cells for industrial production
Greulich, Johannes		 Dissertation
Doctoral Thesis
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