Dr. Martin C. Schubert

Head of Department Characterization and Simulation, Division Photovoltaics

Research focus

  • Silicon material analysis with focus on electrical material quality, solar cell efficiency potential and impurities
  • Solar cell analysis with focus on spatially resolved measurements
  • Modeling of impurity evolution during solar cell processing
  • Photoluminescence analysis: global measurements, imaging and spectroscopy 
  • Lock-in thermography
  • Other techniques for material and cell qualification
     

Curriculum vitae

since 2017 Head of Department Characterization and Simulation
2013-2014 Guest Professor at Meiji-University, Tokyo within the frame of a JSPS Fellowship for Foreign Researchers
2012-2016 Head of Group "Material and Cell Analysis" at Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany
2012 Research stay at the Australian National University, Canberra, Australia within a DAAD exchange fellowship
2009-2012 Head of Team "Silicon Material Characterization" at Fraunhofer ISE
2008-2009 Scientist at Fraunhofer ISE
2008 Graduation to Dr. rer. nat. (corresponding to PhD) at University of Konstanz/Fraunhofer ISE. Title (translated): "Detection of infrared radiation for material characterization of silicon for solar cells" (German)
2003 Graduation to Diplom-Physiker (corresponding to Master of Physics) at Albert-Ludwigs-University Freiburg, Germany. Title (translated): "Thermographic methods for spatially resolved measurement of carrier lifetime in silicon" (German) in cooperation with Fraunhofer ISE
2000 Graduation: "Licence de Physique" at Université Montpellier II Sciences et Techniques du Languedoc, Montpellier, France

Awards & outstanding achievements

2013-2014 Fellowship for foreign researchers of the Japanese Society of Promotion of Science JSPS (in conjunction with the von Alexander von Humboldt Society)
2013
Ulrich Gösele Young Scientist Award
since 2013 Humboldt fellow
2012 Fellowship for Scientific Exchange from the German Academic Exchange Service DAAD

Teaching experience

2017 Characterization of solar cells: From feedstock quality to final cell efficiency
University of Freiburg
2015-2016 Photovoltaische Energiekonversion I&II
(Prof. Dr. Stefan Glunz, Dr. Martin Schubert, Dr. Jan Christoph Goldschmidt), University of Freiburg
2013 Silicon Solar Cells – Principle, Material, Characterization
Meiji University, Kawasaki, Japan
2013 Silicon Solar Cells – Concept with Focus on Silicon Material
Nagoya University, Nagoya, Japan
since 2011 Crystalline Silicon Photovoltaics
(Prof. Dr. Stefan Glunz, Dr. Martin Schubert, Dr. Harry Wirth), University of Freiburg Master Online Photovoltaics (MOPV)

Publications

External publication list on Google Scholar

Publication list from the Fraunhofer-Publica database:

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2023 Spectrometric Characterization for Triple-Junction Solar Cells
Aulich, Johanna; Chojniak, David; Bett, Alexander J.; Steiner, Marc; Schindler, Florian; Siefer, Gerald; Schubert, Martin; Goldschmidt, Jan Christoph; Glunz, Stefan
Zeitschriftenaufsatz
Journal Article
2023 Measurement of Local Recombination Activity in High Diffusion Length Semiconductors
Heinz, Friedemann; Oezkent, Maximilian; Rittmann, Clara; Schindler, Florian; Schubert, Martin; Kwapil, Wolfram; Glunz, Stefan
Zeitschriftenaufsatz
Journal Article
2023 On the Conversion Between Recombination Rates and Electronic Defect Parameters in Semiconductors
Juhl, Mattias K.; Heinz, Friedemann; Coletti, Gianluca; Rougieux, Fiacre; Sun, Chang; Vacqueiro Contreras, Michelle; Niewelt, Tim; Krich, Jacob; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
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 Maximizing Current Density in Monolithic Perovskite Silicon Tandem Solar Cells
Heydarian, Minasadat; Meßmer, Christoph Alexander; Bett, Alexander J.; Heydarian, Maryamsadat; Chojniak, David; Kabakli, Özde Seyma; Tutsch, Leonard; Bivour, Martin; Siefer, Gerald; Schubert, Martin; Goldschmidt, Jan Christoph; Hermle, Martin; Glunz, Stefan; Schulze, Patricia
Zeitschriftenaufsatz
Journal Article
2023 Understanding Contact Nonuniformities at Interfaces in Perovskite Silicon Tandem Solar Cells Using Luminescence Imaging, Lock-In Thermography, and 2D/3D Simulations
Fischer, Oliver; Fell, Andreas; Meßmer, Christoph Alexander; Efinger, Raphael; Schindler, Florian; Glunz, Stefan; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
2023 Understanding the Impact of the Cooling Ramp of the Fast-Firing Process on Light- and Elevated-Temperature-Induced Degradation
Hammann, Benjamin; Aßmann, Nicole; Schön, Jonas; Kwapil, Wolfram; Schindler, Florian; Roder, Sebastian; Monakhov, Eduard V.; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
2023 Spatially Resolved and Subcell-Selective Implied Open-Circuit Voltage Measurements on Perovskite Silicon Tandem Solar Cells
Fischer, Oliver; Bui, Anh Dinh; Schindler, Florian; Macdonald, Daniel; Glunz, Stefan; Nguyen, Hieu T.; Schubert, Martin
Vortrag
Presentation
2023 Epitaxially Grown p-type Silicon Wafers Ready for Cell Efficiencies Exceeding 25%
Rittmann, Clara; Schindler, Florian; Richter, Armin; Niewelt, Tim; Stolzenburg, Hannah; Steinhauser, Bernd; Dalke, Jonas; Drießen, Marion; Weiss, Charlotte; Janz, Stefan; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
2023 Spectrometric Determination of Current Matching in Perovskite/Silicon Tandem Solar Cells
Bett, Alexander J.; Chojniak, David; Schachtner, Michael; Reichmuth, Kasimir; Schulze, Patricia; Kabakli, Özde Seyma; Heydarian, Minasadat; King, Hunter; Sittinger, Volker; Schindler, Florian; Goldschmidt, Jan Christoph; Hohl-Ebinger, Jochen; Siefer, Gerald; Bett, Andreas W.; Schubert, Martin
Konferenzbeitrag
Conference Paper
2023 Spectrometric Characterization of Monolithic Perovskite/Silicon Tandem Solar Cells
Bett, Alexander J.; Chojniak, David; Schachtner, Michael; Reichmuth, Kasimir; Kabakli, Özde Seyma; Schulze, Patricia; Fischer, Oliver; Schindler, Florian; Hohl-Ebinger, Jochen; Siefer, Gerald; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
2023 The Impact of Different Hydrogen Configurations on Light- and Elevated-Temperature-Induced Degradation
Hammann, Benjamin; Assmann, Nicole; Weiser, Philip M.; Kwapil, Wolfram; Niewelt, Tim; Schindler, Florian; Søndenå, Rune; Monakhov, Eduard V.; Schubert, Martin
Zeitschriftenaufsatz
Journal Article
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 A Grain Orientation-Independent Single-Step Saw Damage Gettering/Wet texturing Process for Efficient Silicon Solar Cells
Jung, Yujin; Min, Kwan Hong; Post, Regina; Kwapil, Wolfram; Schubert, Martin; Kim, Donghwan; Kang, Yoonmook; Lee, Hae-Sok
Zeitschriftenaufsatz
Journal Article
2023 Monolithic Two-Terminal Perovskite/Perovskite/Silicon Triple-Junction Solar Cells with Open Circuit Voltage > 2.8 V
Heydarian, Maryamsadat; Heydarian, Minasadat; Bett, Alexander J.; Bivour, Martin; Schindler, Florian; Hermle, Martin; Schubert, Martin; Schulze, Patricia; Borchert, Anna Juliane; Glunz, Stefan
Zeitschriftenaufsatz
Journal Article
2023 Spatially Resolved Power Conversion Efficiency for Perovskite Solar Cells via Bias-Dependent Photoluminescence Imaging
Bui, Anh Dinh; Nguyen, Dang-Thuan; Fell, Andreas; Mozaffari, Naeimeh; Ahmad, Viqar; Duong, The; Li, Li; Truong, Thien N.; Wibowo, Ary Anggara; Nguyen, Nhat Dang Khoa; Fischer, Oliver; Schindler, Florian; Schubert, Martin; Weber, Klaus J.; White, Thomas P.; Catchpole, Kylie R.; Catchpole, Kylie R.; Macdonald, Daniel; Nguyen, Hieu T.
Zeitschriftenaufsatz
Journal Article
2022 Monolithic 2-Terminal Perovskite Silicon Tandem Solar Cells
Schulze, Patricia; Kabakli, Özde Seyma; Meßmer, Christoph Alexander; Heydarian, Minasadat; Er-Raji, Oussama; Heydarian, Maryamsadat; Efinger, Raphael; Schultz-Wittmann, Oliver; Fischer, Oliver; Bett, Alexander J.; Tutsch, Leonard; Pingel, Sebastian; Schubert, Martin; Hatt, Thibaud; Erath, Denis; Bivour, Martin; Goldschmidt, Jan Christoph; Glunz, Stefan; Hermle, Martin
Vortrag
Presentation
2022 Combining drift-diffusion and equivalent-circuit models for efficient 3D tandem solar cell simulations
Fell, Andreas; Schultz-Wittmann, Oliver; Meßmer, Christoph Alexander; Schubert, Martin; Glunz, Stefan
Zeitschriftenaufsatz
Journal Article
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 Monolithic 2-Terminal Perovskite Silicon Tandem Solar Cells
Schulze, Patricia; Kabakli, Özde Seyma; McMullin, Kaitlyn; Heydarian, Minasadat; Er-Raji, Oussama; Heydarian, Maryamsadat; Efinger, Raphael; Schultz-Wittmann, Oliver; Meßmer, Christoph Alexander; Bett, Alexander J.; Fischer, Oliver; Tutsch, Leonard; Erath, Denis; Pingel, Sebastian; Hatt, Thibaud; Schubert, Martin; Bivour, Martin; Goldschmidt, Jan Christoph; Hermle, Martin; Glunz, Stefan
Vortrag
Presentation
2022 Microscopic Charge Carrier Lifetime Mapping for Silicon Material Analysis
Heinz, Friedemann; Oezkent, Maximilian; Rittmann, Clara; Schindler, Florian; Schubert, Martin; Kwapil, Wolfram; Glunz, Stefan
Vortrag
Presentation
2022 Upscaling of Perovskite-Silicon Tandem Solar Cells
Schultz-Wittmann, Oliver; Schulze, Patricia; Er-Raji, Oussama; Efinger, Raphael; Kabakli, Özde Seyma; Heydarian, Maryamsadat; Mc Mullin, Kaitlyn; Fischer, Oliver; Bett, Alexander J.; Erath, Denis; Pingel, Sebastian; Heitmann, Ulrike; Kiaee, Zohreh; Kohlstädt, Markus; Kore, Bhushan; Nagel, Henning; Schubert, Martin; Bivour, Martin; Goldschmidt, Jan Christoph; Borchert, Anna Juliane; Hermle, Martin; Glunz, Stefan
Konferenzbeitrag
Conference Paper
2022 Identification of the LeTID Defect Formation as a Hydrogen-Related Dissociation Process
Hammann, Benjamin; Rachdi, Lazhar; Kwapil, Wolfram; Schindler, Florian; Schubert, Martin
Konferenzbeitrag
Conference Paper
2022 Epitaxially grown p-type silicon wafers ready for cell efficiencies exceeding 25 %
Rittmann, Clara; Dalke, Jonas; Richter, Armin; Steinhauser, Bernd; Drießen, Marion; Weiss, Charlotte; Schindler, Florian; Schubert, Martin; Janz, Stefan; Niewelt, Tim; Stolzenburg, Hannah
Vortrag
Presentation
2022 Spectrometric Determination of Current Matching in Perovskite/Silicon Tandem Solar Cells
Bett, Alexander J.; Chojniak, David; Schachtner, Michael; Reichmuth, Kasimir; Schulze, Patricia; Kabakli, Özde Seyma; Schindler, Florian; Heydarian, Maryamsadat; King, Hunter; Sittinger, Volker; Goldschmidt, Jan Christoph; Hohl-Ebinger, Jochen; Siefer, Gerald; Bett, Andreas W.; Schubert, Martin
Vortrag
Presentation
2022 Monolithic 2-Terminal Perovskite Silicon Tandem Solar Cells
Schulze, Patricia; Kabakli, Özde Seyma; Bivour, Martin; Heydarian, Minasadat; Er-Raji, Oussama; Heydarian, Maryamsadat; Efinger, Raphael; Schultz-Wittmann, Oliver; Meßmer, Christoph Alexander; Bett, Alexander J.; Fischer, Oliver; Tutsch, Leonard; Erath, Denis; Pingel, Sebastian; Hatt, Thibaud; Schubert, Martin; Goldschmidt, Jan Christoph; Hermle, Martin; Glunz, Stefan
Vortrag
Presentation
2022 Efficient Charge Carrier Extraction in Perovskite-Silicon Tandem Solar Cells Investigated by Numerical Simulation
Meßmer, Christoph Alexander; Schön, Jonas; Würfel, Uli; Schulze, Patricia; Schubert, Martin; Bivour, Martin; Glunz, Stefan; Hermle, Martin
Konferenzbeitrag
Conference Paper
2021 Monolithic 2-terminal perovskite silicon tandem solar cells
Schulze, Patricia; Kabakli, Özde Seyma; Bett, Alexander J.; Bivour, Martin; Efinger, Raphael; Fett, Bastian; Hähnel, Angelika; Hagendorf, Christian; Herbig, Bettina; Heydarian, Maryamsadat; Heydarian, Minasadat; King, Hunter; Lange, Stefan; Luderer, Christoph; Meßmer, Christoph Alexander; Naumann, Volker; Penn, Michaela; Romero Sierra, Camila A.; Schubert, Martin; Sittinger, Volker; Tutsch, Leonard; Hermle, Martin; Glunz, Stefan W.; Bett, Andreas W.; Goldschmidt, Jan Christoph
Konferenzbeitrag
Conference Paper
2014 Verfahren und Vorrichtung zur Bestimmung von Materialparametern, insbesondere der Ladungsträgerlebensdauer eines Halbleitersubstrates durch Messung von Lumineszenzstrahlung
Giesecke, Johannes; Schubert, Martin; Warta, Wilhelm
Patent
2008 Messverfahren für eine Halbleiterstruktur
Würfel, P.; Schubert, Martin; Kasemann, M.; Warta, Wilhelm
Patent
2008 Detektion von infraroter Strahlung zur Beurteilung der Materialqualität von Solar-Silizium
Schubert, Martin
Dissertation
Doctoral Thesis
2006 Verfahren und Vorrichtung zur Inaktivierung von Trapping-Effekten in dotierten Halbleitern
Schubert, Martin; Rein, Stefan; Isenberg, J.; Warta, Wilhelm; Glunz, Stefan
Patent
Diese Liste ist ein Auszug aus der Publikationsplattform Fraunhofer-Publica

This list has been generated from the publication platform Fraunhofer-Publica