Dr. Martin C. Schubert

Head of Department Characterization and Simulation, Division Solar Cells - Development and Characterization

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)
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)


External publication list on Google Scholar

Publication list from the Fraunhofer-Publica database:

Publication Type
2022 Carrier Lifetime Limitation of Industrial Ga-Doped Cz-Grown Silicon after Different Solar Cell Process Flows
Post, R.; Niewelt, T.; Kwapil, W.; Schubert, M.
2021 The Potential of Cast Silicon
Schubert, M.; Schindler, F.; Benick, J.; Riepe, S.; Krenckel, P.; Richter, A.; Müller, R.; Hammann, B.; Nold, S.
2021 Extraordinarily High Minority Charge Carrier Lifetime Observed in Crystalline Silicon
Steinhauser, B.; Niewelt, T.; Richter, A.; Eberle, R.; Schubert, M.
2019 Analysis of Temperature Dependent Characteristics of Diffused Regions in Silicon Solar Cells
Eberle, R.; Fell, A.; Richter, A.; Niewelt, T.; Schindler, F.; Schubert, M.
2018 Limiting Effects in Crystalline Silicon for High-Efficiency Solar Cells
Niewelt, T.; Richter, A.; Eberle, R.; Post, R.; Schön, J.; Schindler, F.; Hermle, M.; Kwapil, W.; Schubert, M.
2018 Approach for a Holistic Optimization from Wafer to PV System
Mittag, M.; Reise, C.; Wöhrle, N.; Eberle, R.; Schubert, M.; Heinrich, M.
2017 How to assess the electrical quality of silicon material
Michl, B.; Schindler, F.; Schubert, M.
2017 Enabling stress determination on alkaline textured silicon using Raman sprectroscopy
Büchler, A.; Beinert, A.; Kluska, S.; Haueisen, V.; Romer, P.; Heinz, F.D.; Glatthaar, M.; Schubert, M.
2016 Benefits and Disadvantages of p- and n-type Doping for Multicrystalline Silicon
Schubert, M.
2016 N-type multicrystalline silion for high efficiency solar cells
Riepe, S.; Krenckel, P.; Schindler, F.; Schubert, M.; Benick, J.
2016 Monolithic perovskite silicon tandem solar cells with advanced optics
Goldschmidt, J.C.; Bett, A.J.; Bivour, M.; Bläsi, B.; Eisenlohr, J.; Kohlstädt, M.; Lee, S.; Mastroianni, S.; Mundt, L.; Mundus, M.; Ndione, P.; Reichel, C.; Schubert, M.; Schulze, P.S.C.; Tucher, N.; Veit, C.; Veurman, W.; Wienands, K.; Winkler, K.; Würfel, U.; Glunz, S.W.; Hermle, M.
2014 Identifying the impact of surface recombination at electrodes in organic solar cells by means of electroluminescence and modeling
Reinhardt, J.; Grein, M.; Bühler, C.; Schubert, M.; Würfel, U.
2014 Verfahren und Vorrichtung zur Bestimmung von Materialparametern, insbesondere der Ladungsträgerlebensdauer eines Halbleitersubstrates durch Messung von Lumineszenzstrahlung
Giesecke, Johannes; Schubert, Martin; Warta, Wilhelm
2014 Impact of iron precipitates on carrier lifetime in as-grown and phosphorus-gettered multicrystalline silicon wafers in model and experiment
Kwapil, W.; Schön, J.; Schindler, F.; Warta, W.; Schubert, M.
2014 Fast hot spot evaluation
Geisemeyer, I.; Fertig, F.; Warta, W.; Rein, S.; Schubert, M.
2014 Solar cell efficiency losses due to impurities from the crucible in multicrystalline silicon
Schindler, F.; Michl, B.; Schön, J.; Kwapil, W.; Warta, W.; Schubert, M.
2013 Impact on iron surface contamination on the lifetime degradation of samples passivated by fired AL2O3/SiNx
Breitenstein, L.; Schön, J.; Schubert, M.; Warta, W.
2013 Excellent average diffusion lenghts of 600 µm of n-Type multicrystalline silicon wafers after the full solar cell process including boron diffusion
Michl, B.; Benick, J.; Richter, A.; Bivour, M.; Yong, J.; Steeman, R.; Schubert, M.; Glunz, S.W.
2013 Analyses of the evolution of iron-silicide precipitates in multicrystalline silicon during solar cell processing
Schön, J.; Haarahiltunen, A.; Savin, H.; Fenning, D.P.; Buonassisi, T.; Warta, W.; Schubert, M.
2013 Accurate determination of minority carrier mobility in silicon from quasi-steady-state photoluminescence
Giesecke, J.; Schindler, F.; Bühler, M.; Schubert, M.; Warta, W.
2012 Broad Range Injection-Dependent Minority Carrier Lifetime from Photoluminescence
Giesecke, J.; Niewelt, T.; Rüdiger, M.; Rauer, M.; Schubert, M.; Warta, W.
2011 Impact of Junction Breakdown in Multi-Crystalline Silicon Solar Cells on Hot Spot Formation and Module Performance
Fertig, F.; Rein, S.; Schubert, M.; Warta, W.
2008 Analysis of the physical origin of trap centres and their effect on solar cells
Gundel, P.; Schubert, M.; Allardt, M.; Warta, W.
2008 Messverfahren für eine Halbleiterstruktur
Würfel, P.; Schubert, M.; Kasemann, M.; Warta, W.
2007 Quantitative carrier lifetime images optically measured on rough silicon wafers
Schubert, M.; Pingel, S.; The, M.; Warta, W.
2007 Lifetime studies on laser drilled vias for application in emitter-wrap-through-solar cells
Mingirulli, N.; Grohe, A.; Dohrn, A.; Hofmann, M.; Schubert, M.; Roth, T.; Biro, D.; Preu, R.
2007 Investigations of diffusion barriers for application in back-contacted solar cells
Drießen, M.; Mingirulli, N.; Pingel, S.; Schubert, M.; Biro, D.; Preu, R.
2007 Low cost using ultra-thin bifacial cells
Jimeno, J.C.; Bueno, G.; Lago, R.; Freire, I.; Perez, L.; Recart, F.; Hoces, I.; Azkona, N.; Alonso, J.; Sanchez-Friera, P.; Glunz, S.W.; Emanuel, G.; Ruiz, R.; Pohl, A.; Wolke, W.; Schubert, M.; Gavilanes, I.; Ezker, M.; Zugasti, E.; Turumbay, A.; Sato, H.; Bragagnolo, J.; Nasch, P.M.; Ostapenko, S.; Belyaev, A.; Dallas, W.; Polupan, O.; Albertsen, K.; Shaikh, A.; Kerp, H.; Salami, J.
2006 Verfahren und Vorrichtung zur Inaktivierung von Trapping-Effekten in dotierten Halbleitern
Schubert, M.; Rein, S.; Isenberg, J.; Warta, W.; Glunz, S.W.
Diese Liste ist ein Auszug aus der Publikationsplattform Fraunhofer-Publica

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