Curriculum vitae

  • Study of Electrical Engineering, University of Stuttgart, Germany
  • Scientist, Institute for Physical Electronics, University of Stuttgart
  • Postdoctoral fellow at the Institute of Energy Conversion, University of Delaware
  • Scientist, Helmholtz-Zentrum Berlin (formerly Hahn-Meitner-Institute)


Compound semiconductor thin-film solar cells


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Latest Publications


  • Wang, L.; Lin, X.; Ennaoui, A.; Wolf, C.; Lux-Steiner, M.; Klenk, R.: Solution-processed In2S3 buffer layer for chalcopyrite thin film solar cells. EPJ Photovoltaics 7 (2016), p. 70303/1-5


  • Harndt, S.; Kaufmann, C.A.; Lux-Steiner, M.C.; Klenk, R.; Nürnberg, R.: Grain boundary assisted photocurrent collection in thin film solar cells. EPJ Photovoltaics 6 (2015), p. 60101-60105

  • Heinemann, M.D.; Efimova, V.; Klenk, R.; Hoepfner, B.; Wollgarten, M.; Unold, T.; Schock, H.-W.; Kaufmann, C.: Cu(In,Ga)Se2 Superstrate Solar Cells: Prospects and Limitations. Progress in Photovoltaics 23 (2015), p. 1228–1237

  • Heinemann, M.D.; Greiner, D.; Unold, T.; Klenk, R.; Schock, H.-W.; Schlatmann, R.; Kaufmann, C.A.: The Importance of Sodium Control in CIGSe Superstrate Solar Cells. IEEE Journal of Photovoltaics 5 (2015), p. 378-581

  • Kaigawa, R.; Hashimoto, S.; Irago, T.; Klenk, R.: Direct preparation of Cu2ZnSnSe4 films by microwave irradiation and its dependence on the Sn/(Sn + Zn) ratio. Japanese Journal of Applied Physics 54 (2015), p. 08KC02/1-4

  • Kaigawa, R.; Nakano, S.; Gerhardt, P.; Klenk, R.: Wide-band-gap Cu(In,Ga)S2 solar cells with the junction prepared on the rear surface of the three-stage Cu-deficient absorber films. Japanese Journal of Applied Physics 54 (2015), p. 08KC11/1-5

  • Mainz, R.; Weber, A.; Rodriguez-Alvarez, H.; Levcenko, S.; Klaus, M.; Pistor, P.; Klenk, R.; Schock, H.-W.: Time-resolved investigation of Cu(In,Ga)Se2 growth and Ga gradient formation during fast selenization of metallic precursors. Progress in Photovoltaics 23 (2015), p. 1131–1143

  • Merdes, S.; Steigert, A.; Ziem, F.; Lauermann, I.; Klenk, R.; Hergert, F.; Kaufmann, C.A.; Schlatmann, R.: Influence of Cu(In,Ga)(Se,S)2 surface treatments on the properties of 30 x 30 cm2 large area modules with atomic layer deposited Zn(O,S) buffers. Thin Solid Films 574 (2015), p. 28-31

  • Schmidt, J.; Brendel, R.; Bett, A.; Dyakonov, V.; Brabec, C.; Klenk, R.; Stannowski, B.; Amkreutz, D.; Rau, U.; Kirchartz, T.; Wischmann, W.; Ahlswede, E.: Forschung und Entwicklung für die Photovoltaik zwischen Evolution und Revolution. In: ForschungsVerbund Erneuerbare Energien (FVEE) [Ed.] : Forschung für die Energiewende - Phasenübergänge aktiv gestalten. FVEE, 2015, p. 64-69

  • Steigert, A.; Lauermann, I.; Niesen, T.; Dalibor, T.; Palm, J.; Körner, S.; Scherg-Kurmes, H.; Muydinov, R.; Szyszka, B.; Klenk, R.: Sputtered Zn(O,S)/In2O3:H window layers for enhanced blue response of chalcopyrite solar cells. Physica Status Solidi - Rapid Research Letters 9 (2015), p. 627-360

  • Yin, G.; Steigert, A.; Manley, P.; Klenk, R.; Schmid, M.: Enhanced absorption in tandem solar cells by applying hydrogenated In2O3 as electrode. Applied Physics Letters 107 (2015), p. 211901/1-5