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More about Sascha Sadewasser

Sascha Sadewasser

Staff Researcher


Sascha Sadewasser holds a Dipoma (1995) in Physics from the RWTH Aachen, Germany and a PhD (1999) from the Washington University St. Louis, MO, USA. For both degrees he worked on high temperature superconductors. As a post doctoral researcher he stayed for 4 years (1999-2003) at the Hahn-Meitner Institute Berlin, where he worked on the nanoscale characterization of semiconductor materials for thin film solar cells using scanning probe microscopy methods. As a Ramón y Cajal scientist he joined the Centro Nacional de Microelectonica in Barcelona, Spain from 2003 to 2004, where he worked on the fabrication of nano- and micro-electromechanical systems (NEMS and MEMS). From 2005 until 2011 he was the group leader of the Nanoanalytics and Nanofabrication group at the Helmholtz-Zentrum Berlin, Germany and the deputy head (2008-2011) of the Department for Heterogeneous Materialsystems, working with scanning probe microscopy and on the nanostructured materials growth of Cu(In,Ga)Se2 semiconductors for solar cell applications. In 2011 he obtained his Habilitation in Experimental Physics from the Free University of Berlin, Germany.
In July 2011 he started as the group leader of the Laboratory for Nanostructured Solar Cells (LaNaSc) at the INL - International Iberian Nanotechnology Laboratory, where his research will be focused on the development of chalcopyrite-type quantum dots for solar cells and their characterization using scanning probe microscopy.

Selected recent publications:
• “Kelvin Probe Force Microscopy: Measuring and Compensating Electrostatic Forces”
S. Sadewasser, Th. Glatzel
Book in Springer Series on Surface Science, Springer Verlag, Heidelberg, (2011).

• “Tetrahedral chalcopyrite quantum dots for solar-cell applications“
J. Ojajärvi, E. Räsänen, S. Sadewasser, S. Lehmann, Ph. Wagner, and M.Ch. Lux-Steiner
Appl. Phys. Lett. 99, 111907 (2011).

• “Direct evidence for a reduced density of deep level defects at grain boundaries of Cu(In,Ga)Se2 thin films”
H. Mönig, Y. Smith, R. Caballero, C.A. Kaufmann, I. Lauermann, M.Ch. Lux-Steiner, and S. Sadewasser
Phys. Rev. Lett. 105, 116802 (2010).

• “Large neutral barrier at grain boundaries in chalcopyrite thin films”
M. Hafemeister, S. Siebentritt, J. Albert, M.Ch. Lux-Steiner, and S. Sadewasser
Phys. Rev. Lett. 104, 196602 (2010).

• “New insights on atomic-resolution Frequency-Modulation Kelvin Probe Force Microscopy imaging on semiconductors“
S. Sadewasser, P. Jelinek, Ch.-K. Fang, O. Custance, Y. Yamada, Y. Sugimoto, M. Abe, and S. Morita
Phys. Rev. Lett. 103, 266103 (2009).

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