1 1.10.2004 Institute of Microengineering IMT,( EPFL, University of Neuchâtel until 1.1.2009). Full professor, Director of the PV-Lab.
5.2003 - 9. 2004 Swiss Federal Institute for Material Research (EMPA), Thun. Head of the nanofactory lab.
2000 -4.2003 Fraunhofer Institute for Solar Energy Systems (ISE), Industry Laboratory, Gelsenkirchen, Germany. 3. 2001 Weizmann Institute, Rehovot, Israel. Invited scientist.
1999 - 2000 National Renewable Energy laboratory (NREL), Golden, CO, USA. Postdoc.
1994-1998 Ecole Polytechnique Fédérale de Lausanne (EPFL). Research assistant and thesis.(Prof. F. Lévy, supervisor).
The focus of the lab is the developpement of new prrocesses and device structures for photovoltaics, ranging from material aspects to full demonstrators. Key points are the the realisation of high efficiency thin film silicon solar cells (based on a-Si and microcrystalline Si) on glass and plastic substrate as well as the physical properties and manufacturing of high efficiency heterojunction crystalline Si solar cells(a-Si/c-Si). A special focus is set on the development of transparent conductive oxydes (TCO) and advanced light trapping structures for thin film Si solar cell and on plasma processes for cell fabrication, including new plasma diagnostic tools and high deposition rate approaches. Encapsulation processes and reliability of PV-Modules, with emphasis on durability of thin film Si modules are also investigated, based on the full infrastructure at the PV-Lab. Finally, thin film electronic devices processing (e.g. TFT) and specialized detectors (e.g. X-Rays) are also considered.