IEEE Stamm @EPFL : Photovoltaics


The IEEE EPFL Student Branch in collaboration with the IEEE Life Member Activity Group, kindly invites you to participate to the online May Stamm dedicated to Photovoltaics.

We are honored to have three highly knowledgeable speakers, to present different aspects of this technology so important for the energy supply of our planet.

No registration required.


  Date and Time




  • Date: 31 May 2021
  • Time: 06:00 PM to 07:30 PM
  • All times are (UTC+01:00) Bern
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Zoom -
(Meeting ID: 651 3428 4958 / Passcode: 393656)

  • Co-sponsored by Hugo Wyss - IEEE LMAG Switzerland


18:00 – 18:05     Opening remarks – Michel Bron

18:05 – 18:30     Introduction, Evolution, Simulation of Solar plants – Michel Villoz

18:30 – 19:00     New photovoltaic technologies; efficiency and reduction of « grey » energy;
“Transformative” photovoltaic for solar architecture – Prof. Christophe Ballif

19:00 – 19:15     «Status of Photovoltaics», based on the Book: Solar Cells and Modules
By the editor, Prof. Arvind Shah

19:15 – 19:25     Questions and answers

19:25 – 19:30     Closing remarks – Hugo Wyss


Michel Villoz graduated in 1977 from EPFL (Ecole Polytechnique Fédérale de Lausanne) with a diploma in electrical engineering. In 1980, he joined the world of solar energy to coordinate the technology transfer to Switzerland of a solar cells production line from Solarex (USA). He then managed the production of cells and participated to the design of the Pasan sun simulators. Today, he works mainly as an independent consultant and expert in photovoltaic engineering. Furthermore, he provides in-house PV training at PVsyst and on-demand specialized training in PV technology abroad. Michel is the author (with Anne Labouret) of « Solar Photovoltaics » published by the IET, Stevenage, UK, and of « Construire Ecolo » published by Dunod in Paris.

Professor Christophe Ballif is director of the Phototovoltaics and Thin Film Electronics Laboratory (PV-Lab) at the institute of microengineering (IMT) in Neuchâtel (part of the EPFL since 2009). Christophe Ballif graduated as a physicist from the EPFL in 1994, where he also obtained in 1998 his Phd degree working on novel PV materials. He accomplished his postdoctoral research at NREL (Golden, US) on compound semiconductor solar cells (CIGS and CdTe). He worked then at the Fraunhofer ISE (Ge) on crystalline silicon photovoltaics (monocrystalline and multi-crystalline) until 2003 and then at the EMPA in Thun (CH) before becoming full professor at the University of Neuchâtel IMT in 2004, taking over the chair of Prof. A. Shah. Since 2013, C. Ballif is also the director of the new CSEM PV-Center, also located in Neuchâtel. He (co-) authored over 500 journal and technical papers, as well as several patents. He is an elected member of the SATW, member of the scientific council of the Swiss AEE, and member of the board of the EPFL Energy center. In 2016, he received the Becquerel prize for his contributions to the field of high efficiency photovoltaics.

Professor Arvind V. Shah studied in Bombay, London, and Zurich, receiving his Ph.D. in applied physics in 1968 from the Swiss Federal Institute of Technology in Zurich (ETH). He worked at the ETH until founding the Centre for Electronics Design and Technology (CEDT) at the Indian Institute of Science, Bangalore, India, in 1975. In March 1979, he was appointed professor of electronics at the University of Neuchâtel, and in 1988 began a concurrent, part-time appointment at the Swiss Federal Institute of Technology in Lausanne (EPFL). He is founder of Thin-film and Photovoltaics Laboratory at IMT Neuchâtel where he was involved with the invention of VHF plasma deposition and the pioneering work with microcrystalline silicon and “micromorph” tandem solar cells. Since 2000, he has been involved in the successful industrial transfer of technology, negotiating major licensing agreements both to start-up and established companies. In 2007, he received the Becquerel prize for his ground-breaking work on Silicon thin film solar cells.