Princeton University

School of Engineering & Applied Science

The amazing recent years in Solar Cells; What’s next?

Professor David Cahen, Weizmann Institute of Science, Rehovot, Israel
Engineering Quadrangle, B205
Wednesday, September 3, 2014 - 2:00pm

The remarkable advances over the past few years in performance of photovoltaic cells, including the advent of new absorber materials, allow us to take stock of how well we understand PV and if we can at all predict future progress. Apart from Si and InP, for all cell types the “best efficiencies” improved, while crystalline Si modules showed major cost reduction.  New cell types, such as "sustainable CIGS-like", “perovskite” and quantum dot ones, appeared on the scene. Developments tested and nearly reached the Shockley-Queisser limit.  The order --> increased efficiency criterion gained credibility from results on organic and esp. perovskite cells. On top of this we seem to be finding new (or re-new-ed) science.