New Efficiency Record for Photovoltaic Cells, Thanks to Heterojunction

ScienceDaily (Sep. 27, 2012) — In the medium term, an investment of only $2500 in photovoltaic cells would suffice to provide more than enough electricity for the consumption of a four people household. This promising scenario has been made possible by the innovations accomplished by EPFL's Institute of Microengineering in Neuchatel. The team of prof. Christophe Ballif, director of the Photovoltaics Laboratory (PVlab), presented their work at the European Photovoltaic Solar Energy Conference and Exhibition that just took place in Frankfurt.

http://www.sciencedaily.com/releases/2012/09/120927130221.htm