The State-of-the Art of Solar Photovoltaics and its Future Direction

Abstract

The successful history of solar photovoltaic technology in Japan is reviewed quickly and then present photovoltaic implementations in Japan, US and Europe are summarized in short. Japan set up “PV2030 roadmap” in 2004, targeting 25% PV cell efficiency and 100GW installation over Japan. “Cool Earth PV2050”has been being discussed to make innovative technologies clearly contribute to the post-Kyoto mechanism. Finally, the author is directing future solar photovoltaic technology capabilities towards one of possible major energy approach for 21^st century.