Alan Heeger http://www.cleantech.com/news/people/alan-heeger The taxonomy view with a depth of 0. en Organic solar cell efficiency breakthrough http://www.cleantech.com/news/1465/organic-solar-cell-efficiency-breakthr South Korean researchers say they've broken the 5 percent organic PV cell efficiency barrier. http://www.cleantech.com/news/1465/organic-solar-cell-efficiency-breakthr#comments Alan Heeger Lee Kwang-Hee Solar Fri, 13 Jul 2007 11:33:49 -0400 Dallas Kachan 1465 at http://www.cleantech.com/news