JA Solar Multi-Si Solar Cells Achieve 20% Conversion Efficiency

JA Solar Holdings Co., Ltd. (Nasdaq:JASO) ("JA Solar" or the "Company"), one of the world's largest manufacturers of high-performance solar power products, today announced that it achieved 20% solar energy conversion efficiency in its multi-crystalline silicon ("multi-Si") solar cell.  By using advanced proprietary light trapping and surface passivation technologies, the JA Solar research team attained this absolute 1% increase in conversion efficiency only nine months after announcing the realization of 19% efficiency in its multi-Si cells. Mr. Yong Liu, Chief…