%0 Journal Article %J Applied Physics Letters %D 2009 %T Crystal and electronic band structure of Cu2ZnSnX4 (X= S and Se) photovoltaic absorbers: first-principles insights %A Chen, Shiyou %A Gong, XG %A Walsh, Aron %A Wei, Su-Huai %B Applied Physics Letters %V 94 %P 41903 %G eng