TY - CONF T1 - Heterojunctions based on Cu2ZnSnS4 and Cu2ZnSnSe4 thin films T2 - 14th European PVSEC Y1 - 1997 A1 - Friedlmeier, Th Magorian A1 - Wieser, N A1 - Walter, Th A1 - Dittrich, H A1 - Schock, HW JA - 14th European PVSEC KW - friedlmeier1997heterojunctions ER -