Modules and flexible cells of CuInSe/sub 2/

CuInSe/sub 2/ (CIS) films were grown on glass and metallic foil substrates by the selenization method. Both E-beam evaporation and sputtering techniques were utilized for the preparation of Cu-In precursors and the properties of these layers were studied. Modules with 816 cm/sup 2/ aperture area yielded efficiencies of about 5% and a power output of 4 W. Smaller modules with efficiencies as high as 7.4% were also demonstrated. An efficiency of 9% was obtained for small area solar cells fabricated on flexible metallic foils.