High photocurrent polycrystalline thin-film CdS/CuInSe2 solar cella

Abstract

A polycrystalline thin-film Cds/CuInSe2 heterojunction solar cell with an efficiency of 5.7% has been prepared using a simultaneous elemental evaporation technique to deposit the CuInSe2 film. The cell–s short(-circuit current of 31 mA/cm2 under 100 mW/cm2 is the highest ever reported for a 1-cm2 cell. Heat treatments have been found to improve cell efficiency and to also change the cell I-V and C-V characteristics.