Electrodeposited CuInSe/sub 2/ thin film devices

Abstract

The authors have been investigating the electrochemical deposition of thin films and junctions based on copper indium diselenide (CIS). CIS is considered to be one of the best absorber materials for use in polycrystalline thin film photovoltaic solar cells. Electrodeposition is a simple and inexpensive method for producing thin-film CIS. They have produced both p and n type CIS thin films, as well as a CIS p-n junction electrodeposited from a single aqueous solution. Optical bandgaps were determined for these thin films using transmission spectroscopy. Current versus voltage characteristics were measured for Schottky barriers on the individual films and for the p-n junction.