PHOTOELECTROCHEMISTRY OF ELECTRODEPOSITED POLYCRYSTALLINE CUINSE2 THIN-FILMS .1. ELECTRODEPOSITION OF CUINSE2 FILMS

Electrodeposition of CuInSe2 was investigated in acidic solutions containing Cu2+, In3+ and HSeO2+ ions. The electrodeposition condition was optimized with the aim of obtaining uniform thin films on titanium substrate. The mechanism of the electrodeposition process is discussed. Structure analysis of the deposited film shows a typical polycrystalline chalcopyrite structure, good crystallinity and homogeneous dispersion. The photoelectrochemical cells made of these kinds of deposited films in polysulfide redox solution give distinct photoresponse.