Patent ID: 6566162
Filing Date: 2003-05-20
Classification: H01L,Y02E,Y02P,Y10S

Abstract:
A method of producing a semiconductor film of Cu(MIII)(MVI)2 wherein MIII represents In1-xGax where x is between 0 and 1 and MVI represents SeyS1-y where y is between 0.5 and 1, comprising the steps of:(a) depositing on a substrate a precursor Cu(MIII)(MVI)2 film having a molar ratio of Cu:MIII of less than 1.0:1.0 but not less than 1.0:1.4 and (b) annealing said precursor film at a temperature of 400-500Â° C. in an oxygen-containing atmosphere to form a buffer layer of indium oxide and/or gallium oxide and a Cu(In1-xGax)(SeyS1-y)2 film interposed between said substrate and said buffer layer.