Patent ID: 8993882
Filing Date: 2015-03-31
Classification: C23C,H01L,Y02E,Y02P

Abstract:
1. A method of making a selenium-containing photoabsorbing composition, comprising the steps of: (a) sputtering at least one target in the presence of one or more chalcogens comprising Se to form a Se-containing precursor of the chalcogen-containing photoabsorber wherein the Se-containing precursor includes a sub-stoichiometric amount of the one or more chalcogens comprising Se throughout the precursor or in selected areas of the precursor; and (b) while the precursor comprises Se throughout the precursor or in the selected areas of the precursor, subjecting the Se-containing precursor to a thermal treatment in the presence of one or more chalcogens comprising Se that selenizes the precursor to form the selenium-containing photoabsorbing composition.