Patent ID: 8586457
Filing Date: 2013-11-19
Classification: H01L,Y02E

Abstract:
1. A method for forming a semiconductor material on a substrate comprising: forming a metal precursor film, wherein forming the metal precursor film in a sequential order comprises: i. forming a first layer above a surface of the substrate, wherein the first layer comprises In; ii. forming a second layer above the first layer, wherein the second layer comprises Cu; iii. forming a third layer above the second layer, wherein the third layer comprises Cu, and Ga, wherein the third layer is formed using a sputtering process, wherein the sputtering process uses a sputtering target comprising between about 25 atomic % Ga and about 66 atomic % Ga; and heating the metal precursor film in the presence of a chalcogen at a temperature between 100 C and 700 C.