Patent ID: 9273389
Filing Date: 2016-03-01
CPC Classification: C23C,H01J

Claim Text:
1. A Cu—In—Ga—Se quaternary alloy sputtering target consisting of copper, indium, gallium and selenium, wherein the Cu—In—Ga—Se quaternary alloy has a composition expressed by a formula of Cu x In 1-y Ga y Se a , where x, y and a satisfy 0.84≦x≦0.98, 0<y≦0.5, and a=(1/2)x+3/2 respectively, and a sintered structure which, in observation by EPMA, is configured only from a Cu(In, Ga)Se 2 phase without any heterogeneous phase of Cu 2 Se or Cu(In, Ga) 3 Se 5 .