Patent ID: 8665363

Claim:
A solid-state image device comprising: a silicon substrate; and a photoelectric conversion layer directly on the silicon substrate and lattice-matched to the silicon substrate, wherein, the photoelectric conversion layer comprises a first photoelectric conversion layer, a second photoelectric conversion layer, and a third photo electric conversion layer, the first photoelectric conversion layer comprises CuAl x Ga y In z S 2 , wherein 0≦x≦0.12, 0.38≦y≦0.52, 0.48≦z≦0.50 and x+y+z=1, the second photoelectric conversion layer comprises CuAl x Ga y In z S 2 , wherein 0.06≦x≦0.41, 0.01≦y≦0.45, 0.49≦z≦0.58 and x+y+z=1, and the third photoelectric conversion layer comprises CuAl x Ga y S u Se v , wherein 0.31≦x≦0.52, 0.48≦y≦0.69, 1.33≦u≦1.38, 0.62≦v≦0.67, and either x+y+u+v=3 or x+y=1 and u+v=2.