Patent ID: 6180870
Filing Date: 2001-01-30
Classification: H01L,Y02E,Y02P

Abstract:
A photovoltaic device comprising a plurality of pin structures, a transparent electrode on a light-incident side of the plurality of pin structures and a back electrode on the side opposite to the light-incident side of the plurality of pin structures wherein;the pin structures comprise a first pin structure, a second pin structure and a third pin structure in the order from the light-incident side, each having a p-type semiconductor layer and an i-type semiconductor layer, the i-type semiconductor layer of the first pin structure comprises amorphous silicon, the i-type semiconductor layers of the second pin structure comprises microcrystalline silicon and the i-type semiconductor layer of the third pin structure comprises amorphous silicon germanium and the p-type semiconductor layer and the n-type semiconductor layer in each said pin structure comprises a compound selected from the group consisting of a-Si:H, a-Si:HX, a-SiC:H, a-SiC:HX, a-SiGe:H, a-SiGeC:H, a-SiO:H, a-SiN:H, a-SiON:HX, a-SiOCN:HX, .mu.c-Si:H, .mu.c-SiC:H, .mu.c-Si:HX, .mu.c-SIC:HX, .mu.c-SiGe:H, .mu.c-SiO:H, .mu.C-SiGeC:H, .mu.c-SiN:H, .mu.c-SiON:HX, .mu.c-SiOCN:HX, poly-Si:H, poly-SiHX, poly-SiC:H, poly-SiC:HX, poly-SiGe:H, poly-Si, poly-SiC and poly-SiGe.