Patent ID: 8704326
Filing Date: 2014-04-22
Classification: H01L,Y02E,Y02P

Abstract:
1. A thin-film photoelectric conversion device, comprising: a first electrode layer; one or more photoelectric conversion units; and a second electrode layer, arranged in this order on a substrate, each photoelectric conversion unit comprising a photoelectric conversion layer sandwiched between a p-type semiconductor layer and an n-type semiconductor layer, wherein at least one photoelectric conversion unit is a crystalline germanium photoelectric conversion unit including a crystalline germanium photoelectric conversion layer, the crystalline germanium photoelectric conversion layer is a substantially intrinsic or a weak n-type layer consisting of a crystalline germanium semiconductor layer essentially free of silicon atoms, a first interface layer comprising a substantially intrinsic amorphous silicon semiconductor layer is arranged between the p-type semiconductor layer and the crystalline germanium photoelectric conversion layer in the crystalline photoelectric conversion unit, and the first interface layer has a thickness in the range of 1 nm or more and 20 nm or less.