Patent ID: 9306107
Filing Date: 2016-04-05
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A photovoltaic device, comprising: a transparent electrode formed on a transparent substrate; a buffer layer formed on the transparent electrode, the buffer layer being formed from a non-crystalline doped hydrogenated silicon layer having a work function ranging from 4.7 eV to 5.6 eV; a p-type layer of silicon containing material formed on the buffer layer such that the work function of the buffer layer falls substantially in the middle +/−10% of a barrier formed between the transparent electrode and the p-type layer, wherein the p-type layer of silicon containing material has a composition selected from the group consisting of amorphous SiC, microcrystalline SiC:H, microcrystalline Si:H and combinations thereof; and an intrinsic layer formed on the p-type layer; an n-type layer formed on the intrinsic layer; and a back electrode formed on the n-type layer, wherein light degradation of the photovoltaic device is limited to less than 8.8% within a light soak up to approximately 90 hours, wherein the plasma power for depositing at least one of the buffer layer and the p-type layer of silicon containing material by plasma enhanced chemical vapor deposition does not exceed 50 W.