Patent ID: 8124867
Filing Date: 2012-02-28
Classification: H01L,Y02E,Y02P

Abstract:
1. A stacked photovoltaic device, having a light incidence surface, comprising: a plurality of photovoltaic cells stacked and each including a photoelectric conversion layer composed of a substantially intrinsic semiconductor; wherein the photoelectric conversion layer in the one photovoltaic cell closest to the light incidence surface includes an amorphous semiconductor and the photoelectric conversion layer in another photovoltaic cell includes a non-single crystalline semiconductor containing crystal grains; wherein the concentration of impurities contained in the photoelectric conversion layer in said another photovoltaic cell is higher than the concentration of impurities contained in the photoelectric conversion layer in said one photovoltaic cell; and wherein said impurities include carbon, the concentration of carbon contained in the photoelectric conversion layer in said another photovoltaic cell being higher than the concentration of carbon contained in the photoelectric conversion layer in said one photovoltaic cell.