Patent ID: 7923625
Filing Date: 2011-04-12
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, said plurality of photovoltaic cells including a first photovoltaic cell closest to the light incidence surface and at least a second photovoltaic cell, the photoelectric conversion layer in the first photovoltaic cell closest to the light incidence surface including an amorphous semiconductor, and the photoelectric conversion layer in said second photovoltaic cell including a non-single crystalline semiconductor containing crystal grains, and the concentration of impurities contained in the photoelectric conversion layer in said second photovoltaic cell being higher than the concentration of impurities contained in the photoelectric conversion layer in said first photovoltaic cell.