Towards a high efficiency amorphous silicon solar cell using molybdenum oxide as a window layer instead of conventional p-type amorphous silicon carbide

Abstract

A thermally evaporated molybdenum oxide (MoO(3)) film was used as a window layer of a hydrogenated amorphous silicon (a-Si: H) solar cell instead of the conventional p-type hydrogenated amorphous silicon carbide (p-a-SiC:H) film. The short circuit current density (J(SC)) and fill factor were increased due to the wide optical band gap and high conductivity of the MoO(3) film. As a result, the conversion efficiency of the fabricated MoO(3) solar cell was increased to 6.21% compared to the typical a-Si: H solar cell (5.97%). (C) 2011 American Institute of Physics. [doi: 10.1063/1.3624591]