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The applicability of molybdenum, tungsten and vanadium oxide as a hole contact for silicon wafer based solar cells is explored. The Si heterojunctions for which these materials are in direct contact with the c-Si absorber, featuring an additional a-Si:H passivation layer or where these materials are used as an additional contact layer in-between the TCO / a-Si:H(p) Schottky contact are addressed....
The high work function metal oxides, tungsten oxide (WOx) and molybdenum oxide (MoOx), were investigated regarding their ability to form a hole-selective contact for a crystalline silicon absorber. We show that in principle both materials have the potential to (i) either replace the p-type amorphous silicon thin films typically used as the high work function contact material in silicon based heterojunction...
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