Reducing series resistance in Cu2ZnSn(S,Se)4 nanoparticle ink solar cells on flexible molybdenum foil substrates

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Abstract

Earth abundant Cu2ZnSnS4 nanoparticle inks were depostied on molybdenum foil substrates and subsequently converted to high quality thin film Cu2ZnSn(S,Se)4 photovoltaic absorbers. Integration of these absorbers within a thin film solar cell device structure yields a solar energy conversion efficiency which is comparable to identical devices processed on rigid glass substrates. Importantly, this is only achieved when a thin layer of molybdenum is first applied directly to the foil. The layer limits the formation of a thick Mo(S,Se)x layer resulting in a substantially reduced series resistance.
Original languageEnglish
Pages (from-to)3470-3476
JournalRSC Advances
Volume8
Issue number7
DOIs
Publication statusPublished - 17 Jan 2018

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