Nanowire CdS-CdTe solar cells with molybdenum oxide as contact

Dang, Hongmei; Singh, Vijay P.

doi:10.1038/srep14859

Title: Nanowire CdS-CdTe solar cells with molybdenum oxide as contact

Journal Article · Tue Oct 06 00:00:00 EDT 2015 · Scientific Reports

DOI:https://doi.org/10.1038/srep14859· OSTI ID:1242271

Dang, Hongmei ^[1]; Singh, Vijay P. ^[1]

Univ. of Kentucky, Lexington, KY (United States)

Using a 10 nm thick molybdenum oxide (MoO_3-x) layer as a transparent and low barrier contact to p-CdTe, we demonstrate nanowire CdS-CdTe solar cells with a power conversion efficiency of 11% under front side illumination. Annealing the as-deposited MoO₃ film in N2 resulted in a reduction of the cell’s series resistance, from 9.97 Ω/cm² to 7.69 Ω/cm², and increase in efficiency from 9.9% to 11%. Under illumination from the back, the MoO_3-x/Au side, the nanowire solar cells yielded Jsc of 21 mA/cm² and efficiency of 8.67%. Our results demonstrate use of a thin layer transition metal oxide as a potential way for a transparent back contact to nanowire CdS-CdTe solar cells. As a result, this work has implications toward enabling a novel superstrate structure nanowire CdS-CdTe solar cell on Al foil substrate by a low cost roll-to roll fabrication process.

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Research Organization:: Univ. of Kentucky, Lexington, KY (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG36-05GO85013

OSTI ID:: 1242271

Journal Information:: Scientific Reports, Vol. 5; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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