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Low-temperature, high-speed reactive deposition of metal oxides for perovskite solar cells

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Abstract

Nickel oxide (NiO) and titanium dioxide (TiO2) charge-extraction layers are fabricated under a partial pressure of O2 from nickel and titanium metals using a reactive electron-beam evaporation process. Using such materials, inverted architecture perovskite solar cells incorporating a NiO hole-transport layer achieve power conversion efficiencies up to 15.8%, whilst standard architecture devices using a TiO2 electron-transport layer achieve a power conversion efficiency up to 13.9%. Critically, we find that such metal oxides can be deposited at high speed (nm s−1) and at low substrate-temperature, and do not require a high-temperature anneal step after deposition, making reactive electron-beam evaporation compatible with roll-to-roll processing on sensitive flexible polymeric substrates.

Graphical abstract: Low-temperature, high-speed reactive deposition of metal oxides for perovskite solar cells

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Publication details

The article was received on 09 Nov 2018, accepted on 07 Jan 2019 and first published on 11 Jan 2019


Article type: Paper
DOI: 10.1039/C8TA10827G
Citation: J. Mater. Chem. A, 2019, Advance Article
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    Low-temperature, high-speed reactive deposition of metal oxides for perovskite solar cells

    T. J. Routledge, M. Wong-Stringer, O. S. Game, J. A. Smith, J. E. Bishop, N. Vaenas, B. G. Freestone, David M. Coles, T. McArdle, A. R. Buckley and D. G. Lidzey, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C8TA10827G

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