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Assessing the suitability of copper thiocyanate as a hole-transport layer in inverted CsSnI3 perovskite photovoltaics
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Wijesekara, Anjana, Varagnolo, Silvia, Dabera, Dinesha, Marshall, Kenneth P., Pereira, Harriotte Jessica and Hatton, Ross A. (2018) Assessing the suitability of copper thiocyanate as a hole-transport layer in inverted CsSnI3 perovskite photovoltaics. Scientific Reports, 8 . 15722. doi:10.1038/s41598-018-33987-7 ISSN 2045-2322.
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Official URL: https://doi.org/10.1038/s41598-018-33987-7
Abstract
We report the findings of a study into the suitability of copper (I) thiocyanate (CuSCN) as a hole-transport layer in inverted photovoltaic (PV) devices based on the black gamma phase (B-γ) of CsSnI3 perovskite. Remarkably, when B-γ-CsSnI3 perovskite is deposited from a dimethylformamide solution onto a 180–190 nm thick CuSCN film supported on an indium-tin oxide (ITO) electrode, the CuSCN layer is completely displaced leaving a perovskite layer with high uniformity and coverage of the underlying ITO electrode. This finding is confirmed by detailed analysis of the thickness and composition of the film that remains after perovskite deposition, together with photovoltaic device studies. The results of this study show that, whilst CuSCN has proved to be an excellent hole-extraction layer for high performance lead-perovskite and organic photovoltaics, it is unsuitable as a hole-transport layer in inverted B-γ-CsSnI3 perovskite photovoltaics processed from solution.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | Photovoltaic cells, Thiocyanates -- Industrial applications, Perovskite | |||||||||||||||
| Journal or Publication Title: | Scientific Reports | |||||||||||||||
| Publisher: | Nature Publishing Group | |||||||||||||||
| ISSN: | 2045-2322 | |||||||||||||||
| Official Date: | 24 October 2018 | |||||||||||||||
| Dates: |
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| Volume: | 8 | |||||||||||||||
| Article Number: | 15722 | |||||||||||||||
| DOI: | 10.1038/s41598-018-33987-7 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Date of first compliant deposit: | 2 January 2019 | |||||||||||||||
| Date of first compliant Open Access: | 3 January 2019 | |||||||||||||||
| Grant number: | EPSRC: Leverhulme | |||||||||||||||
| RIOXX Funder/Project Grant: |
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