6.6% efficient antimony selenide solar cells using grain structure control and an organic contact layer



Hutter, Oliver ORCID: 0000-0002-8838-8956, Phillips, LJ ORCID: 0000-0001-5181-1565, Durose, Ken ORCID: 0000-0003-1183-3211 and Major, Jon ORCID: 0000-0002-5554-1985
(2018) 6.6% efficient antimony selenide solar cells using grain structure control and an organic contact layer. Solar Energy Materials and Solar Cells, 188. pp. 177-181.

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Abstract

We report a high efficiency antimony selenide (Sb2Se3) photovoltaic device structure using a new multi-step close space sublimation deposition process incorporating a Sb2Se3 seed layer; key to achieving higher efficiency devices via close space sublimation. Utilizing a glass|FTO|TiO2|Sb2Se3|PCDTBT|Au structure, a peak efficiency of 6.6% was achieved, which is comparable to the current record devices for this material. Crucially, this device avoids toxic lead in the hole transport material, and cadmium in the window layer. Moreover, the addition of the PCDTBT back contact both maintains peak efficiency of 6.6%, and improves the uniformity of performance, increasing the average efficiency from 4.3% to 6.1%.

Item Type: Article
Uncontrolled Keywords: Antimony selenide, Sb2Se3, Photovoltaics, Solar cells, Thin film, Organic
Depositing User: Symplectic Admin
Date Deposited: 11 Sep 2018 10:10
Last Modified: 19 Jan 2023 01:18
DOI: 10.1016/j.solmat.2018.09.004
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3026102