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

Hutter, Oliver, Phillips, Laurie J., Durose, Ken and Major, Jonathan D. (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. ISSN 0927-0248

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Official URL: https://doi.org/10.1016/j.solmat.2018.09.004

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, Organic, Photovoltaics, SbSe, Solar cells, Thin film
Subjects: F200 Materials Science
G900 Others in Mathematical and Computing Sciences
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 06 Mar 2020 14:36
Last Modified: 06 Mar 2020 14:45
URI: http://nrl.northumbria.ac.uk/id/eprint/42398

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