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Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films

Hobson, Theodore D.C.; Phillips, Laurie J.; Hutter, Oliver S.; Shiel, Huw; Swallow, Jack E.N.; Savory, Christopher N.; Nayak, Pabitra K.; Mariotti, Silvia; Das, Bhaskar; Bowen, Leon; Jones, Leanne A.H.; Featherstone, Thomas J.; Smiles, Matthew J.; Farnworth, Mark A.; Zoppi, Guillaume; Thakur, Pardeep K.; Lee, Tien-Lin; Snaith, Henry J.; Leighton, Chris; Scanlon, David O.; Dhanak, Vinod R.; Durose, Ken; Veal, Tim D.; Major, Jonathan D.

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Authors

Theodore D.C. Hobson

Laurie J. Phillips

Oliver S. Hutter

Huw Shiel

Jack E.N. Swallow

Christopher N. Savory

Pabitra K. Nayak

Silvia Mariotti

Bhaskar Das

Leon Bowen leon.bowen@durham.ac.uk
Senior Manager (Electron Microscopy)

Leanne A.H. Jones

Thomas J. Featherstone

Matthew J. Smiles

Mark A. Farnworth

Guillaume Zoppi

Pardeep K. Thakur

Tien-Lin Lee

Henry J. Snaith

Chris Leighton

David O. Scanlon

Vinod R. Dhanak

Ken Durose

Tim D. Veal

Jonathan D. Major



Abstract

The carrier-type of the emerging photovoltaic Sb2Se3 was evaluated for both thin films and bulk crystals via a range of complementary techniques. X-ray photoelectron spectroscopy (XPS), hot probe, Hall effect, and surface photovoltage spectroscopy showed films and crystals synthesized from the Sb2Se3 granulate material to be n-type with chlorine identified as an unintentional n-type dopant via secondary ion mass spectrometry analysis. The validity of chlorine as a dopant was confirmed by the synthesis of intrinsic crystals from metallic precursors and subsequent deliberate n-type doping by the addition of MgCl2. Chlorine was also shown to be a substitutional n-type shallow dopant by density functional theory calculations. TiO2/Sb2Se3 n–n isotype heterojunction solar cells with 7.3% efficiency are subsequently demonstrated, with band alignment analyzed via XPS.

Citation

Hobson, T. D., Phillips, L. J., Hutter, O. S., Shiel, H., Swallow, J. E., Savory, C. N., …Major, J. D. (2020). Isotype Heterojunction Solar Cells Using n-Type Sb2Se3 Thin Films. Chemistry of Materials, 32(6), 2621-2630. https://doi.org/10.1021/acs.chemmater.0c00223

Journal Article Type Article
Online Publication Date Mar 3, 2020
Publication Date Mar 24, 2020
Deposit Date Apr 15, 2020
Publicly Available Date Mar 28, 2024
Journal Chemistry of Materials
Print ISSN 0897-4756
Electronic ISSN 1520-5002
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 32
Issue 6
Pages 2621-2630
DOI https://doi.org/10.1021/acs.chemmater.0c00223

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This is an open access article published under a Creative Commons Attribution (CC-BY)
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.




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