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Enhanced photoresponse of FeS2 films: the role of marcasite-pyrite phase junctions

Wu, Longfei, Dzade, Nelson Y., Gao, Lu, Scanlon, David O., Öztürk, Zafer, Hollingsworth, Nathan, Weckhuysen, Bert M., Hensen, Emiel J. M., De Leeuw, Nora H. and Hofmann, Jan P. 2016. Enhanced photoresponse of FeS2 films: the role of marcasite-pyrite phase junctions. Advanced Materials 28 (43) , pp. 9602-9607. 10.1002/adma.201602222

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Abstract

The beneficial role of marcasite in iron-sulfide-based photo-electrochemical applications is reported for the first time. A spectacular improvement of the photoresponse observed experimentally for mixed pyrite/marcasite-FeS2 films can be ascribed to the presence of p/m phase junctions at the interface. Density functional theory calculations show that the band alignment at the phase boundary contributes to enhanced charge separation and transfer across the interface.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Additional Information: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License
Publisher: Wiley-VCH
ISSN: 0935-9648
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Date of First Compliant Deposit: 20 June 2017
Date of Acceptance: 15 September 2016
Last Modified: 15 Oct 2019 15:15
URI: http://orca-mwe.cf.ac.uk/id/eprint/101600

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