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

Wu, Longfei, Dzade, Nelson Y. ORCID: https://orcid.org/0000-0001-7733-9473, Gao, Lu, Scanlon, David O., Öztürk, Zafer, Hollingsworth, Nathan, Weckhuysen, Bert M., Hensen, Emiel J. M., de Leeuw, Nora H. ORCID: https://orcid.org/0000-0002-8271-0545 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
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:	20 Jan 2024 14:44
URI:	https://orca.cardiff.ac.uk/id/eprint/101600

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