Enhanced Photoresponse of FeS2 Films: The Role of Marcasite–Pyrite Phase Junctions
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Publication date
2016-11-16
Authors
Wu, Longfei
Dzade, Nelson Y.
Gao, L.
Scanlon, D. O.
Özturk, Zafer
Hollingsworth, N.
Weckhuysen, Bert
Hensen, E. J. M.
de Leeuw, Nora H.
Hofmann , J. P.
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Article
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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.
Keywords
Photovoltaic, Solar Cells, Iron pyrite
Citation
Wu, L, Dzade, N Y, Gao, L, Scanlon, D O, Özturk, Z, Hollingsworth, N, Weckhuysen, B M, Hensen, E J M, de Leeuw, N H & Hofmann , J P 2016, 'Enhanced Photoresponse of FeS 2 Films : The Role of Marcasite–Pyrite Phase Junctions', Advanced Materials, vol. 28, no. 43, pp. 9602-9607. https://doi.org/10.1002/adma.201602222