Sandy Al Bacha
Iron Oxychalcogenides and Their Photocurrent Responses.
Al Bacha, Sandy; Saitzek, Sébastien; Kabbour, Houria; McCabe, Emma E.
Authors
Abstract
We report here the results of an experimental investigation of the electronic properties and photocurrent responses of the CaFeO and La O Fe O phases and a computational study of the electronic structure of polar CaFeOSe. We find that both CaFeO ( = S and Se) have band gaps and conduction band edge positions compatible with light-driven photocatalytic water splitting, although the oxysulfide suffers from degradation due to the oxidation of Fe sites. The higher O/ ratio in the Fe coordination environment in CaFeOSe increases its stability without increasing the band gap beyond the visible range. The photocurrent CaFeOSe shows fast electron-hole separation, consistent with calculated carrier effective masses. These results suggest that these iron oxychalcogenides warrant further study to optimize their stability and morphology for photocatalytic and other photoactive applications.
Citation
Al Bacha, S., Saitzek, S., Kabbour, H., & McCabe, E. E. (2024). Iron Oxychalcogenides and Their Photocurrent Responses. Inorganic Chemistry, 63(7), 3292 - 3302. https://doi.org/10.1021/acs.inorgchem.3c03672
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 15, 2024 |
Online Publication Date | Feb 2, 2024 |
Publication Date | Feb 2, 2024 |
Deposit Date | Jan 16, 2024 |
Publicly Available Date | Feb 7, 2024 |
Journal | Inorganic Chemistry |
Print ISSN | 0020-1669 |
Electronic ISSN | 1520-510X |
Publisher | American Chemical Society |
Peer Reviewed | Peer Reviewed |
Volume | 63 |
Issue | 7 |
Pages | 3292 - 3302 |
DOI | https://doi.org/10.1021/acs.inorgchem.3c03672 |
Public URL | https://durham-repository.worktribe.com/output/2147721 |
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Publisher Licence URL
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