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|Title:||Band alignment and electrocatalytic activity at the p-n La0.88Sr0.12FeO3/SrTiO3(001) heterojunction||Authors:||Wang, L.
Stoerzinger, K. A.
Bowden, M. E.
Chambers, S. A.
|Keywords:||X-ray Photoelectron Spectroscopy
|Issue Date:||2018||Source:||Wang, L., Du, Y., Chang, L., Stoerzinger, K. A., Bowden, M. E., Wang, J., & Chambers, S. A. (2018). Band alignment and electrocatalytic activity at the p-n La0.88Sr0.12FeO3/SrTiO3(001) heterojunction. Applied Physics Letters, 112(26), 261601-. doi:10.1063/1.5030897||Series/Report no.:||Applied Physics Letters||Abstract:||Ferrite perovskites have exhibited promising p-type conductivity and oxygen evolution reaction (OER) activity. In this work, we investigate heteroepitaxial p-n junctions formed by La0.88Sr0.12FeO3 and n-SrTiO3(001). Sr substitution for La in LaFeO3 is shown to be effective for introducing p-type conductivity, lowering the optical bandgap, and enhancing electrocatalytic OER. A staggered, type-II band alignment with a large built-in potential within the LSFO forms due to the polar interface. This electronic structure facilitates charge transfer across the p-n junction and accounts for the strongly thickness-dependent extent of OER we observe.||URI:||https://hdl.handle.net/10356/89761
|ISSN:||0003-6951||DOI:||10.1063/1.5030897||Rights:||© 2018 The Author(s) (Published by AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of The Author(s) (Published by AIP). The published version is available at: [http://dx.doi.org/10.1063/1.5030897]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||MSE Journal Articles|
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