Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/168612
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dc.titleElectron transport and visible light absorption in a plasmonic photocatalyst based on strontium niobate
dc.contributor.authorWan, D. Y.
dc.contributor.authorZhao, Y. L.
dc.contributor.authorCai, Y.
dc.contributor.authorAsmara, T. C.
dc.contributor.authorHuang, Z.
dc.contributor.authorChen, J. Q.
dc.contributor.authorHong, J.
dc.contributor.authorYin, S. M.|}Nelson, C. T.
dc.contributor.authorMotapothula, M. R.
dc.contributor.authorYan, B. X.
dc.contributor.authorXiang, D.
dc.contributor.authorChi, X.
dc.contributor.authorZheng, H.
dc.contributor.authorChen, W.
dc.contributor.authorXu, R.
dc.contributor.authorAriando A.
dc.contributor.authorRusydi, A.
dc.contributor.authorMinor, A. M.
dc.contributor.authorBreese, M. B. H.
dc.contributor.authorSherburne, M.
dc.contributor.authorAsta, M.
dc.contributor.authorXu, Q. -H.
dc.contributor.authorVenkatesan, T.
dc.date.accessioned2020-05-28T09:05:20Z
dc.date.available2020-05-28T09:05:20Z
dc.date.issued2017-04-19
dc.identifier.citationWan, D. Y., Zhao, Y. L., Cai, Y., Asmara, T. C., Huang, Z., Chen, J. Q., Hong, J., Yin, S. M.|}Nelson, C. T., Motapothula, M. R., Yan, B. X., Xiang, D., Chi, X., Zheng, H., Chen, W., Xu, R., Ariando A., Rusydi, A., Minor, A. M., Breese, M. B. H., Sherburne, M., Asta, M., Xu, Q. -H., Venkatesan, T. (2017-04-19). Electron transport and visible light absorption in a plasmonic photocatalyst based on strontium niobate. NATURE COMMUNICATIONS 8. ScholarBank@NUS Repository.
dc.identifier.issn2041-1723
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/168612
dc.description.abstractSemiconductor compounds are widely used for photocatalytic hydrogen production applications, where photogenerated electron-hole pairs are exploited to induce catalysis. Recently, powders of a metallic oxide (Sr1-xNbO3, 0.03<x<0.20) were reported to show competitive photocatalytic efficiencies under visible light, which was attributed to interband absorption. This discovery expanded the range of materials available for optimized performance as photocatalysts. Here we study epitaxial thin films of SrNbO3+? and find that their bandgaps are ?4.1 eV. Surprisingly, the carrier density of the conducting phase exceeds 1022cm-3 and the carrier mobility is only 2.47 cm2 V-1 s-1. Contrary to earlier reports, the visible light absorption at 1.8 eV (?688 nm) is due to the plasmon resonance, arising from the large carrier density. We propose that the hot electron and hole carriers excited via Landau damping (during the plasmon decay) are responsible for the photocatalytic property of this material under visible light irradiation.
dc.publisherNature Publishing Group
dc.typeArticle
dc.contributor.departmentDEPT OF CHEMISTRY
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.contributor.departmentDEPT OF PHYSICS
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.contributor.departmentSINGAPORE SYNCHROTRON LIGHT SOURCE
dc.description.sourcetitleNATURE COMMUNICATIONS
dc.description.volume8
dc.published.statePublished
dc.grant.idNRF-CRP15-2015-01
dc.grant.fundingagencyNational Research Foundation
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