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- W3194796984 abstract "Upconversion fluorescence (NaYF4/Yb, Er) is a promising technique employed by solar cells for enhancing light harvesting, especially for manipulating the low-energy photons. Here, we report a semiconductor/NaYF4/Yb, Er hybrid structure applied to photoelectrochemical (PEC) water oxidation. Three emission peaks in visible wavelengths at 522.5, 541.5, and 655.5 nm are observed for NaYF4/Yb, Er under 980 nm excitation due to a nonlinear anti-Stokes process. Owing to the overlap between the upconversion fluorescent emission of NaYF4/Yb, Er and the UV–vis absorption edge of Fe2O3, the hybrid structure Fe2O3/NaYF4/Yb, Er presents 70% enhancement of the photocurrent density compared with the pristine Fe2O3 and 19% improvement in the carrier concentration. The charge-transfer kinetics at the electrode/electrolyte interface is also reinforced. Through the radiation-reabsorption mechanism, this hybrid semiconductor integrated with upconversion fluorescence reveals efficient energy conversion effect and presents valuable reference for PEC applications." @default.
- W3194796984 created "2021-08-30" @default.
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- W3194796984 date "2021-08-12" @default.
- W3194796984 modified "2023-10-16" @default.
- W3194796984 title "Manipulating the Low-Energy Photons by an Upconversion Fluorescent Hybrid Photocatalyst for Water Oxidation" @default.
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- W3194796984 doi "https://doi.org/10.1021/acssuschemeng.1c03189" @default.
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