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- W4306893315 abstract "Metal oxides are promising for photoelectrochemical (PEC) water splitting due to their robustness and low cost. However, poor charge carrier transport impedes their activity, particularly at low-bias voltage. Here we demonstrate the unusual effectiveness of phosphorus doping into bismuth vanadate (BiVO4) photoanode for efficient low-bias PEC water splitting. The resulting BiVO4 photoanode shows a separation efficiency of 80% and 99% at potentials as low as 0.6 and 1.0 VRHE, respectively. Theoretical simulation and experimental analysis collectively verify that the record performance originates from the unique phosphorus-doped BiVO4 configuration with concurrently mediated carrier density, trap states, and small polaron hopping. With NiFeOx cocatalyst, the BiVO4 photoanode achieves an applied bias photon-to-current efficiency of 2.21% at 0.6 VRHE. The mechanistic understanding of the enhancement of BiVO4 properties provides key insights in trap state passivation and polaron hopping for most photoactive metal oxides." @default.
- W4306893315 created "2022-10-21" @default.
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- W4306893315 date "2022-10-20" @default.
- W4306893315 modified "2023-10-18" @default.
- W4306893315 title "Low-bias photoelectrochemical water splitting via mediating trap states and small polaron hopping" @default.
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- W4306893315 doi "https://doi.org/10.1038/s41467-022-33905-6" @default.
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