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BiVO4 has emerged as a promising material for solar water splitting. The poor ability of charge transport and separation always limits its performance for photoelectrochemical water splitting. Herein, we coupled… Click to show full abstract
BiVO4 has emerged as a promising material for solar water splitting. The poor ability of charge transport and separation always limits its performance for photoelectrochemical water splitting. Herein, we coupled n-type BiVO4 with p-type LaFeO3 and LaCoO3, achieving a photocurrent more than two times as high as bare BiVO4 at 1.23 V versus a reversible hydrogen electrode. Also, the onset potential was negatively shifted about 260 mV. The promotion of performance is mainly because the space charge layer in BiVO4 is broadened, and the band bend is enhanced, which facilitates the separation and transport of photo-generated charges.
Journal Title: Research on Chemical Intermediates
Year Published: 2017
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