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• W4375946311 abstract "Monolithic integrated photoelectrochemical devices consisting of semiconductors and co-catalysts have always been restricted by the trade-off between light absorption and catalytic activity upon frontside illumination. Herein, we proposed a facile strategy to spatio-selectively deposit Pt catalyst on the top of p-Si micro-pyramids, which not only enables substantial light absorption but also immensely boosts the charge transport and mass transfer. With the help of dark-field microscopy and microscopic photocurrent mapping, it is revealed that the top of p-Si micro-pyramids is an ideal electron-migration channel for efficient charge carrier extraction. This spatio-selective strategy affords the Si photocathode to achieve a high applied bias photon-to-current efficiency of 3.84% for hydrogen production, significantly greater than the control sample with the same amount of Pt catalyst deposited uniformly on the same substrates (0.04%)." @default.
• W4375946311 created "2023-05-10" @default.
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• W4375946311 date "2023-05-09" @default.
• W4375946311 modified "2023-10-03" @default.
• W4375946311 title "Enhanced solar hydrogen production by manipulating the spatial distribution of Pt catalyst onto Si micro-pyramid arrays" @default.
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• W4375946311 doi "https://doi.org/10.1063/5.0141701" @default.
• W4375946311 hasPublicationYear "2023" @default.
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