Zuzhou Xiong, Maojun Zheng, Sida Liu, Li Ma and Wenzhong Shen
P-type Cu 2 O nanocrystals were deposited on n-type silicon nanowire arrays (Si NWs) to form core–shell heterojunction arrays structure via a simple electroless deposition technique. Scanning electron microscopy, transmission electron microscope and x-ray diffraction were utilized to characterize the morphology and structure of the core–shell nanosystem. The reflectivity of the obtained core–shell structure measured by UV/vis spectrometry showed a comparatively low reflectivity in the visible-light region, which implied good optical absorption performance. The water splitting performance of the obtained Si NWs, planar Si/Cu 2 O structure and Si NW/Cu 2 O core–shell nanosystem were studied. Owing to the large specific surface area, heterojunctions formed between Cu 2 O nanocrystallites and Si NWs and the light trapping effect of the NW array structure, the photocatalytic performance of the Si NW/Cu 2 O core–shell nanosystem increased ma...
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P-type Cu 2 O nanocrystals were deposited on n-type silicon nanowire arrays (Si NWs) to form core–shell heterojunction arrays structure via a simple electroless deposition technique. Scanning electron microscopy, transmission electron microscope and x-ray diffraction were utilized to characterize the morphology and structure of the core–shell nanosystem. The reflectivity of the obtained core–shell structure measured by UV/vis spectrometry showed a comparatively low reflectivity in the visible-light region, which implied good optical absorption performance. The water splitting performance of the obtained Si NWs, planar Si/Cu 2 O structure and Si NW/Cu 2 O core–shell nanosystem were studied. Owing to the large specific surface area, heterojunctions formed between Cu 2 O nanocrystallites and Si NWs and the light trapping effect of the NW array structure, the photocatalytic performance of the Si NW/Cu 2 O core–shell nanosystem increased ma...
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