Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 17, Issue 26, Pages 16784-16790Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp00679a
Keywords
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Funding
- Henan Provincial Basic and Frontier Project [132300410248]
- Henan Normal University Youth Key Teachers Project [5101029470611]
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We report a facile approach for the preparation of the vertically aligned, large scale CdS/p-Si shell/core nanowire heterojunction arrays based on successive ionic layer adsorption and reaction deposition. The results indicate that the rectifying characteristics of CdS/Si shell/core nanowire arrays can be tailored by changing the number of SILAR cycles, and the CdS/Si shell-core nanowire heterojunctions have good photo-sensitivity (the ratio of photocurrent to dark current could reach 14.96 at -1 V reverse bias) under AM 1.5 (1 Sun) illumination. Furthermore, the electron transport mechanism across the CdS/Si nano-heterojunctions is also discussed in detail. This reported CdS/p-Si shell/core nanowire structure offers a generic approach for the integration of new functional materials for photo-electronics applications.
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