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Journal Article
Nanoscale Physico-Chemical Investigation of Complementary ZnO-Si Nanocomposites and Their Photoconductive Behavior
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- Authors
- Ji-Hwan Kwon, Jonghyurk Park, Gyeong-Su Park, Jian-Min Zuo, Seung-Youl Kang, Ji-Young Oh, Miyoung Kim
- Issue Date
- 2017-02
- Citation
- Current Applied Physics, v.17, no.2, pp.152-156
- ISSN
- 1567-1739
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- The complementary ZnO-Si nanocomposites were synthesized via facile solution process at room temperature and enhanced photoconductive switching behavior was observed under a white light irradiation. The morphology and atomic/electronic structure of ZnO-Si nanocomposites were investigated by atomic-resolution (scanning) transmission electron microscopy combined with electron energy loss spectroscopy. It is revealed that host ZnO nanorods contained peculiar nm-sized Si-rich phases on the ZnO surface, in which effective band gap was significantly decreased. Our results explain a collaborative interaction between host ZnO nanorods and Si-rich phase which led to an enhancement of photoconductive properties over as-prepared ZnO nanorod.
- KSP Keywords
- Atomic-resolution, Atomic/electronic structure, Collaborative interaction, Effective band gap, Electron Energy Loss Spectroscopy(EELS), Electronic structure of ZnO, Physico-chemical, Room-temperature, Switching behavior, Transmission Electron Microscopy(TEM), ZnO nanorod