상세정보
학술지
Nanoscale Physico-Chemical Investigation of Complementary ZnO-Si Nanocomposites and Their Photoconductive Behavior
- 발행일
- 201702
- 출처
- Current Applied Physics, v.17 no.2, pp.152-156
- ISSN
- 1567-1739
- 출판사
- Elsevier
- 협약과제
- 16PB1400, 대면적 그래핀 기판을 이용한 저비용, 고품위의 III-V 나노와이어 발광소자 개발, 박종혁
- 초록
- 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.
- 키워드
- Electron energy loss spectroscopy (EELS), Photocurrents, Scanning transmission electron microscopy (STEM), ZnO-Si nanocomposites
- KSP 제안 키워드
- 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