상세정보
학술지
ZnO Nanotips and Nanorods on Carbon Nanotube/Si Substrates: Anomalous P-type Like Optical Properties of Undoped ZnO Nanotips
- 저자
- 박승식, 이진모, 김성진, 김상우, 이민수, 김상협, 맹성렬, Shizuo Fujita
- 발행일
- 200805
- 출처
- Nanotechnology, v.19 no.24, pp.1-5
- ISSN
- 0957-4484
- 출판사
- Institute of Physics (IOP)
- 협약과제
- 06MB4700, 차세대 고성능 광전자소자 및 스마트 생화학 센서 구현을 위한 IT-BT-NT 융합 핵심기술 개발, 맹성렬
- 초록
- ZnO nanotips and nanorods were grown on screen-printed multi-walled carbon nanotube (MWCNT) films via thermal chemical vapor deposition at relative low growth temperatures of 400 and 500°C. Uniform formation of ZnO nanotips and nanorods occurred on MWCNT-printed Si substrates, but were rarely observed on bare Si substrates at the same growth temperatures. In photoluminescence (PL) measurements, it was found that ZnO nanorods exhibit typical intrinsic optical properties, while ZnO nanotips revealed p-type like luminescence behavior. Acceptor-related emission bands originating from neutral acceptor-bound exciton, free-to-acceptor and donor-acceptor pair transitions are clearly observed in temperature-dependent PL spectra of ZnO nanotips. © IOP Publishing Ltd.
- KSP 제안 키워드
- Carbon nano-tube(CNT), Chemical Vapor Deposition, Chemical vapour deposition(CVD), Donor-acceptor pair(DAP), Luminescence behavior, PL spectra, Si substrate, Undoped ZnO, ZnO nanorod, acceptor-bound exciton, multiwalled carbon nanotubes(MWCNTs)