標題: Photoconductive Enhancement of Single-Layer Tin Oxide-Coated ZnO Nanowires
作者: Lin, Chin-Ching
Chen, Yu-Wei
Chiang, Mei-Ching
Lee, Chia-Hua
Tung, Yung-Liang
Chen, San-Yuan
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: II-VI semiconductors;nanowires;photoconductivity;photoexcitation;pyrolysis;semiconductor quantum wires;tin compounds;transmission electron microscopy;ultraviolet radiation effects;wide band gap semiconductors;zinc compounds
公開日期: 2010
摘要: In this study, zinc oxide nanowires (ZnO NWs) coated with crystalline tin oxide (SnO(2)) by an ultrasonic spray pyrolysis were investigated. High resolution transmission electron microscopy analysis confirms that a continuous single SnO(2) layer of about 10 nm has been coated on the ZnO NWs. Photoconductivity measurements revealed that the ZnO NWs coated with the single uniform SnO(2) layer had a higher photoconductivity ratio by about a factor of 8 compared to the pristine ZnO NWs, attributed to the multi-photoexcited electrons. Under a steady radiation of UV light (lambda=325 nm), a substantial increase in the steady-state photocurrent is noticeable, suggesting that extra photoinduced charges are transferred from SnO(2) to ZnO NWs.
URI: http://hdl.handle.net/11536/6176
http://dx.doi.org/10.1149/1.3271100
ISSN: 0013-4651
DOI: 10.1149/1.3271100
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 157
Issue: 2
起始頁: H227
結束頁: H230
顯示於類別:期刊論文


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