標題: Photoresponse of hydrothermally grown lateral ZnO nanowires
作者: Yang, Po-Yu
Wang, Jyh-Liang
Tsai, Wei-Chih
Wang, Shui-Jinn
Lin, Jia-Chuan
Lee, I-Che
Chang, Chia-Tsung
Cheng, Huang-Chung
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Nanowire;Self-assembled lateral growth;Hydrothermal method;Low temperature
公開日期: 1-Oct-2010
摘要: In this paper, a simple self-assembled lateral growth of ZnO nanowires (NWs) photodetector has been synthesized by a hydrothermal method at a temperature as low as 85 degrees C. The ZnO NWs exhibit single-crystalline wurtzite with elongated c-axis and can be selectively lateral self-assembled around the edges of ZnO seeding layer. The current of ZnO NWs is sensitive to the variation of ambient pressures, i.e. 4.47 mu A was decreased to 1.48 mu A with 5 V-bias as 1.1 x 10(-6) Torr changed to 760 Torr. accordingly. Moreover, the current voltage characteristics of ZnO NWs photodetectors can be evidently distinguished by UV illumination (i.e. lambda = 325 nm). The photocurrent of ZnO NWs with UV illumination is twice larger than dark current while the voltage biased at 5 V. Consequently, this faster photoresponse convinces that the hydrothermally grown lateral ZnO NWs devices have a fairly good for the fabrication of UV photodetectors. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.tsf.2010.04.104
http://hdl.handle.net/11536/32119
ISSN: 0040-6090
DOI: 10.1016/j.tsf.2010.04.104
期刊: THIN SOLID FILMS
Volume: 518
Issue: 24
起始頁: 7328
結束頁: 7332
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