A self-powered UV photodetector based on TiO2 nanorod arrays
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- 作者：Yanru Xie (9)
Lin Wei (10)
Guodong Wei (9)
Qinghao Li (9)
Dong Wang (9)
Yanxue Chen (9)
Shishen Yan (9)
Guolei Liu (9)
Liangmo Mei (9)
Jun Jiao (11) (12) - 关键词：TiO2 ; Nanorod ; Ultraviolet photodetector ; Solid–liquid heterojunction
- 刊名：Nanoscale Research Letters
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：8
- 期：1
- 全文大小：515KB
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Lin Wei (10)
Guodong Wei (9)
Qinghao Li (9)
Dong Wang (9)
Yanxue Chen (9)
Shishen Yan (9)
Guolei Liu (9)
Liangmo Mei (9)
Jun Jiao (11) (12)
9. School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People’s Republic of China
10. School of Information Science and Engineering, Shandong University, Jinan, 250100, People’s Republic of China
11. Department of Mechanical and Materials Engineering, Portland State University, P.O. Box 751, Portland, OR, 97207-0751, USA
12. Department of Physics, Portland State University, P.O. Box 751, Portland, OR, 97207-0751, USA - ISSN：1556-276X
文摘
Large-area vertical rutile TiO2 nanorod arrays (TNAs) were grown on F/SnO2 conductive glass using a hydrothermal method at low temperature. A self-powered ultraviolet (UV) photodetector based on TiO2 nanorod/water solid–liquid heterojunction is designed and fabricated. These nanorods offer an enlarged TiO2/water contact area and a direct pathway for electron transport simultaneously. By connecting this UV photodetector to an ammeter, the intensity of UV light can be quantified using the output short-circuit photocurrent without a power source. A photosensitivity of 0.025 A/W and a quick response time were observed. At the same time, a high photosensitivity in a wide range of wavelength was also demonstrated. This TNA/water UV detector can be a particularly suitable candidate for practical applications for its high photosensitivity, fast response, excellent spectral selectivity, uncomplicated low-cost fabrication process, and environment-friendly feature.