Nanocrystalline TiO2 film based photoelectrochemical cell as self-powered UV-photodetector

被引：179

作者：

Li, Xiaodong ^{[1
]}

Gao, Caitian ^{[1
]}

Duan, Huigao ^{[2
]}

Lu, Bingan ^{[1
,2
]}

Pan, Xiaojun ^{[1
]}

Xie, Erqing ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China

[2] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Minist Educ, Key Lab Micronano Optoelect Devices, Changsha 410082, Hunan, Peoples R China

来源：

NANO ENERGY | 2012年 / 1卷 / 04期

基金：

中国国家自然科学基金;

关键词：

UV-photodetector; Self-powered; Photoelectrochemical; Photovoltaic; TiO2; SENSITIZED SOLAR-CELLS;

D O I：

10.1016/j.nanoen.2012.05.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Detection of ultraviolet (UV) light is usually based on the photoconductivity effect of semiconductors. Here, we demonstrate the application of a photoelectrochemical cell (PECC) as a self-powered UV-photodetector for detecting the UV light. It is based on the photovoltaic effect of PECCs. By connecting a PECC to an ammeter, the intensity of UV light have been quantified using the output short-circuit photocurrent (I-sc) of the PECC without a power source. This self-powered UV-photodetector exhibits a high photoresponse sensitivity of 269,850%, a rise time of 0.08 s and a decay time of 0.03 s for J(sc) signal. The fast time response, high photosensitivity, and good photosensitivity linearity combined with low-cost, environment-friendly, as well as the facile manufacturing process, make this new type of UV-photodetector suitable for practical applications. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：640 / 645

页数：6

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