Triboelectric Nanogenerator as an Active UV Photodetector
Triboelectric Nanogenerator as an Active UV Photodetector
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DOI：
10.1002/adfm.201402764
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发表时间：
2014-05-01
影响因子：
19
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Lin, Zong-Hong;Cheng, Gang;Wang, Zhong Lin
自供电纳米传感器和纳米系统在过去几十年中引起了极大的关注，并逐渐成为环境保护/检测的最理想和最有前途的原型，因为不需要电池来为设备供电。因此，本文提出了一种基于摩擦纳米发电机（TENG）结构的自供电光电探测器的设计。三维树枝状二氧化钛纳米结构的合成作为内置的紫外光探测器以及接触材料的TENG。这种具有成本效益、坚固耐用且易于制造的TENG光电探测器具有上级光响应特性，包括超过280 A W-1的优异响应度、快速上升时间（18 ms）和衰减时间（31 ms）以及从20 μ W cm（-2）到7 mW cm（-2）的宽光强检测范围。在论文的最后一部分，一个独立的和自供电的环境传感装置的应用聚（甲基丙烯酸甲酯）（PMMA）基板和弹簧组装的TENG基光电探测器。这些结果表明，新的原型传感装置的基础上TENG配置显示出巨大的潜力，作为一个自供电的光电探测器。
Self-powered nanosensors and nanosystems have attracted significant attention in the past decades and have gradually become the most desirable and promising prototype for environmental protection/detection because no battery is needed to power the device. Therefore, in this paper a design is proposed for a self-powered photodetector based on triboelectric nanogenerator (TENG) configuration. 3D dendritic TiO2 nanostructures are synthesized as the built-in UV photodetector as well as the contact material of the TENG. The cost-effective, robust, and easily fabricated TENG-based photodetector presents superior photoresponse characteristics, which include an excellent responsivity over 280 A W-1, rapid rise time (18 ms) and decay time (31 ms), and a wide detection range of light intensity from 20 mu W cm(-2) to 7 mW cm(-2). In the last part of the paper, a stand-alone and self-powered environmental sensing device is developed by applying poly(methyl methacrylate) (PMMA) substrates and springs to assemble the TENG-based photodetector. These results indicate that the new prototype sensing device based on the TENG configuration shows great potential as a self-powered photodetector.