Zhang Yong, Xu Wenxin, Xu Xiaojie, Yang Wei, Li Siyuan, Chen Jiaxin, Fang Xiaosheng
Department of Materials Science, Fudan University, Shanghai 200433, China.
Nanoscale Horiz. 2019 Mar 1;4(2):452-456. doi: 10.1039/c8nh00401c. Epub 2018 Dec 10.
It has always been a challenge to prepare self-powered ultraviolet photodetectors (UV PDs) utilizing a green, facile and low-cost method. Here, we provide such an approach for fabricating self-powered photodetectors based on Te nanowire/TiO nanoparticle (NP) and Te nanowire/ZnO nanoparticle (NP) heterojunctions. It is noteworthy that such devices were prepared via simply brushing non-toxic solution-processed Te nanowires and commercial TiO and ZnO nanoparticles onto paper. The as-obtained UV PDs can work under zero bias due to photovoltaic effects from the Te/TiO and Te/ZnO heterojunctions. This study not only presents high-performance UV PDs, but also provides a general and effective method for developing environmentally-friendly and energy-efficient optoelectronic devices for practical applications. The concept of employing daily-use brushes and recyclable paper provides a facile way to fabricate green low-cost PDs.
利用绿色、简便且低成本的方法制备自供电紫外光电探测器（UV PDs）一直是一项挑战。在此，我们提供了一种基于碲纳米线/二氧化钛纳米颗粒（NP）和碲纳米线/氧化锌纳米颗粒（NP）异质结制造自供电光电探测器的方法。值得注意的是，此类器件是通过将无毒溶液处理的碲纳米线以及商用二氧化钛和氧化锌纳米颗粒简单地刷涂在纸张上制备而成的。由于碲/二氧化钛和碲/氧化锌异质结的光伏效应，所制备的紫外光电探测器能够在零偏压下工作。本研究不仅展示了高性能的紫外光电探测器，还为开发用于实际应用的环保且节能的光电器件提供了一种通用且有效的方法。使用日常刷子和可回收纸张的概念为制造绿色低成本光电探测器提供了一种简便途径。
