标题：High-Performance Self-Powered UV Detector Based on SnO2-TiO2Nanomace Arrays
作者：Chen, Duo ;Wei, Lin ;Meng, Lingpan ;Wang, Dong ;Chen, Yanxue ;Tian, Yufeng ;Yan, Shishen ;Mei, Liangmo ;Jiao, Jun
作者机构：[Chen, Duo ;Meng, Lingpan ;Wang, Dong ;Chen, Yanxue ;Tian, Yufeng ;Yan, Shishen ;Mei, Liangmo ] School of Physics and State Key Laboratory of Crystal 更多
来源：Nanoscale Research Letters
摘要：Abstract: Photoelectrochemical cell-typed self-powered UV detectors have attracted intensive research interest due to their low cost, simple fabrication process, and fast response. In this paper, SnO2-TiO2nanomace arrays composed of SnO2nanotube trunk and TiO2nanobranches were prepared using soft chemical methods, and an environment-friendly self-powered UV photodetector using this nanostructure as the photoanode was assembled. Due to the synergistic effect of greatly accelerated electron-hole separation, enhanced surface area, and reduced charge recombination provided by SnO2-TiO2nanomace array, the nanostructured detector displays an excellent performance over that based on bare SnO2arrays. The impact of the growing time of TiO2branches on the performance of UV photodetector was systematically studied. The device based on optimized SnO2-TiO2nanomace arrays exhibits a high responsivity of 0.145 A/W at 365 nm, a fast rising time of 0.037 s, and a decay time of 0.015 s, as well as excellent spectral selectivity. This self-powered photodetector is a promising candidate for high-sensitivity, high-speed UV-detecting application.
© 2018, The Author(s).