TiO_(2)光电化学型紫外探测器  

TiO_(2)Based Photoelectrochemical Type UV Detector

作　　者：嵇繁博 张鑫淼 王心华[1] 潘孝军[1,2] JI Fanbo;ZHANG Xinmiao;WANG Xinhua;PAN Xiaojun(School of Physical and Technology,Lanzhou University,Lanzhou 730000,China;National Demonstration Center for Experimental Physics Education(Lanzhou University),Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学物理科学与技术学院,甘肃兰州730000 [2]兰州大学物理学国家级实验教学示范中心(兰州大学),甘肃兰州730000

出　　处：《大学物理实验》2024年第3期16-21,共6页Physical Experiment of College

基　　金：中央高校基本科研业务费(lzujbky-2022-08);甘肃省教学成果培育项目(PX-48232728)。

摘　　要：紫外辐射人眼不可见,对人类的健康有利有弊,因此需要对其进行探测。在各种类型的紫外探测器中,光电化学型紫外探测器因其制备简单、响应速度快、价格低廉及可自供能而备受关注。本文利用商用P25纳米小球FTO导电玻璃基底上制备了薄膜光阳极,在此基础上组装了三明治结构的光电化学型紫外探测器。光电测试结果显示在365 nm、光强为35 mW·cm^(-2)的紫外光照射下,器件的开路电压为0.576 V、短路电流密度达到了1.045 mA·cm^(-2),响应上升时间为0.010 s、恢复时间为0.012 s。在周期性紫外光的照射下,器件呈现稳定的、可重复的开关性能。另外,器件在可见光区几乎没有响应,展示其可见光盲特性。最后,器件在5~35 mW·cm^(-2)的光强范围内呈现线性输入输出性能。The UV radiation is both beneficial and harmful for human health,but it not visible for human eye,so it needs to be detected.Among various types of UV detectors,photochemical type UV detectors have attracted much attention for their simple fabricated process,fast response speed,low cost and self-powered and so on.In this work,commercial P25 nanospheres were scraped on FTO conductive glass substrate and assembled sandwich structure photochemical type UV detectors.Under the irradiation of 365 nm with 35 mW·cm^(-2),the open circuit voltage of the device is 0.576 V,the short circuit current density reaches 1.045 mA·cm^(-2),the response rise time is 0.010 s and the recovery time is 0.01 s.Under the periodic ultraviolet irradiation,the device also shows a stable and reproducible switching performance.In addition,the device still shows excellent visible light blindness characteristics and linear input and output characteristics.

关 键 词：TiO_(2) 光电化学型 紫外探测器 

分 类 号：O472.8[理学—半导体物理]