Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , Beijing 100083, China.
Department of Materials and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
ACS Nano. 2015 Nov 24;9(11):11310-6. doi: 10.1021/acsnano.5b04995. Epub 2015 Oct 27.
We report a MAPbI3-based self-powered photodetector (SPPD). It has a dual sensing mechanism that relies on the joint properties of a photoelectric effect and a triboelectric effect of the perovskite material. Both the photoconductivity and the surface triboelectric density of the MAPbI3-based composite thin film are significantly altered upon solar illumination, which results in considerable reduction of the output voltage. The SPPD exhibits excellent responsivity (7.5 V W(-1)), rapid response time (<80 ms), great repeatability, and broad detection range that extends from UV to visible regions. This work presents a route to designing high-performance self-powered photodetectors from the aspect of materials.
我们报告了一种基于 MAPbI3 的自供电光电探测器（SPPD）。它具有双重传感机制，依赖于钙钛矿材料的光电效应和摩擦电效应的联合特性。基于 MAPbI3 的复合薄膜的光电导率和表面摩擦电密度在太阳光照下都会显著改变，这导致输出电压的大幅降低。该 SPPD 表现出优异的响应率（7.5 V W(-1)）、快速响应时间（<80 ms）、良好的重复性和从紫外到可见光区域的宽检测范围。这项工作从材料方面为设计高性能自供电光电探测器提供了一种途径。
