Sun Haoxuan, Lei Tianyu, Tian Wei, Cao Fengren, Xiong Jie, Li Liang
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China.
College of Physics, Optoelectronics and Energy, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China.
Small. 2017 Jul;13(28). doi: 10.1002/smll.201701042. Epub 2017 May 30.
Flexible perovskite photodetectors are usually constructed on indium-tin-oxide-coated polymer substrates, which are expensive, fragile, and not resistant to high temperature. Herein, for the first time, a high-performance flexible perovskite photodetector is fabricated based on low-cost carbon cloth via a facile solution processable strategy. In this device, perovskite microcrystal and Spiro-OMeTAD (hole transporting material) blended film act as active materials for light detection, and carbon cloth serves as both a flexible substrate and a conductive electrode. The as-fabricated photodetector shows a broad spectrum response from ultraviolet to near-infrared light, high responsivity, fast response speed, long-term stability, and self-powered capability. Flexible devices show negligible degradation after several tens of bending cycles and at the extremely bending angle of 180°. This work promises a new technique to construct flexible, high-performance photodetectors with low cost and self-powered capability.
柔性钙钛矿光电探测器通常构建在涂有氧化铟锡的聚合物基板上，这种基板昂贵、易碎且不耐高温。在此，首次通过一种简便的溶液可加工策略，基于低成本的碳布制备了一种高性能柔性钙钛矿光电探测器。在该器件中，钙钛矿微晶和Spiro-OMeTAD（空穴传输材料）混合膜用作光检测的活性材料，而碳布既作为柔性基板又作为导电电极。所制备的光电探测器显示出从紫外光到近红外光的宽光谱响应、高响应度、快速响应速度、长期稳定性和自供电能力。柔性器件在几十次弯曲循环后以及在180°的极端弯曲角度下显示出可忽略不计的降解。这项工作有望成为一种构建具有低成本和自供电能力的柔性、高性能光电探测器的新技术。
