Enhanced Photoresponse of Inorganic Cesium Lead Halide Perovskite for Ultrasensitive Photodetector
Abstract
We report on a simple way to enhance the photoresponse and efficiency of inorganic cesium lead halide (CsPbIBr2) perovskite for use as a light-absorbing layer in photodetectors integrated with a mechanoluminescent (ML) or triboluminescence (TL) materials for pressure sensing applications. Herein, we proposed to integrate a thermal and moisture stable inorganic cesium lead halide-based CsPbIBr2 perovskite with the TL materials to develop a novel pressure sensor for real-time and in-situ structural health monitoring (SHM) of aerospace vehicles’ fuselage, automobiles and structures. However, the inorganic CsPbIBr2 perovskite layer fabricated using a one-step spin-coating method is usually composed of small grain size with a large number of grain boundaries and compositional defects. Therefore, we employed a metal doping approach to enhance the CsPbIBr2 perovskite film quality. By introducing a small amount of silver iodide (AgI), the photoresponse, responsivity, and response time of the detector were enhanced. This work offers a promising approach for developing an integrated ML pressure sensor with high-quality polycrystalline perovskite for SHM.
Publication Title
Lecture Notes in Civil Engineering
Recommended Citation
Eze, V., Adams, G., Beckford, B., Shohag, M., & Okoli, O. (2021). Enhanced Photoresponse of Inorganic Cesium Lead Halide Perovskite for Ultrasensitive Photodetector. Lecture Notes in Civil Engineering, 128, 622-631. https://doi.org/10.1007/978-3-030-64908-1_58
