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Hybrid Perovskite Photoconductivity Visible Region Detector with High Speed and Stability
Baoliang Mi,Huanlin Zhou,Zihang Song,Guiqing Zhao,Guoqing Tong,YANG JIANG 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.12
Hybird perovskite materials have been regarded as an outstanding candidate in the optoelectronic devices. In this work, a high speed perovskite photodetector (PD) based on the gas–solid reaction process was proposed and a high responsivity and detectivity of 5.87A W -1, 10 12 Jones were obtained after annealing at 120℃ for 30 min. Compared to traditional solution process, the gas–solid reaction provided a full coverage film with high crystallization, which is beneficial to the electrons transportation and the capture of the incident light. The response time of device is up to 248 μs/207 μs under 700 Hz. More importantly, the device exhibits a good stability after storing in the air for two months. The perovskite PD shows a high performance upon the light illumination, revealing that the hybrid perovskite is a promising candidate for optoelectronic applications.