Metal-free organic perovskite large single-crystals for X-ray detectors with high sensitivity
Xin Song a, Kui Zhao a, Shengzhong Liu a
a Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology; School of Materials Science & Engineering, Shaanxi Normal University, Xi’an, 710119, P. R. China.
nanoGe Perovskite Conferences
Proceedings of International online conference on Hybrid materials and optoelectronic devices (HYBRIDOE)
Online, Spain, 2020 December 15th - 17th
Organizers: Xueqing Xu, Baomin Xu, Hin-Lap (Angus) Yip and Xinhua Zhong
Oral, Xin Song, presentation 045
Publication date: 4th December 2020

Perovskite have attracted attention in recent years for optoelectronics such as X-ray detectors. Now most of the current high performance perovskite X-ray detectors are based on metals, especially lead perovskite. Such materials are limited its commercial application due to their own heavy metal toxicity, the toxicity of the preparation process to human intelligence, and the high cost of production. We report for the first time sensitive X-ray detector made of HMTANH4I3 metal-free organic perovskite large single-crystals. Metal-free organic perovskite has a low fabrication cost, low environment impact, chemical diversity, structural flexibility and flexible. By comparing the performances of other all-organic semiconductor detector, we show a low detectable X-ray dose rate of 4.96 µGys-1, and a high sensitivity of 50 µCGy-1cm-2 due to its high mobility–lifetime product (mt) and large gain. This allows the radiation dose applied to a active clothes, smart tag and security check applications.

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