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High-Performance X-ray Detection Based on One-Dimensional Inorganic Halide Perovskite CsPbI3.
The Journal of Physical Chemistry Letters ( IF 5.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.jpclett.9b03523
Bin-Bin Zhang 1 , Xin Liu 1 , Bao Xiao 1 , Ahmed Ben Hafsia 1 , Kaige Gao 2 , Yadong Xu 1 , Jian Zhou 3 , Yanbin Chen 4
Affiliation  

Recently, three-dimensional (3D) halide perovskites were considered as X-ray detection materials because of their high mobility, carrier lifetime, and absorption of X-ray radiation. However, their detection sensitivity and instability at extreme conditions and environments still require optimization. In our present research work, we report using one-dimensional (1D) inorganic halide perovskite CsPbI3 crystals for stable X-ray detection. Remarkably, an X-ray detector made of CsPbI3 has a high sensitivity of 2.37 mC·Gy-1·cm-2, which is an order of magnitude greater than that of detectors using 3D halide perovskites reported previously. The high-sensitivity X-ray detection of CsPbI3 crystals is attributed to their high resistivity of 7.4 × 109 Ω·cm and large carrier mobility-lifetime product of 3.63 × 10-3 cm2·V-1. Our investigation demonstrates the quite promising applications of X-ray detectors made of the low-dimensional perovskite crystals.

中文翻译:

基于一维无机卤化物钙钛矿CsPbI3的高性能X射线检测。

最近,由于三维(3D)卤化物钙钛矿的高迁移率,载流子寿命和对X射线辐射的吸收,因此被认为是X射线检测材料。但是,它们的检测灵敏度以及在极端条件和环境下的不稳定性仍然需要优化。在我们目前的研究工作中,我们报告使用一维(1D)无机卤化物钙钛矿CsPbI3晶体进行稳定的X射线检测。值得注意的是,由CsPbI3制成的X射线检测器具有2.37 mC·Gy-1·cm-2的高灵敏度,这比先前报道的使用3D卤化物钙钛矿的检测器的灵敏度高一个数量级。CsPbI3晶体的高​​灵敏度X射线检测归因于其7.4×109Ω·cm的高电阻率和3.63×10-3 cm2·V-1的大载流子迁移率-寿命乘积。
更新日期:2020-01-01
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