材料科学
闪烁体
卤化物
钙钛矿(结构)
α粒子
铅(地质)
阿尔法(金融)
粒子(生态学)
化学工程
核物理学
无机化学
光学
探测器
护理部
化学
患者满意度
工程类
地质学
物理
地貌学
海洋学
医学
结构效度
作者
Sumit Chhangani,Monu Kumar,R.M. Sahani,Anuradha Bera,Arun Pandya
标识
DOI:10.1016/j.mtcomm.2022.104303
摘要
Solid-state synthesis of perovskites has recently drawn attraction in the fabrication of high purity lead halide perovskites with high throughput, ease in fabrication and cost-effective manner. In this study, we synthesized CsPbBr 3 perovskites by manually grinding the constituent salts and fabricated their corresponding polystyrene-CsPbBr 3 composite films with concentrations ranging from 5 – 50% (w/w) at room temperature by solvent casting. The perovskite phase was confirmed from the XRD studies. The bandgap from absorption spectra was estimated to be 2.26 eV, close to the corresponding PL emission ~ 550 nm. These composite films were evaluated for their alpha radiation response. Films with 25% perovskite loading exhibit 28% detection efficiency and minimum detection activity of 0.29 Bq. We report an excellent alpha response from the lead halide perovskite-based scintillator prepared through the facile synthesis technique.
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