闪烁体
放射发光
材料科学
钙钛矿(结构)
光电子学
粒子探测器
有源矩阵
响应度
辐射
光学
探测器
纳米技术
光电探测器
物理
结晶学
化学
图层(电子)
薄膜晶体管
作者
Junhua Shen,Rong Jia,Yang Hu,Weiguang Zhu,Kun Yang,Mingxin Li,Dong Zhao,Jian Shi,Jie Lian
标识
DOI:10.1021/acsami.4c03124
摘要
Cost-effective bulk scintillators with high density, large-area, and long-term stability are desirable for high-energy radiation detections. Conventional bulk polycrystalline or single-crystal scintillators are generally synthesized by high-temperature approaches, and it is challenging to realize simultaneously high detectivity/responsivity, spatial resolution, and rapid time response. Here, we report the cold sintering of bulk scintillators (at 90 °C) based on an "emitter-in-matrix" principle, in which emissive CsPbBr3 nanocrystals are embedded in a durable and transparent Cs4PbBr6 matrix. These bulk scintillators exhibit high light yield (33,800 photons MeV–1), low detection limit (79 nGyair s–1), fast decay time (9.8 ns), and outstanding spatial resolution of 8.9 lp mm–1 to X-ray radiation and an energy resolution of 19.3% for γ-ray (59.6 keV) detection. The composite scintillator also shows exceptional stability against environmental degradation and cyclic X-ray radiation. Our results demonstrate a cost-effective strategy for developing perovskite-based bulk transparent scintillators with exceptional performance and high radioluminescence stability for high-energy radiation detection and imaging.
科研通智能强力驱动
Strongly Powered by AbleSci AI