闪烁体
余辉
放射发光
闪烁
材料科学
微晶
光学
悬空债券
产量(工程)
Crystal(编程语言)
结晶学
光电子学
物理
化学
探测器
天体物理学
复合材料
伽马射线暴
硅
计算机科学
冶金
程序设计语言
作者
Haodi Wu,Qian Wang,Ao Zhang,Guangda Niu,M. Nikl,Ming Chen,Jinsong Zhu,Zhengyang Zhou,Yi‐Yang Sun,Guangjun Nan,Guohao Ren,Yuntao Wu,Jiang Tang
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2023-07-28
卷期号:9 (30)
被引量:11
标识
DOI:10.1126/sciadv.adh1789
摘要
Fast and high-resolution x-ray imaging demands scintillator films with negligible afterglow, high scintillation yield, and minimized cross-talk. However, grain boundaries (GBs) are abundant in polycrystalline scintillator film, and, for current inorganic scintillators, detrimental dangling bonds at GBs inevitably extend radioluminescence lifetime and increase nonradiative recombination loss, deteriorating afterglow and scintillation yield. Here, we demonstrate that scintillators with one-dimensional (1D) crystal structure, Cs 5 Cu 3 Cl 6 I 2 explored here, possess benign GBs without dangling bonds, yielding nearly identical afterglow and scintillation yield for single crystals and polycrystalline films. Because of its 1D crystal structure, Cs 5 Cu 3 Cl 6 I 2 films with desired columnar morphology are easily obtained via close space sublimation, exhibit negligible afterglow (0.1% at 10 ms) and high scintillation yield (1.2 times of CsI:Tl). We have also demonstrated fast x-ray imaging with 27 line pairs mm −1 resolution and frame rate up to 33 fps, surpassing most existing scintillators. We believe that the 1D scintillators can greatly boost x-ray imaging performance.
科研通智能强力驱动
Strongly Powered by AbleSci AI