Efficient production of ligand-free microscintillators at gram-scale for high-resolution X-ray luminescence imaging  

作　　者：Hao Jiang Qihao Chen Hongyu Wang Tingting Wu Jianwei Gong Zhenzhen Zhang Qiushui Chen Huanghao Yang Lili Xie 

机构地区：[1]New Cornerstone Science Laboratory,MOE Key Laboratory for Analytical Science of Food Safety and Biology,College of Chemistry,Fuzhou University,Fuzhou 350108,China [2]School of Public Health,Fujian Medical University,Fuzhou 350108,China [3]Joint School of National University of Singapore and Tianjin University,Fuzhou International Campus of Tianjin University,Fuzhou 350207,China [4]Beijing National Laboratory for Molecular Sciences,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China

出　　处：《Chinese Chemical Letters》2024年第3期554-558,共5页中国化学快报（英文版）

基　　金：the National Key Research&Development Program of China(Nos.2020YFA0709900,2020YFA0210800);the National Natural Science Foundation of China(Nos.22027805,62134003,22104016);the Natural Science Foundation of Fujian Province(Nos.2022J01709,2023J01384);the Major Project of Science and Technology of Fujian Province(No.2020HZ06006)。

摘　　要：The efficient production of high-quality scintillators with long radioluminescence afterglow is crucial for high-performance X-ray luminescence extension imaging.However,scaling-up the synthesis of ligand-free scintillators to fabricate large-area X-ray imaging screens for industrial applications remains a challenge.In this study,we report an efficient method to synthesize ligand-free,lanthanide-doped microscintillators by a one-pot reaction via the concentrated hydrothermal method.The as-synthesized microscintillators exhibit prolonged persistent radioluminescence for up to 30 days after X-ray exposure and remain high stability in air or water for more than 18 months without deterioration.Monte Carlo simulations indicate that the size effect is responsible for the excellent afterglow performance of the microscintillators.We employ these high-quality lanthanide-doped microscintillators to fabricate a large-area X-ray imaging detector using a blade-coating method,a spatial resolution of 24.9 lp/mm for X-ray imaging.Our study offers a solution for scaling-up the synthesis of low-cost microscintillators for practical applications.

关 键 词：Microscintillators NaLuF_(4):Tb^(3+) AFTERGLOW X-ray detector X-ray luminescence imaging 

分 类 号：O657.34[理学—分析化学]