人工晶体学报2026，Vol.55Issue(1)：58-67,10.DOI:10.16553/j.cnki.issn1000-985x.2025.0156
Cu+或Ag+共掺杂LaBr3∶Ce晶体的生长及性能研究
Growth and Properties of Cu+or Ag+Co-Doped LaBr3∶Ce Crystals
摘要
Abstract
LaBr∶3 Ce crystals are recognized as representative high-performance scintillators due to their outstanding properties such as high light yield,excellent energy resolution,and fast decay time,demonstrating significant application potential in fields including nuclear radiation detection and medical imaging.In this study,Cu+or Ag+co-doped LaBr3∶Ce crystals were successfully grown by the Bridgman method,and the effects of different Cu+or Ag+co-doping concentrations on their luminescence and scintillation performances of LaBr3∶Ce crystals were systematically investigated.The results show that under both photoluminescence and X-ray excitation,neither Cu+nor Ag+co-doping alters the luminescence mechanism of the crystals.All samples exhibit the 5d→4f characteristic emission of Ce³⁺ in the range of 325～425 nm.In terms of scintillation performance,the light yields and energy resolutions of Cu⁺ co-doped crystals are comparable to those of undoped sample.Specifically,the LaBr3∶Ce,0.2%Cu crystal achieves an energy resolution of 2.8%at 662 keV.In contrast,Ag⁺ co-doping leads to a significant decrease in the light yield of crystal.The LaBr3∶Ce,0.2%Ag crystal exhibits an energy resolution deteriorated to 4.5%at 662 keV.These findings indicate that neither Cu⁺ nor Ag⁺ co-doping strategy improves the scintillation performance of LaBr3∶Ce,providing an important experimental guidance for the selection of future doping strategies in this system.关键词
闪烁晶体/LaBr3∶Ce/共掺杂/坩埚下降法/光产额/能量分辨率Key words
scintillation crystal/LaBr3∶Ce/co-doping/Bridgman method/light yield/energy resolution分类
数理科学引用本文复制引用
赵美丽,宗蕾,王谦,李云云,张春生,吴云涛..Cu+或Ag+共掺杂LaBr3∶Ce晶体的生长及性能研究[J].人工晶体学报,2026,55(1):58-67,10.基金项目
国家重点研发计划(2022YFB3503600) （2022YFB3503600）
