Great Enhancing Overall Performances of YSO:Ce Scintillation Crystals by Ni Codoping

• DOI: 10.1021/acs.cgd.4c00799
• Publication Date: 2024-08-23T15:15:16Z
• Authors: Zhe Zhang; Shuwen Zhao; Zhongjun Xue; Junjie Shi; Aochen Zhang; Xiang Zheng; Chengyi Li; Peng Qiu; Hongsheng Shi; JiaWen Xiao; Dongzhou Ding

Cerium-doped yttrium oxyorthosilicate (YSO:Ce) scintillation crystals are widely used in mixed radiation field detection, radioactive isotope monitoring, and other fields due to their excellent properties low cost. However, the poor coincidence time resolution severely limits further promotion. In order resolve this problem, work first designed conducted research on Ni2+-codoped YSO:Ce crystals, a series of YSO:Ce,xNi (x = 0, 0.3, 0.6, 1.5 atom %) were grown using Czochralski method. It is found that codoping with 0.6 % Ni2+ can improve overall performances crystals. particular, ratio light output decay significantly improved by 71%, which currently best optimization result reported orthosilicate-based systems. addition, afterglow level has been optimized 2 orders magnitude, energy from 9.2% 6.7%, greatly enhancing its potential commercial applications. This mainly attributed codoping, reducing concentration carrier traps emission proportion slow-emitting center Ce2, introducing fast Ce4+ into Based experimental results, possible mechanisms above phenomenon discussed article.