F/Cl比对PbFCl晶体生长和发光性能的影响

doi:10.3724/SP.J.1077.2014.13269

无机材料学报 ›› 2014, Vol. 29 ›› Issue (2): 162-166.DOI: 10.3724/SP.J.1077.2014.13269 CSTR: 32189.14.SP.J.1077.2014.13269

F/Cl比对PbFCl晶体生长和发光性能的影响

张国庆^1,2, 杨帆², 吴云涛², 孙丹丹², 商珊珊², 任国浩²

(1. 中国地质大学(武汉), 武汉430074; 2. 中国科学院上海硅酸盐研究所, 上海201800)

收稿日期:2013-05-16 修回日期:2013-07-17 出版日期:2014-02-20 网络出版日期:2014-01-17
作者简介:张国庆(1988–), 男, 硕士研究生. E-mail: zzhangguoqing@gmail.com
基金资助:
国家自然科学基金青年基金(51102254); 国家自然科学基金(91022028)

Influence of F/Cl Ratio on the Crystal Growth and Luminescence Properties of PbFCl Crystals

ZHANG Guo-Qing^1,2, YANG Fan², WU Yun-Tao², SUN Dan-Dan², SHANG Shan-Shan², REN Guo-Hao²

(1. China University of Geosciences, Wuhan 430074, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China)

Received:2013-05-16 Revised:2013-07-17 Published:2014-02-20 Online:2014-01-17
About author:ZHANG Guo-Qing. E-mail: zzhangguoqing@gmail.com
Supported by:
National Natural Science Foundation of China (51102254) ; National Natural Science Foundation of China (91022028)

摘要/Abstract

摘要： PbFCl是一种具有双读出功能的闪烁晶体, 性能优异但制备困难。本研究通过调整PbFCl原料组份, 探索F/Cl摩尔比(F/Cl)对晶体生长、透光和发光性能的影响。实验结果表明, 原料配方中适量富Cl有利于生长出透明晶体, 但会加剧解理。组分偏析会使晶胞参数略有改变, 而对物相没有影响。X射线激发光谱发光峰位不随F/Cl比改变而移动。透过光谱显示PbCl₂组份增加, 紫外吸收边会从300 nm蓝移至275 nm附近, F/Cl变化不引入新的吸收峰, EWT计算表明F/Cl=1:1.25时晶体的双读出性能最好。

关键词: PbFCl, 组份偏析, 发光, 透光率

Abstract: Lead fluoride chloride (PbFCl) crystal has been proposed for dual readout application as it has excellent properties. In this study, the PbFCl crystals were grown with different F/Cl ratios in the raw materials by modified Bridgman method. It is observed that excessive PbCl2 in the raw materials is helpful to grow transparent crystals, meanwhile it may enhance the cleavage. The excessive PbF₂ or PbCl₂ only modifies the cell parameters, not the phase of PbFCl crystal. The emission peaks in X-ray excited luminescence spectra do not depend on the F/Cl ratio in the raw materials. The UV cut-off edge of transmittance shifts from 300 nm to 275 nm when extra PbCl₂ was added. According to the emission weighted transmittance of the samples, the crystals grown with F/Cl=1:1.25 in the raw materials show the best dual readout properties among all the samples.

Key words: PbFCl, component segregation, luminescence, transmittance

中图分类号:

O734

张国庆, 杨帆, 吴云涛, 孙丹丹, 商珊珊, 任国浩. F/Cl比对PbFCl晶体生长和发光性能的影响[J]. 无机材料学报, 2014, 29(2): 162-166.

ZHANG Guo-Qing, YANG Fan, WU Yun-Tao, SUN Dan-Dan, SHANG Shan-Shan, REN Guo-Hao. Influence of F/Cl Ratio on the Crystal Growth and Luminescence Properties of PbFCl Crystals[J]. Journal of Inorganic Materials, 2014, 29(2): 162-166.

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F/Cl比对PbFCl晶体生长和发光性能的影响

Influence of F/Cl Ratio on the Crystal Growth and Luminescence Properties of PbFCl Crystals

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