对三联苯有机晶体的生长及性能

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (10): 1979-1983.

对三联苯有机晶体的生长及性能

许文斌^1,2, 王海丽¹, 李辉¹, 周振翔¹, 石爽爽¹, 陈建荣¹, 马捷²

1.中材人工晶体研究院有限公司,北京 100018;
2.北京工业大学材料与制造学部,北京 100049

收稿日期:2021-09-09 出版日期:2021-10-15 发布日期:2021-11-24
通讯作者: 陈建荣,教授级高级工程师。E-mail:crystchen@163.com
作者简介:许文斌(1995—),男,山东省人,硕士研究生。E-mail:984794743@qq.com。陈建荣,男,博士,中材人工晶体研究院教授级高级工程师,现兼任《人工晶体学报》编委,全国人工晶体标准化晶体委员会秘书长。长期从事人工晶体材料与器件研究与开发工作,先后开展了分光晶体TAM,紫外滤波晶体KNSH,非线性光学晶体KDP、KTP和CLBO,电光晶体RTP等晶体生长,RTP电光开关、周期极化晶体PPKTP等器件制备工作,作为项目/课题负责人承担科技部、国防科工局、国家发改委和北京市、中关村等科研项目20多项,在国内外刊物发表学术论文30多篇,授权国家发明专利7项,制修订国标/国军标4项、行标3项。获中国建材集团科技进步奖二等奖,享受国务院政府特殊津贴。

Growth and Properties of p-Terphenyl Organic Crystals

XU Wenbin^1,2, WANG Haili¹, LI Hui¹, ZHOU Zhenxiang¹, SHI Shuangshuang¹, CHEN Jianrong¹, MA Jie²

1. Sinoma Synthetic Crystals Co., Ltd., Beijing 100018, China;
2. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100049, China

Received:2021-09-09 Online:2021-10-15 Published:2021-11-24

摘要/Abstract

摘要： 对三联苯是一种常见的有机闪烁剂,通常用作闪烁计数器的发光材料。对三联苯闪烁晶体具有对中子探测效率高以及不易潮解等特性,这使其在实际应用中具有广阔的前景。本文采用坩埚下降法,使用单层安瓿成功生长出φ12 mm×30 mm对三联苯晶体。在生长开始前通过差热分析,确定晶体的生长温度。生长完成后测试了晶体粉末的X射线衍射谱、摇摆曲线、红外光谱、荧光光谱和拉曼光谱。X射线衍射结果表明,生长的晶体为纯对三联苯相。从摇摆曲线结果可以看出,生长晶体质量良好。红外和拉曼分析结果显示,峰位并没有出现明显的偏移,表明晶体中杂质含量较少并未引起晶体分子化学结构的变化。荧光光谱没有杂质峰的出现也说明对三联苯晶体存在较少杂质或晶格缺陷。

关键词: 对三联苯, 坩埚下降法, 晶体生长, 有机晶体, 闪烁晶体, 单层安瓿, 辐射探测

Abstract: p-Terphenyl is a common organic scintillator, which is usually used as the luminescent material in scintillation counters. The p-terphenyl scintillation crystal has the characteristics of high neutron detection efficiency and not easy to deliquesce, which makes it have a broad prospect in practical applications. In this paper, the vertical Bridgman method was used, and the φ12 mm×30 mm p-terphenyl scintillation crystal has grown using a single layer ampoule. The growth temperature of the crystals was determined by differential thermal test. The crystalline powder were measured by X-ray diffraction spectra, rocking curve, FT-IR spectra, fluorescence spectra and Raman spectra. The X-ray diffraction results show that the grown crystals are pure p-terphenyl phase. The rocking curve results show that the quality of the p-terphenyl crystal is good. FT-IR and Raman results show no significant shift in the peak positions, indicating that the low content of impurities in the crystals and no changement in the molecular chemical structure of the crystals. The absence of impurity peaks in the fluorescence spectra also indicates the presence of fewer impurities or crystal lattice defects in the p-terphenyl scintillation crystal.

Key words: p-terphenyl, vertical Bridgman method, crystal growth, organic crystal, scintillation crystal, single layer ampoule, radiation detection

中图分类号:

O625.13

许文斌, 王海丽, 李辉, 周振翔, 石爽爽, 陈建荣, 马捷. 对三联苯有机晶体的生长及性能[J]. 人工晶体学报, 2021, 50(10): 1979-1983.

XU Wenbin, WANG Haili, LI Hui, ZHOU Zhenxiang, SHI Shuangshuang, CHEN Jianrong, MA Jie. Growth and Properties of p-Terphenyl Organic Crystals[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1979-1983.

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