零维钙钛矿结构Cs3Cu2Br5单晶的生长和X射线探测性能

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (10): 1919-1924.

零维钙钛矿结构Cs₃Cu₂Br₅单晶的生长和X射线探测性能

王谦^1,2, 王京康^2,3, 成双良², 任国浩², 朱兴文¹, 吴云涛²

1.上海大学材料科学与工程学院,上海 200444;
2.中国科学院上海硅酸盐研究所,上海 200050;
3.上海理工大学材料科学与工程学院,上海 200082

收稿日期:2021-09-01 出版日期:2021-10-15 发布日期:2021-11-24
通讯作者: 吴云涛,博士,研究员。E-mail:ytwu@mail.sic.ac.cn
作者简介:王谦(1994—),男,陕西省人,硕士研究生。E-mail:wangqian_12345@foxmai.com。吴云涛(1984—),中国科学院上海硅酸盐研究所特聘研究员,博士生导师。主要从事闪烁晶体材料研究。入选上海市高层次人才、中国科学院稳定支持基础研究领域青年团队、中国科学院青年创新促进会。任上海市硅酸盐学会理事,IEEE Transactions on Nuclear Science副主编,Radiation Detection Technology and Method、《中国稀土学报》《发光学报》《人工晶体学报》青年编委和中国稀土学会稀土晶体青年专委会委员。2017年获IEEE核与等离子体科学学会青年科学家奖。
基金资助:
国家自然科学基金(11975303);上海市自然科学基金(20ZR1473900);上海市高新技术领域项目(20511107400)

Crystal Growth and X-Ray Detection Performance of 0D Cs₃Cu₂Br₅ Single Crystal Perovskite

WANG Qian^1,2, WANG Jingkang^2,3, CHENG Shuangliang², REN Guohao², ZHU Xingwen¹, WU Yuntao²

1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
3. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200082, China

Received:2021-09-01 Online:2021-10-15 Published:2021-11-24

摘要/Abstract

摘要： 金属卤化物低维钙钛矿具有高效的发光性能,并且作为闪烁体在辐射探测领域表现出极大的潜力。本文采用布里奇曼坩埚下降法生长出全无机零维钙钛矿结构Cs₃Cu₂Br₅单晶。研究了Cs₃Cu₂Br₅的光学吸收、光致激发和发射,时间分辨光致发光和以及X射线探测性能。Cs₃Cu₂Br₅晶体结构为正交晶系,空间群为Pnma。在X射线激发下,Cs₃Cu₂Br₅晶体具有峰值约为467 nm的宽带发射,该发射来自自陷激子发射。Cs₃Cu₂Br₅的稳态光产额约为4 000 ph./MeV,且X射线余辉性能表现与BGO晶体相当。

关键词: 零维钙钛矿, 闪烁体, Cs₃Cu₂Br₅单晶, 坩埚下降法, X射线探测, 自陷激子

Abstract: Metal halides low-dimensional perovskites have highly efficient luminescent properties and shown great potential as scintillators for radiation detection applications. Herein,single crystal of all-inorganic zero-dimensional Cs₃Cu₂Br₅ was grown by the Bridgman technique. The optical absorption, photoluminescence emission and excitation, time-resolved photoluminescence, and X-ray detection performance of Cs₃Cu₂Br₅ were measured. The Cs₃Cu₂Br₅ crystallized into orthorhombic system with a space group of Pnma. Under the excitation of X-ray, Cs₃Cu₂Br₅ crystal has a broad emission peaking at about 467 nm originated from self-trapped exciton emission. The steady state light yield of Cs₃Cu₂Br₅ is about 4 000 ph./MeV and its afterglow performance is comparable to that of BGO crystal.

Key words: zero-dimensional perovskite, scintillator, Cs₃Cu₂Br₅ single crystal, Bridgman method, X-ray detection, self-trapped exciton

中图分类号:

王谦, 王京康, 成双良, 任国浩, 朱兴文, 吴云涛. 零维钙钛矿结构Cs₃Cu₂Br₅单晶的生长和X射线探测性能[J]. 人工晶体学报, 2021, 50(10): 1919-1924.

WANG Qian, WANG Jingkang, CHENG Shuangliang, REN Guohao, ZHU Xingwen, WU Yuntao. Crystal Growth and X-Ray Detection Performance of 0D Cs₃Cu₂Br₅ Single Crystal Perovskite[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1919-1924.

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零维钙钛矿结构Cs₃Cu₂Br₅单晶的生长和X射线探测性能

Crystal Growth and X-Ray Detection Performance of 0D Cs₃Cu₂Br₅ Single Crystal Perovskite

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