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Influence of neutron irradiation on X-ray diffraction, Raman spectrum and photoluminescence from pyrolytic and hot-pressed hexagonal boron nitride

文献类型：期刊论文

作者Zhou, Shun8; Xu, Wen6,7,8; Xiao, Yiming8; Xiao, Huan8; Zhang, Jing7; Wang, Zhu4,5; He, Gaokui3; Liu, Jing2; Li, Yuanyuan2; Peeters, Francois M.1,6
刊名JOURNAL OF LUMINESCENCE
出版日期2023-11-01
卷号263
ISSN号0022-2313
关键词Hexagonal boron nitride Neutron irradiation X-ray diffRaction Raman spectrum Photoluminescence
DOI10.1016/j.jlumin.2023.120118
通讯作者Xu, Wen(wenxu_issp@aliyun.com) ; Xiao, Yiming(yiming.xiao@foxmail.com) ; Wang, Zhu(wangz@whu.edu.cn)
英文摘要Hexagonal boron nitride (hBN) is considered as an ideal semiconductor material for solid-state neutron detector, owing to its large neutron scattering section because of the low atomic number of B and excellent physical properties. Here we study the influence of neutron irradiation on crystal structure and on intermediate energy state (IMES) levels induced by the presence of impurities and defects in hBN. Large-size and thick pyrolytic and hot-pressed hBN (PBN and HBN) samples, which can be directly applied for neutron detector devices, are prepared and bombarded by neutrons with different irradiation fluences. The SEM and TEM are used to observe the sample difference of PBN and HBN. X-ray diffraction and Raman spectroscopy are applied to examine the influence of neutron irradiation on lattice structures along different crystal directions of PBN and HBN samples. Photoluminescence (PL) is employed to study the effect of neutron irradiation on IMESs in these samples. We find that the neutron irradiation does not alter the in-plane lattice structures of both PBN and HBN samples, but it can release the inter-layer tensions induced by sample growth of the PBN samples. Interestingly and surprisingly, the neutron irradiation does not affect the IMES levels responsible for PL generation, where PL is attributed mainly from phonon-assisted radiative electron-hole coupling for both PBN and HBN samples. Furthermore, the results indicate that the neutron irradiation can weaken the effective carrier-phonon coupling and exciton transitions in PBN and HBN samples. Overall, both PBN and HBN samples show some degree of the resistance to neutron irradiation in terms of these basic physical properties. The interesting and important findings from this work can help us to gain an in-depth understanding of the influence of neutron irradiation on basic physical properties of hBN materials. These effects can be taken into account when designing and applying the hBN materials for neutron detectors.
WOS关键词OPTICAL-PROPERTIES ; CRYSTALS
资助项目National Natural Science foundation of China[U2067207] ; National Natural Science foundation of China[U2230122] ; National Natural Science foundation of China[12004331] ; National Natural Science foundation of China[11975169] ; Shenzhen Science and Technology Program[KQTD20190929173954826]
WOS研究方向Optics
语种英语
出版者ELSEVIER
WOS记录号WOS:001077086300001
资助机构National Natural Science foundation of China ; Shenzhen Science and Technology Program
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/132600]  
专题中国科学院合肥物质科学研究院
通讯作者Xu, Wen; Xiao, Yiming; Wang, Zhu
作者单位1.Univ Antwerp, Dept Phys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
2.Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
3.China Inst Atom Energy, Beijing 102413, Peoples R China
4.Wuhan Univ, Sch Phys & Technol, Key Lab Artificial Micro & Nanostruct, Minist Educ China, Wuhan 430072, Peoples R China
5.Hubei Univ Sci & Technol, Sch Nucl Technol Chem & Biol, Hubei Key Lab Radiat Chem & Funct Mat, Xianning 437100, Peoples R China
6.Micro Opt Instruments Inc, Shenzhen 518118, Peoples R China
7.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
8.Yunnan Univ, Sch Phys & Astron, Yunnan Key Lab Quantum Informat, Kunming 650504, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Shun,Xu, Wen,Xiao, Yiming,et al. Influence of neutron irradiation on X-ray diffraction, Raman spectrum and photoluminescence from pyrolytic and hot-pressed hexagonal boron nitride[J]. JOURNAL OF LUMINESCENCE,2023,263.
APA Zhou, Shun.,Xu, Wen.,Xiao, Yiming.,Xiao, Huan.,Zhang, Jing.,...&Peeters, Francois M..(2023).Influence of neutron irradiation on X-ray diffraction, Raman spectrum and photoluminescence from pyrolytic and hot-pressed hexagonal boron nitride.JOURNAL OF LUMINESCENCE,263.
MLA Zhou, Shun,et al."Influence of neutron irradiation on X-ray diffraction, Raman spectrum and photoluminescence from pyrolytic and hot-pressed hexagonal boron nitride".JOURNAL OF LUMINESCENCE 263(2023).

入库方式： OAI收割

来源：合肥物质科学研究院

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