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Freezing non-radiative recombination in high-performance CsPbBr3 single crystal x-ray detector

文献类型：期刊论文

作者Zhao, Xiao1,2,3; Wang, Shimao1,2; Song, Yanan1,2; Aoki, Toru4; Gnatyuk, Volodymyr5; You, Libing6; Deng, Zanhong1,2; Tao, Ruhua1,2; Fang, Xiaodong6; Meng, Gang1,2
刊名APPLIED PHYSICS LETTERS
出版日期2024-08-19
卷号125
ISSN号0003-6951
DOI10.1063/5.0224223
通讯作者Wang, Shimao(shmwang@aiofm.ac.cn) ; Fang, Xiaodong(fangxiaodong@sztu.edu.cn) ; Meng, Gang(menggang@aiofm.ac.cn)
英文摘要Though CsPbBr3 single crystals (SCs) possess intriguing photoelectronic properties for x/gamma-ray detection, the serious ion migration and high thermally activated carrier concentration at room temperature (RT), typically associated with defect states in CsPbBr3 crystals, result in a high dark current and drift of baseline, hindering their potential applications. In this investigation, liquid nitrogen cooling is proposed to freeze deep-level defects in CsPbBr3 SCs, thereby suppressing the ion migrations and decreasing the thermally excited carrier concentration. Utilizing photoluminescence (PL) and time-resolved PL spectra, coupled with theoretical models for photoexcitation and photoemission processes, the freezing of deep-level defects at liquid nitrogen temperature (LNT) is confirmed, which is conducive to decreasing non-radiative recombination. At LNT, the CsPbBr3 SC exhibits a higher resistivity of 4.95 x 1011 Omega cm and a higher mobility-lifetime product of 9.54 x 10(-3) cm(2) V-1, in contrast to the RT values of 3.86 x 10(9 )Omega cm and 3.67 x 10(-3) cm(2 )V(-1), respectively. Furthermore, the x-ray detector at LNT exhibits a high sensitivity of 9309 mu C Gyair(-1) cm(-2) and an impressively low detection limit of 0.054 nGy s(-1), which offers a route for obtaining highly sensitive x-ray detectors for applications including ultra-low dose radiation imaging.
WOS关键词PEROVSKITE ; SENSITIVITY ; RESOLUTION ; TEMPERATURE ; MIGRATION ; PROGRESS ; CDTE
资助项目National Natural Science Foundation of China10.13039/501100001809[62175167] ; National Natural Science Foundation of China10.13039/501100001809[62211540009] ; National Natural Science Foundation of China10.13039/501100001809[62075223] ; National Natural Science Foundation of China[KF202304] ; State Key Laboratory of Quantum Optics and Quantum Optics Devices[SKLPDE-KF-202410] ; State Key Laboratory of Particle Detection and Electronics[JCYJ20210324120207021] ; State Key Laboratory of Particle Detection and Electronics[JSGG20220831094202005] ; State Key Laboratory of Particle Detection and Electronics[KQTD20170331115422184] ; Shenzhen Science and Technology Program[2021QN02Z552] ; Guangdong Provincial Science and Technology Program[2021ZDJS112] ; Guangdong Province Key Construction Discipline Scientific Research Ability Promotion Project[ZKYXG-2018-04] ; Key Technology Research Project of Chinese Academy of Sciences
WOS研究方向Physics
语种英语
WOS记录号WOS:001297358200006
出版者AIP Publishing
资助机构National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; State Key Laboratory of Quantum Optics and Quantum Optics Devices ; State Key Laboratory of Particle Detection and Electronics ; Shenzhen Science and Technology Program ; Guangdong Provincial Science and Technology Program ; Guangdong Province Key Construction Discipline Scientific Research Ability Promotion Project ; Key Technology Research Project of Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/135025]  
专题中国科学院合肥物质科学研究院
通讯作者Wang, Shimao; Fang, Xiaodong; Meng, Gang
作者单位1.Chinese Acad Sci, Adv Laser Technol Lab Anhui Prov, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
4.Shizuoka Univ, Res Inst Elect, Hamamatsu 4328011, Japan
5.Natl Acad Sci Ukraine, VE Lashkaryov Inst Semicond Phys, UA-03028 Kyiv, Ukraine
6.Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Xiao,Wang, Shimao,Song, Yanan,et al. Freezing non-radiative recombination in high-performance CsPbBr3 single crystal x-ray detector[J]. APPLIED PHYSICS LETTERS,2024,125.
APA Zhao, Xiao.,Wang, Shimao.,Song, Yanan.,Aoki, Toru.,Gnatyuk, Volodymyr.,...&Meng, Gang.(2024).Freezing non-radiative recombination in high-performance CsPbBr3 single crystal x-ray detector.APPLIED PHYSICS LETTERS,125.
MLA Zhao, Xiao,et al."Freezing non-radiative recombination in high-performance CsPbBr3 single crystal x-ray detector".APPLIED PHYSICS LETTERS 125(2024).

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来源：合肥物质科学研究院

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