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作者:

Niu, Xiaowei (Niu, Xiaowei.) | Xiao, Jiawen (Xiao, Jiawen.) (学者:肖家文) | Lou, Bibo (Lou, Bibo.) | Yan, Zhengguang (Yan, Zhengguang.) | Zhou, Quan (Zhou, Quan.) | Lin, Taifeng (Lin, Taifeng.) | Ma, Chonggeng (Ma, Chonggeng.) | Han, Xiaodong (Han, Xiaodong.)

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EI Scopus SCIE

摘要:

In recent years, copper-based halide scintillators have attracted tremendous attention due to their excellent luminescent properties and low manufacturing costs. Herein, a high-performance and low-cost Cs5Cu3Cl6I2 scintillator is prepared by simple mechanical grinding. The mixed-halide Cs5Cu3Cl6I2 phosphor exhibits a blue emission centered at 475 nm with a large stokes shift, originating from the self-trapped exciton emission of Cu sites. The photoluminescence quantum yield (PLQY) of Cs5Cu3Cl6I2 can be increased to 88.4% from 20.4% by the efficient suppression of the anion vacancy defects. In addition, the Cs5Cu3Cl6I2 scintillator shows a high steady-state X-ray to light conversion efficiency of about 57000 photons/MeV, good X-ray linear response, and low detection limit of 71.9 nGyair/s. The X-ray imaging results based on theCs(5)Cu(3)Cl(6)I(2) scintillator screen display a high spatial resolution of 9.0 line-pairs per millimeter (lp/mm). Furthermore, Cs5Cu3Cl6I2 exhibits good radia-tion stability under a total dose of 113.58 Gyair. Overall, the Cs5Cu3Cl6I2 scintillator prepared by mechanical grinding method has the advantages of low cost, high efficiency, and good radiation resistance, suggesting its huge potential in X-ray detection and imaging.

关键词:

Blue emission Scintillator Mechanochemical synthesis Copper halides X-ray imaging

作者机构:

  • [ 1 ] [Niu, Xiaowei]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 2 ] [Xiao, Jiawen]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 3 ] [Yan, Zhengguang]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 4 ] [Zhou, Quan]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 5 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Fac Mat & Mfg, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 6 ] [Lou, Bibo]Chongqing Univ Posts & Telecommun, Sch Optoelect Engn, Chongqing 400065, Peoples R China
  • [ 7 ] [Ma, Chonggeng]Chongqing Univ Posts & Telecommun, Sch Optoelect Engn, Chongqing 400065, Peoples R China
  • [ 8 ] [Lou, Bibo]Chongqing Univ Posts & Telecommun, BUL Innovat Inst, CQUPT, Chongqing 400065, Peoples R China
  • [ 9 ] [Ma, Chonggeng]Chongqing Univ Posts & Telecommun, BUL Innovat Inst, CQUPT, Chongqing 400065, Peoples R China
  • [ 10 ] [Lin, Taifeng]Beijing Univ Technol, Fac Environm & Life, Beijing 100124, Peoples R China

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来源 :

CERAMICS INTERNATIONAL

ISSN: 0272-8842

年份: 2022

期: 20

卷: 48

页码: 30788-30796

5 . 2

JCR@2022

5 . 2 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 29

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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