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首页> 外文期刊>Optical Materials >Fabrication, microstructure and luminescence properties of Cr3+ doped Lu(3)A(15)O(12) red scintillator ceramics
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Fabrication, microstructure and luminescence properties of Cr3+ doped Lu(3)A(15)O(12) red scintillator ceramics

机译：Cr3 +掺杂Lu（3）A（15）O（12）红色闪烁体陶瓷的制备，微结构和发光性能

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摘要

Cr3+ doped Lu(3)A(15)O(12) transparent ceramics were developed as a new red scintillator ceramics. These ceramics were fabricated by a solid state reaction method under vacuum sintering at temperature range of 1550 degrees C-1890 degrees C for 10 h. The doping effect of different Cr3+ concentration (0, 0.1, 0.3 and 0.5 at. %) and air annealing effect were investigated as well. The transparent ceramics (70% @1 mm in visible light range) with dense microstructure were obtained when sintered at 1890 degrees C for 10 h, the average grain size of 03 at.% Cr:LuAG was calculated to be 7 mu m. Photo-luminescence spectra revealed that there are two typical excitation bands at around 450 nm and 600 nm which were ascribed to the d-d transitions of Cr3+. 03 at. % Cr:LuAG exhibited the optimum photoluminescence intensity and fast decay. Radio luminescence under X-ray excitation indicated a characteristic Cr3+ emission peaking at 687 nm and 706 nm respectively. The Lu-Ai(3+) antisite defects related emission at around 300 nm was observed to decrease with the doping of Cr3+. The steady luminescence efficiency (XEL spectrum integral) is around 20 times of the commercial BGO crystals, more important, the broad and continuous red emission between 600 nm and 800 nm demonstrated Cr:LuAG ceramics a prospective application as new red scintillators. (C) 2017 Elsevier B.V. All rights reserved.
机译：Cr3 +掺杂的Lu（3）A（15）O（12）透明陶瓷被开发为一种新型的红色闪烁体陶瓷。这些陶瓷通过固态反应方法在1550摄氏度至1890摄氏度的温度范围内真空烧结10小时制成。还研究了不同Cr3 +浓度（0、0.1、0.3和0.5 at。％）的掺杂效果和空气退火效果。在1890℃下烧结10 h，可获得具有致密微观结构的透明陶瓷（可见光范围内70％@ 1 mm），计算得出03原子％Cr：LuAG的平均晶粒尺寸为7μm。光致发光光谱表明，在大约450 nm和600 nm处有两个典型的激发带，它们归因于Cr3 +的d-d跃迁。 03 at。 ％Cr：LuAG表现出最佳的光致发光强度和快速衰减。在X射线激发下的放射发光表明Cr3 +的发射峰分别在687 nm和706 nm处达到峰值。 Lu-Ai（3+）与位点缺陷相关的发射在300 nm附近随着Cr3 ​​+的掺杂而减少。稳定的发光效率（XEL光谱积分）约为商用BGO晶体的20倍，更重要的是，在600 nm至800 nm之间的宽而连续的红色发射证明Cr：LuAG陶瓷有望用作新型红色闪烁体。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Optical Materials》 |2017年第4期|487-493|共7页
  • 作者

    Shi Yun; Zhao Yu; Liu Qiang; Cao Maoqing; Ma Peng; Chen Haohong; Liu Qian; Li Jiang;

  • 作者单位

    Chinese Acad Sci Shanghai Inst Ceram Key Lab Transparent & Optofunct Adv Inorgan Mat Shanghai 200050 Peoples R China;

    Chinese Acad Sci Shanghai Inst Ceram Key Lab Transparent & Optofunct Adv Inorgan Mat Shanghai 200050 Peoples R China|Jiangsu Univ Sch Mat Sci & Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Mat Sci & Engn Zhenjiang 212013 Peoples R China;

    Chinese Acad Sci Shanghai Inst Ceram Key Lab Transparent & Optofunct Adv Inorgan Mat Shanghai 200050 Peoples R China|Shanghai Inst Technol Sch Mat Sci & Engn Inst Crystal Growth Shanghai 201418 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Red scintillator; Cr3+:LuAG transparent ceramics; Vacuum sintering; Antisite defect;

    机译：红色闪烁体;Cr3 +：LuAG透明陶瓷;真空烧结;反位缺陷;

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