| Luminescence studies of MBrCl： Eu2＋ （M=Ca, Sr, Ba） |
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| 引用本文： | 孟宪国,王永生,何大伟.Luminescence studies of MBrCl： Eu2＋ （M=Ca, Sr, Ba）[J].中国稀土学报(英文版),2009,27(2):316-319. |
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| 作者姓名： | 孟宪国 王永生 何大伟 |
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| 作者单位： | Institute of Optoelectronic Technology,Ministry of Railway,Key Lab Laboratory of Materials for Information Storage and Display,Beijing Jiaotong University,Beijing 100044,China
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| 基金项目： | 国家自然科学基金，Beijing Municipal Science & Technology Commission Foundation，Foundation of Beijing Jiaotong University |
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| 摘 要： |
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| 关 键 词： | 光激励发光 X射线照射 钙 锶 差分吸收光谱 还原性气氛 发光二极管 气体激光器 |
| 收稿时间： | 14 May 2008 |
Luminescence studies of MBrCl:Eu2+ (M=Ca, Sr, Ba) |
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| MENG Xianguo,WANG Yongsheng,HE Dawei.Luminescence studies of MBrCl:Eu2+ (M=Ca, Sr, Ba)[J].Journal of Rare Earths,2009,27(2):316-319. |
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| Authors: | MENG Xianguo WANG Yongsheng HE Dawei |
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| Affiliation: | Institute of Optoelectronic Technology, Ministry of Railway, Key Lab Laboratory of Materials for Information Storage and Display, BeUing Jiaotong University, Beijing100044, China |
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| Abstract: | Europium doped MBrCl (M=Ca, Sr, and Ba) phosphors were prepared by solid state reaction in reductive atmosphere. Photolu-minescence (PL), photostimulated luminescence (PSL) after X-ray irradiation and optical absorption studies of MBrCl:Eu2+ (M=Ca, Sr, and Ba) revealed that: (1) blue light emission, under the excitation of 300 nm, was observed in all these phosphors; (2) the shape of the emission spectra in CaBrCl:Eu2+ could be changed by varying the bromine/chlorine ratio during synthesis, while that in SrBrCl:Eu2+ and BaBrCl:Eu2+ showed no change; and (3) PSL was observed in SrBrCl:Eu2+ and BaBrCI:Eu2+ after X-ray irradiation. Difference absorption spectrum (DAS) in SrBrCl:Eu2+ showed two broad bands centered at about 470 and 570 nm, and DAS in BaBrCI:Eu2+ showed two bands at about 550 and 675 nm, respectively. This enabled the use of He-Ne laser (633 nm) or even semiconductor light-emitting diodes (LED) instead of gas lasers for photostimulation. |
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| Keywords: | photostimulated luminescence optical storage rare earths |
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