| BaFBr:Eu2+中的新型色心及其光激励发光 |
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| 引用本文： | 陈伟,苏勉曾.BaFBr:Eu2+中的新型色心及其光激励发光[J].发光学报,1993,14(2):119-123. |
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| 作者姓名： | 陈伟 苏勉曾 |
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| 作者单位： | 北京科技大学材料物理系, 北京 100871 |
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| 摘 要： | 本文报导了BaFBr:EU2+晶体中的新型色心,即F2,F3和F4心.F2、F3和F4的吸收带分别位于670—715nm,810—900nm和970—995nm.它们是由F心的凝聚作用而形成的缔合中心.由于这些色心比F心稳定,且它们的吸收带偏离Eu2+的发射波长(390nm)更远,故更适合于BaFBr:Eu2+光激励发光的研究和开发.
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| 关 键 词： | BaFBr:Eu2+ 光激励发光 色心 |
| 收稿时间： | 1992-11-09 |
NEW COLOR CENTERS AND PHOTOSTIMULATED LUMINESCENCE(PSL) OF BaFBr:Eu~(2+) |
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| Chen Wei Su Mianzeng.NEW COLOR CENTERS AND PHOTOSTIMULATED LUMINESCENCE(PSL) OF BaFBr:Eu~(2+)[J].Chinese Journal of Luminescence,1993,14(2):119-123. |
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| Authors: | Chen Wei Su Mianzeng |
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| Institution: | Department of Chemistry, Beijing University, Beijing 100871 |
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| Abstract: | New color centers,F2,F3 and F4 in BaFBr:Eu2+ crystal are reported in this paper. Their absorption bands are in 810-900nm 670-715nm, and 970-995nm respectively.They are F aggregates formed by the association of F centers. According to the present study,F2, F3 and F4 centers are more stable than F centers and the deviation of stimulation bands from the emission band of Eu2 + is farther than that of F bands from the emission band of Eu2 + . Therefore F2, F3 and F4 centers are more efficient for X-ray storage. |
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| Keywords: | BaFBr:Eu2+ photostimulated luminescence color centers |
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