| 五磷酸铈晶体中Ln3+对Ce3+发光强度的影响 |
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| 引用本文： | 洪广言,越淑英.五磷酸铈晶体中Ln3+对Ce3+发光强度的影响[J].发光学报,1986,7(2):200-206. |
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| 作者姓名： | 洪广言 越淑英 |
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| 作者单位： | 中国科学院长春应用化学研究所 |
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| 摘 要： | 采用蒸发溶液法生长出一系列Ce0.9Ln0.1P5O14晶体。研究了晶体中Ln3+对Ce3+发光强度的影响。观察到,La3+,Lu3+和Y3+起稀释作用,使Ce3+的发光强度降低;加入一定量的Pr3+或Gd3+能使Ce3+的发光增强;Nd3+,Sm3+、Tb3+、Dy3+、Ho3+、Er3+或Tm3+等离子与Ce3+的能级有重叠,它们之间存在着竞争吸收或能量转移,从而使Ce3+的发光减弱。本文发现Eu3+和Yb3+对Ce3+有严重的猝灭作用。
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INFLUENCE OF Ln3+IONS ON Ce3+LUMINESCENCE IN CeP5 O14 CRYSTALS |
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| Hong Guangyan,Yue Shuying.INFLUENCE OF Ln3+IONS ON Ce3+LUMINESCENCE IN CeP5 O14 CRYSTALS[J].Chinese Journal of Luminescence,1986,7(2):200-206. |
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| Authors: | Hong Guangyan Yue Shuying |
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| Institution: | Changchun Institute of Applied Chemistry, Academia Sinica |
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| Abstract: | Cerium is more abundant and cheaper than the other rare earth elements.The Ce3+ luminescence is due to a f-d transition with a broad emission bands.Its decay time of the fluorescence is very short, usually in the range of 30-100 ns.The phosphors with Ce3+ ion find applications in cathodolu-minescence and photoluminescence, and they are scintillator materials.So people havebeen interested in Ce3+ luminescence.The Ce3+ luminescence varies strongly with host lattice and local surroundings.The energy transfer and sensitization had been studied between Ce3+ and Ln3+ ions in several materials. |
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