| LED暖白光照明用(Y_(2.95-x)Gd_xCe_(0.05))Al_5O_(12)系列荧光粉的晶相与三维荧光光谱 |
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| 引用本文： | 李长敏,李中华,史岩,杨殿来,林海.LED暖白光照明用(Y_(2.95-x)Gd_xCe_(0.05))Al_5O_(12)系列荧光粉的晶相与三维荧光光谱[J].大连工业大学学报,2007,26(2). |
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| 作者姓名： | 李长敏 李中华 史岩 杨殿来 林海 |
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| 摘 要： | 采用高温固相法合成(Y2.95-xGdxCe0.05)Al5O12系列荧光粉,研究了(Y2.95-xGdxCe0.05)Al5O12粉体的晶体结构,运用三维荧光光谱全面表征该体系荧光粉的发射光谱,结果表明Gd3+的加入并没有改变荧光粉的原有晶体结构,只是由于Gd3+离子半径大于Y3+离子半径,使得样品晶格常数略有增加,并且导致荧光发射主峰向长波方向移动,有利于降低白光LED器件相关色温和提高显色指数.
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| 关 键 词： | 白光LED (Y2.95-xGdxCe0.05)Al5O12 荧光粉 晶相 三维荧光光谱 |
Crystalline phases and three-dimensional fluorescence spectra for series of (Y2.95-xGdxCe0.05)Al5O12 warm white LED phosphor |
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| LI Chang-min,LI Zhong-hua,SHI Yan,YANG Dian-lai,LIN Hai.Crystalline phases and three-dimensional fluorescence spectra for series of (Y2.95-xGdxCe0.05)Al5O12 warm white LED phosphor[J].Journal of Dalian Dalian Polytechnic University,2007,26(2). |
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| Authors: | LI Chang-min LI Zhong-hua SHI Yan YANG Dian-lai LIN Hai |
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| Abstract: | A series of rare earth complex oxides,i.e.(Y2.95-xGdxCe0.05) Al5O12,were synthesized with the solid-phase method at high temperature,of which the crystal structure and luminescent properties were investigated.The emission spectra of Ce3+ showed a tendency of red-shift with the increase of Gd3+ content in(Y2.95-xGdxCe0.05) Al5O12 system,which is beneficial to reduce the correlated color temperature of white LED devices and raise the color rendering index. |
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| Keywords: | white LED (Y2 95-xGdxCe0 05)Al5O12 phosphor crystalline phase three-dimensional fluorescence spectra |
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