LED白光照明用(Y098-xSrx)3Al5O12:Ce006 和(Y098-xBax)3Al5O12:Ce006系列荧光粉的晶相与荧光光谱

摘要本研究采用较温和的高温固相法，用碱土金属离子Sr2+和Ba2+取代Y3+离子进行基质取代，合成了一系列(Y0.98-xSrx)3Al5O12:Ce0.06 和 (Y0.98-xBax)3Al5O12:Ce0.06 荧光粉。运用XRD对荧光粉进行了表征,试验结果表明：在一定的掺杂取代范围内，这些体系具有立方石榴石结构。运用荧光光谱仪对荧光粉的发光性能进行了表征，试验结果表明：当用Sr2+或Ba2+取代Y3+离子时，随着Sr2+、Ba2+取代量的增大，发射峰峰值不变，发光强度都是先增大后减小，分别在x=0.10和0.05时达到最大值。这可能是电荷补偿效应的作用，即用2价的Sr2+或Ba2+取代3价的Y3+产生的负电荷补偿Ce4+转化成Ce3+所需要的负电荷。

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	张宝昌
	刘静
	张德文
	孙淑清

关键词： WLED 高温固相法 YAG:Ce3+荧光粉

Abstract： In this paper, a series of (Y0.98-xSrx)3Al5O12:Ce0.06 or (Y0.98-xBax)3Al5O12:Ce0.06 phosphors were prepared using moderate high temperature solid-state reaction. The products were analyzed by XRD, the results show that all systems have cubic garnet structures when doping concentration is less than 0.10 for Sr2+ ions or 0.05 for Ba2+ ions. The products were characterized by luminescence spectra, the results indicate that the emission spectra peak dont move with the increase of the dopant concentration of Sr2+ or Ba2+, but the luminescent intensity increases with increasing Sr2+ or Ba2+ concentration and reaches maximum till x=0.10 (for Sr2+) or x=0.05 (for Ba2+) and then decreases.This may attribute to the effect of charge compensation in the preparation of those phosphors.

Keywords： WLED high temperature solid-state reaction YAG:Ce3+ phosphor

引用本文:

张宝昌, 刘静, 张德文, 孙淑清.LED白光照明用(Y098-xSrx)3Al5O12:Ce006 和(Y098-xBax)3Al5O12:Ce006系列荧光粉的晶相与荧光光谱[J]. 化学工业与工程, 2011,28(1): 13-13

ZHANG Bao-Chang, LIU Jing, ZHANG De-Wen, SUN Shu-Qing.Crystalline Phases and Fluorescence Spectra of (Y098-xSrx)3Al5O12:Ce006 and (Y098-xBax)3Al5O12:Ce006 Phosphors for White LED[J]. Chemcial Industry and Engineering, 2011,28(1): 13-13