CdSe纳米材料对大功率白光LED显色性能的影响  

Influence of CdSe Nano-materials on the Color-rendering Index of High-power White LED

作　　者：马骏[1] 钱可元[1] 罗毅[1,2] 

机构地区：[1]清华大学深圳研究生院半导体照明实验室,广东深圳518055 [2]清华大学电子工程系集成光电子学国家重点实验室,北京100084

出　　处：《半导体光电》2010年第5期682-686,共5页Semiconductor Optoelectronics

基　　金：国家"863"计划项目(2008AA03A194)

摘　　要：利用CdSe纳米材料可以通过改变其大小和形状得到不同波段发射光谱的特点,在常规荧光粉中加入发射波长为630nm的红色CdSe纳米材料,补充大功率白光LED光谱在深红波段的缺失。结果表明:引入红色CdSe纳米材料后,大功率白光LED的显色指数最高可到90左右,色温降低,但光效有所下降。这种方法为提高大功率白光LED显色指数提供了一种新的解决方案。CdSe nano-materials with different bands of emission spectrum can be obtained by changing their sizes and shapes,based on which,red CdSe nano-materials with the emission wavelength of 630nm can be mixed into the conventional phosphor to offset the shortage of emission spectrum of high-power white LED in the dark red band.The result shows that mixing red CdSe nano-materials into the conventional phosphor can improve the color-rendering index up to 90%,lower the color temperature,but meanwhile the luminous efficiency will also be reduced.

关 键 词：大功率白光LED CdSe纳米材料 显色指数 

分 类 号：TN312.8[电子电信—物理电子学]