Light extraction efficiency enhancement of white LEDs by bi-layer phosphor configuration

被引：0
|
作者：
Hu, Run [1 ]
Wang, Yiman [1 ]
Luo, Xiaobing [1 ]
Zhang, Xuebin [2 ]
Yang, Liang [2 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China
来源：
2013 14TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY (ICEPT) | 2013年
关键词：
light extraction effieincy; phosphor; light-emtting diode; bi-layer configuration; SCATTER-FREE PHOSPHORS; EMITTING-DIODES; LUMINOUS FLUX; GEOMETRY;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Experimental investigations were carried out on the light extraction efficiency (LEE) of the phosphor-converted white light-emitting diodes (LEDs) with bi-layer phosphor configuration. Phosphor modeling process was briefly introduced. It is found that when the upper phosphor's concentration is 0.4 g/cm(3) and the lower layer's concentration is 0.05 g/cm(3), the LEE was enhanced as much as 23.0%. It was concluded that when upper phosphor layer has larger concentration than the lower layer, the LEE would be enhanced. The mechanisms behind the phenomena were discussed.
引用
收藏
页码：214 / +
页数：2
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