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

页码：214 / +

页数：2