Improvement of Light Extraction Efficiency of White LEDs Using Microstructure Array on Phosphor Silicone Layer

被引：0
|
作者：
Yu, Shan [1 ,2 ]
Hu, Run [2 ]
Chen, Mingxiang [1 ,2 ]
Liu, Sheng [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Inst Microsyst, State Key Lab Digital Mfg Equipment & Technol, Sch Mech & Engn, Wuhan 430074, Peoples R China
[2] Huazhong Uni Sci & Tech, Wuhan Natl Lab Optoelectron, Wuhan 430074, Hunan, Peoples R China
来源：
2012 13TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING (ICEPT-HDP 2012) | 2012年
关键词：
EMITTING-DIODES; ENHANCEMENT;
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：
White light emitting diodes (LEDs) with microstructure array on top surface of the phosphor silicone layer are demonstrated to have enhanced the light extraction efficiency (LEE) compared with white LEDs with flat phosphor layer. The effects of microstructure array on the LEE of LEDs are investigated by ray tracing simulations and experiments. Simulation results reveal that spherical cap microstructure array can increase the LEE by 12%. Experimental results also show that spherical cap microstructure array fabricated by a molding method can increase the luminous efficiency by 10.1%.
引用
收藏
页码：673 / 676
页数：4
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