Omni-directional reflectors for light-emitting diodes

被引：1538
|
作者：
Kim, Jong Kyu [1 ]
Xi, J. -Q. [1 ]
Schubert, E. Fred [1 ]
机构：
[1] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Future Chips Constellat, Troy, NY 12180 USA
来源：
LIGHT-EMITING DIODES: RESEARCH, MANUFACTURING, AND APPLICATIONS X | 2006年 / 6134卷
关键词：
light-emitting diode; omni-directional reflector;
D O I：
10.1117/12.661563
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：
This article discusses possible solutions to limitations in light extraction efficiency of light-emitting diodes (LEDs) using new types of triple-layer omni-directional reflectors (ODRs). The ODRs have lower mirror losses than metal reflectors and distributed Bragg reflectors (DBRs). High-reflectivity ODRs have been incorporated into AlGaInP LEDs and GaInN LEDs. It is shown that the ODR significantly increases light extraction from ODR-LEDs as compared to reference LEDs employing a DBR or metal reflector. Other examples of innovative concepts to be presented include novel materials with unprecedented low-refractive index, which further enhance the optical properties of ODRs.
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页数：12
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