Improved light extraction efficiency of InGaN/GaN blue LED by patterning free surfaces

被引：0
作者：
Robidas, Dipika [1 ]
Singh, Sumitra [1 ]
Rohila, Navin [1 ]
Pal, Suchandan [1 ]
Dhanavantri, Chenna [1 ]
机构：
[1] Cent Elect Engn Res Inst, Council Sci & Ind Res, Pilani 333031, Rajasthan, India
来源：
PHOTONICS 2010: TENTH INTERNATIONAL CONFERENCE ON FIBER OPTICS AND PHOTONICS | 2011年 / 8173卷
关键词：
light-emitting diode (LED); Light Extraction efficiency; InGaN/GaN; Patterned surface; Hexagonal facets; Die structure; Light interaction; Radiation pattern; Radiant intensity; EMITTING-DIODES;
D O I：
10.1117/12.899875
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：
The light extraction efficiency of GaN/InGaN based blue LED is improved by using hexagonal facets on n- and p-free surfaces and on substrate interfaces. Light interaction with patterned surfaces having hexagonal facets significantly improved the light extraction efficiency. The simulated results show that the light extraction efficiency is drastically improved from 18.08% to 89.27% by patterning the free surfaces.
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页数：7
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