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

Dipika Robidas; Sumitra Singh; Navin Rohila; Suchandan Pal; Chenna Dhanavantri

doi:10.1117/12.899875

23 August 2011 Improved light extraction efficiency of InGaN/GaN blue LED by patterning free surfaces

Dipika Robidas, Sumitra Singh, Navin Rohila, Suchandan Pal, Chenna Dhanavantri

Proceedings Volume 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics; 81731B (2011) https://doi.org/10.1117/12.899875
Event: International Conference on Fiber Optics and Photonics, 2010, Guwahati, India

Abstract

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.

Citation Download Citation

Dipika Robidas, Sumitra Singh, Navin Rohila, Suchandan Pal, and Chenna Dhanavantri "Improved light extraction efficiency of InGaN/GaN blue LED by patterning free surfaces", Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81731B (23 August 2011); https://doi.org/10.1117/12.899875

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