Enhancement of angular flux utilization and light extraction efficiency based on micro array in GaN LEDs

Ching-Cherng Sun; Shang-Yu Tsai; Tsung-Xian Lee; Wei-Ting Chien

doi:10.1117/12.843436

24 February 2010 Enhancement of angular flux utilization and light extraction efficiency based on micro array in GaN LEDs

Ching-Cherng Sun, Shang-Yu Tsai, Tsung-Xian Lee, Wei-Ting Chien

Author Affiliations +

Proceedings Volume 7617, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV; 76170A (2010) https://doi.org/10.1117/12.843436
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

In this paper, based on Monte Carlo ray tracing we simulate light extraction efficiency and directionality of the light pattern of GaN LEDs implanted with micro-pyramid structure with or without lens encapsulation. We have shown that micro-pyramid structures at some specific slanted angles in the LEDs are useful to increase effective flux utilization through enhancement of both the directionality and light extraction efficiency.

Citation Download Citation

Ching-Cherng Sun, Shang-Yu Tsai, Tsung-Xian Lee, and Wei-Ting Chien "Enhancement of angular flux utilization and light extraction efficiency based on micro array in GaN LEDs", Proc. SPIE 7617, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV, 76170A (24 February 2010); https://doi.org/10.1117/12.843436

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