24 February 2010 Enhancement of angular flux utilization and light extraction efficiency based on micro array in GaN LEDs
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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.
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Ching-Cherng Sun, Ching-Cherng Sun, Shang-Yu Tsai, Shang-Yu Tsai, Tsung-Xian Lee, Tsung-Xian Lee, Wei-Ting Chien, 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); doi: 10.1117/12.843436; https://doi.org/10.1117/12.843436
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