Simulation and analysis of GaN-based light-emitting diodes with diamond shaped

Bin Cao; Pei Wang; Zhiyin Gan; Sheng Liu

doi:10.1117/12.843471

12 October 2009 Simulation and analysis of GaN-based light-emitting diodes with diamond shaped

Bin Cao, Pei Wang, Zhiyin Gan, Sheng Liu

Proceedings Volume 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies; 75181D (2009) https://doi.org/10.1117/12.843471
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

Improving light extraction efficiency (LEE) is important to enhance efficiency of light-emitting diodes (LEDs) and the issue has been studied comprehensively. A GaN-based LED chip with diamond shaped is presented in this letter and LEE was analyzed. The LEEs of the conventional chip and flip chip with different angle of slant from 0° to 20° were obtained through Monte-Carlo ray tracing method, which is a useful and efficient way in studying the LEE of LED. The results show that the LEE of the chip with obliquity enhanced by 20.2% compared with conventional rectangle chip with mirror bottom surface, however, there is no improve of the LEEs of flip chip and conventional chip with diffuse surface.

Citation Download Citation

Bin Cao, Pei Wang, Zhiyin Gan, and Sheng Liu "Simulation and analysis of GaN-based light-emitting diodes with diamond shaped", Proc. SPIE 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies, 75181D (12 October 2009); https://doi.org/10.1117/12.843471

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