한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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- Pages.221-221
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- 2013
Improvement of Light Extraction Efficiency of GaN-Based Vertical LED with Microlens Structure
- Kwon, Eunhee (Department of Physics and Photon Science, Gwangju Institute of Science Technology (GIST)) ;
- Kang, Eun Kyu (School of Information and Communications, Gwangju Institute of Science and Technology (GIST)) ;
- Min, Jung Wook (Department of Physics and Photon Science, Gwangju Institute of Science Technology (GIST)) ;
- Lee, Yong Tak (School of Information and Communications, Gwangju Institute of Science and Technology (GIST))
- 발행 : 2013.08.21
초록
Vertical LED (VLED) has been recognized as a way to obtain the high-power LED due to their advantages [1]. However, approximately 4% of the light generated from the active region is extracted, if the light extraction from side walls and back side is neglected because of Fresnel reflection (FR) and total internal reflection (TIR) [2,3]. In this study, the optical simulation of the VLED with the various microstructures was performed. Among them, the microlens having the diameter of 3