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나노 구조 물리 연구단
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Air-ring microstructure arrays for enhanced light extraction from a face-up light-emitting diode

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Title
Air-ring microstructure arrays for enhanced light extraction from a face-up light-emitting diode
Author(s)
Hyun Kyu Kim; Young Jae Park; Ji Hye Kang; Nam Han; Min Han; Beo Deul Ryu; Kang Bok Ko; Jong Han Yang; Young Taek Kim; S. Chandramohan; Hyun Jeong; Mun Seok Jeong; Chang-Hee Hong
Publication Date
2013-05
Journal
OPTICS LETTERS, v.38, no.9, pp.1491 - 1493
Publisher
OPTICAL SOC AMER
Abstract
In this Letter, a light-emitting diode (LED) with prism-shaped-air-ring microstructures (PSAMs) formed on flat sapphire substrate is demonstrated as an alternative design to face-up LEDs on patterned sapphire substrate (PSS) for enhanced light extraction efficiency. In this LED design, the emitted photons can be deflected to the top of the chip for its effective extraction, contrary to the PSS-LED wherein photons are guided to sapphire and get absorbed by packaging materials. The PSAM-LED showed an enhancement in the radiometric power as high as 10%with a low far-field angle of 129° over that of a PSS-LED under an injection current of 20 mA.
URI
https://pr.ibs.re.kr/handle/8788114/1337
ISSN
0146-9592
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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