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http://dx.doi.org/10.6117/kmeps.2011.18.4.091

Design of Structure for High-Efficiency LEDs on Patterned Sapphire Substrate  

Kang, Ho-Ju (Department of Cogno-Mechatronics Engineering, Pusan National University)
Song, Hui-Young (Department of Cogno-Mechatronics Engineering, Pusan National University)
Jeong, Myung-Yung (Department of Cogno-Mechatronics Engineering, Pusan National University)
Publication Information
Journal of the Microelectronics and Packaging Society / v.18, no.4, 2011 , pp. 91-95 More about this Journal
Abstract
The light extraction efficiency in GaN based LED was analyzed qualitatively. The extraction efficiency was simulated with patterned shape, depth, size and spacing by using ray-tracing simulation. In simulation result, patterned shape and depth for the optimized extraction efficiency in PSS LED were in indented Hemi-sphere solid. Through the optimal patterning of the various factors, about 40% enhancement in extraction efficiency was obtained.
Keywords
Patterned sapphire substrate; LED; Extraction efficiency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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