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Proceedings Paper

AlGaAs/GaAs lens-shaped LED with high efficiency and narrow field pattern
Author(s): Gyuseong Cho; Young-Se Kwon
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Paper Abstract

The new LED structure suitable for high power and narrow beam pattern is proposed composed of microlens and LED layer. The microlens is fabricated by the meltback etching and regrowth technique in LPE. To control the shape of microlens, meltback etching and regrowth technique is studied and nearly ideal hemisphere is obtained. The characteristics of the proposed LED structure is calculated based upon ray-tracing method. And the fabricated result is discussed.

Paper Details

Date Published: 23 October 1992
PDF: 12 pages
Proc. SPIE 1813, Optoelectronic Component Technologies, (23 October 1992); doi: 10.1117/12.131245
Show Author Affiliations
Gyuseong Cho, Korea Advanced Institute of Science and Technology (South Korea)
Young-Se Kwon, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 1813:
Optoelectronic Component Technologies
GouChung Chi; Chi-Shain Hong, Editor(s)

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