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Enhanced Light Extraction From Triangular GaN-Based Light-Emitting Diodes

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4 Author(s)
Kim, Ja-Yeon ; Gwangju Inst. of Sci. & Technol., Gwangju ; Kwon, Min-Ki ; Jae-Pil Kim ; Park, Seong-Ju

This study investigated the characteristics of a triangular light-emitting diode (LED) and compared it to a standard quadrangular LED. The total radiant flux from the packaged triangular LED increased by 48% and 24% at input currents of 20 and 100 mA, respectively, compared to that of a quadrangular LED which was grown on patterned sapphire substrate. In light far-field beam distribution, the light extraction in the horizontal direction of the LED was much higher than that of the quadrangular LED due to the enhancement of light emission from the side walls of the triangular LED.

Published in:

Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 23 )

Date of Publication:

Dec.1, 2007

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