GaN-based leds with rough surface and selective koh etching

Shoou Jinn Chang; L. M. Chang; D. S. Kuo; T. K. Ko; S. J. Hon; Shuguang Li

doi:10.1109/JDT.2013.2278621

GaN-based leds with rough surface and selective koh etching

Shoou Jinn Chang, L. M. Chang, D. S. Kuo, T. K. Ko, S. J. Hon, Shuguang Li

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The authors propose a simple method to enhance the performances of GaN-based light-emitting diodes (LEDs) with rough surface. By using KOH to selectively smooth the area beneath the p-contact pad, it was found that we could reduce the forward voltage and enhance output power of the GaN-based LEDs. It was also found that wall-plug efficiency (WPE) of the proposed LEDs was 10.3% larger than that of the conventional LEDs with rough surface and 33.9% larger than that of the conventional LEDs with flat surface. Furthermore, it was found that the use of selective KOH etching will not degrade drooping effect of the LEDs.

Original language	English
Article number	6579669
Pages (from-to)	27-32
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	10
Issue number	1
DOIs	https://doi.org/10.1109/JDT.2013.2278621
Publication status	Published - 2014 Jan

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/JDT.2013.2278621

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abstract = "The authors propose a simple method to enhance the performances of GaN-based light-emitting diodes (LEDs) with rough surface. By using KOH to selectively smooth the area beneath the p-contact pad, it was found that we could reduce the forward voltage and enhance output power of the GaN-based LEDs. It was also found that wall-plug efficiency (WPE) of the proposed LEDs was 10.3% larger than that of the conventional LEDs with rough surface and 33.9% larger than that of the conventional LEDs with flat surface. Furthermore, it was found that the use of selective KOH etching will not degrade drooping effect of the LEDs.",

author = "Chang, {Shoou Jinn} and Chang, {L. M.} and Kuo, {D. S.} and Ko, {T. K.} and Hon, {S. J.} and Shuguang Li",

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AU - Chang, Shoou Jinn

AU - Chang, L. M.

AU - Kuo, D. S.

AU - Ko, T. K.

AU - Hon, S. J.

AU - Li, Shuguang

PY - 2014/1

Y1 - 2014/1

N2 - The authors propose a simple method to enhance the performances of GaN-based light-emitting diodes (LEDs) with rough surface. By using KOH to selectively smooth the area beneath the p-contact pad, it was found that we could reduce the forward voltage and enhance output power of the GaN-based LEDs. It was also found that wall-plug efficiency (WPE) of the proposed LEDs was 10.3% larger than that of the conventional LEDs with rough surface and 33.9% larger than that of the conventional LEDs with flat surface. Furthermore, it was found that the use of selective KOH etching will not degrade drooping effect of the LEDs.

AB - The authors propose a simple method to enhance the performances of GaN-based light-emitting diodes (LEDs) with rough surface. By using KOH to selectively smooth the area beneath the p-contact pad, it was found that we could reduce the forward voltage and enhance output power of the GaN-based LEDs. It was also found that wall-plug efficiency (WPE) of the proposed LEDs was 10.3% larger than that of the conventional LEDs with rough surface and 33.9% larger than that of the conventional LEDs with flat surface. Furthermore, it was found that the use of selective KOH etching will not degrade drooping effect of the LEDs.

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GaN-based leds with rough surface and selective koh etching

Abstract

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