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Thermal Stability Improvement of Vertical Conducting Green Resonant-Cavity Light-Emitting Diodes on Copper Substrates

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6 Author(s)
Huang, S.Y. ; Nat. Chung Hsing Univ., Taichung ; Horng, R.H. ; Liu, P.L. ; Wu, J.Y.
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Green light vertical-conducting resonant-cavity light-emitting diodes (RCLEDs) have been fabricated on a Cu substrate by the combination of laser lift-off and plating techniques. The structure of the RCLED/Cu is consisted of the InGaN-GaN multiple-quantum-well active layer between three layers of the dielectric TiO-SiO distributed Bragg reflector as a top mirror and an Al metal layer as a bottom mirror. It was found that the RCLED with Cu substrate presents superior thermal dissipation and a stable electroluminescence emission peak wavelength (507 nm) under a high injection current. It is attributed to the Cu substrate providing a good heat sink and effectively reducing the junction temperature.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 10 )

Date of Publication:

May15, 2008

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