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Proceedings Paper

Highly efficient GaN vertical light-emitting diode on metal alloy substrate from near UV to green color for solid state lighting application
Author(s): Chao-Chen Cheng; Chen-Fu Chu; Wen-Huan Liu; Jiunn-Yi Chu; Hao-Chun Cheng; Feng-Hsu Fan; Jui-Kang Yen; Chuong Anh Tran; Trung Doan
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Paper Abstract

GaN vertical LED on metal alloy substrate (VLEDMS) has been successfully realized for wavelength spectrum from near UV to green color. Owing to the vertical structure and highly heat-conductive metal alloy substrate, VLEDMS exhibits an ultra high brightness and excellent reliability suitable for solid state lighting (SSL) application. A brightness of 80Lm/W using 450 nm chip mixed with yellow phosphor was achieved by optimization of LED structure epitaxy, chip process and packaging. Using 405 nm chip with polychromatic phosphor a 50 Lm/W white light with color rendering index better than 90 was obtained. We also can get very good uniform correlated color temperature from package with VLEDMS chip.

Paper Details

Date Published: 12 September 2006
PDF: 6 pages
Proc. SPIE 6337, Sixth International Conference on Solid State Lighting, 633703 (12 September 2006); doi: 10.1117/12.687636
Show Author Affiliations
Chao-Chen Cheng, Semi-Photonics (Taiwan)
Chen-Fu Chu, Semi-Photonics (Taiwan)
Wen-Huan Liu, Semi-Photonics (Taiwan)
Jiunn-Yi Chu, Semi-Photonics (Taiwan)
Hao-Chun Cheng, Semi-Photonics (Taiwan)
Feng-Hsu Fan, Semi-Photonics (Taiwan)
Jui-Kang Yen, Semi-Photonics (Taiwan)
Chuong Anh Tran, SemiLEDs Corp. (United States)
Trung Doan, SemiLEDs Corp. (United States)

Published in SPIE Proceedings Vol. 6337:
Sixth International Conference on Solid State Lighting
Ian T. Ferguson; Nadarajah Narendran; Tsunemasa Taguchi; Ian E. Ashdown, Editor(s)

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