Journal of Light & Visual Environment
Online ISSN : 1349-8398
Print ISSN : 0387-8805
ISSN-L : 0387-8805
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Performance of High-luminous Efficacy White LEDs
Kanji BAND
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2011 Volume 35 Issue 3 Pages 192-196

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Abstract

The performance of InGaN/YAG white LEDs for lighting applications is reviewed. Advanced small-chip-technology has achieved high-luminous efficacy white LED of almost 200lm/W by improving internal efficiency, extraction efficiency and electrical resistance. In addition, high-luminous flux device of 10,000lm by flip-chip array has been also developed by large-chip-technology.

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© 2011 The Illuminating Engineering Institute of Japan
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