Determination of LED’s Efficacy for Lighting Application

Yu Yan Man; Chi Zhang; Xiao Guang Xi; Ming Lei Wu; Yan Wei Dong; Zhao Sun; Xiao Li Zhou

doi:10.4028/www.scientific.net/AMR.971-973.946

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 971-973Determination of LED’s Efficacy for Lighting...

Determination of LED’s Efficacy for Lighting Application

Abstract:

The efficacy and its degradation of light emitting diode (LED) are related to its PN junction’s temperature (T_j). Currently efficacy in certain T_j and thermo-resistant are defined for the thermal characteristics. In the paper samples from different manufacturers were tested for their efficacies and dependency relationship on T_j, results were investigated and show that current definitions on thermal characteristics are quite inconvenient or unreasonable for general lighting application. Then a new definition of LED’s efficacy was suggested for general lighting application.

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Periodical:

Advanced Materials Research (Volumes 971-973)

Pages:

946-949

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.971-973.946

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Online since:

June 2014

Authors:

Yu Yan Man, Chi Zhang, Xiao Guang Xi, Ming Lei Wu, Yan Wei Dong, Zhao Sun, Xiao Li Zhou

Keywords:

Efficacy, General Lighting, Light Emitting Diode (LED), Thermal Characteristics

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