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Extrapolation of lifetime of high power LEDs under temperature-humidity conditions

  • Nanyang Technological University
  • Chang Gung University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

Lifetime of high power LEDs as lighting source is needed for its widespread adoption, and extrapolation of lifetime from accelerated stress is needed. Current practice of extrapolation is to use TM-21 and Peck model. In this work, we show that the use of Peck model is not correct, and the use of TM-21 must be done with cautions for the temperature range and the identification of possible mixture degradation mechanisms is needed before performing the extrapolation. Extrapolation of lifetime beyond 10% degradation may not be trivial due to the change in the degradation mechanism.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479923342
DOIs
StatePublished - 13 03 2014
Externally publishedYes
Event2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014 - Chengdu, China
Duration: 18 06 201420 06 2014

Publication series

Name2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014

Conference

Conference2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014
Country/TerritoryChina
CityChengdu
Period18/06/1420/06/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

  • Peck model
  • TM-21
  • activation energy
  • multiple failure mechanisms

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