大功率led在户外应用中的降解物理研究进展

2016 IEEE 23rd International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA) Pub Date : 2016-07-18 DOI:10.1109/IPFA.2016.7564322

Cher MingTan, Preetpal Singh

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引用次数: 2

摘要

大功率led由于其广泛的优点正在取代传统的照明光源。然而，由于缺乏对其失效机制和相关可靠性研究的了解，特别是在户外应用中，它们的可靠性仍然令人担忧。本文综述了高功率led基于湿度和高温的降解机制的研究进展。在不同的湿度水平下以及在它们的生命周期中，失效机制是不同的。这使得现有的寿命预测模型不适用于大功率led。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A review on degradation physics of high power LEDs in outdoor applications

High power LEDs are replacing the traditional lighting sources due its wide range of advantages. However, their reliability remain a concern due to the lack of understanding in terms of their failure mechanisms and related reliability studies, especially in outdoor applications. In this work, a comprehensive review on the study of humidity and high temperature based degradation mechanisms for high power LEDs is reported. The failure mechanism is found to vary at various humidity levels as well as during their life cycles. This renders the existing lifetime prediction models inapplicable for high power LEDs.

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2016 IEEE 23rd International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)

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