Degradation Mechanisms in LED Packages

Book chapter (2013)

Authors

S.W. Koh Philips Lighting Research, Material Innovation Institute (M2i), Electronic Components, Technology and Materials -

W.D. van Driel Electronic Components, Technology and Materials - , Philips Lighting Research

C.A. Yuan Electronic Components, Technology and Materials - , TNO Science and Industry

Kouchi Zhang Electronic Components, Technology and Materials - , Philips Lighting Research

Research Group

Electronic Components, Technology and Materials () (TU Delft)

Quantum Well Phosphor Layer Electrolytic Capacitor Phenyl Salicylate Lead Emitter

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Published Date

2013-7

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Components, Technology and Materials

Abstract

Lumen depreciation is one of the major failure modes in light-emitting diode (LED) systems. It originated from the degradation of the different components within the package, being the LED device or chip, the driver, and the optical materials (including phosphorous layer). This chapter describes the state of the art of the degradation mechanism for these components and how they contribute to the lumen depreciation of the LED package as a whole.