Effect of heat and short-wavelength visible radiation on phosphor-embedded LED encapsulant
Authors
Appaiah, Prathika
ORCID
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Other Contributors
Narendran, Nadarajah
Leslie, Russell P.
Zhu, Yiting, 1982-
Leslie, Russell P.
Zhu, Yiting, 1982-
Issue Date
2013-12
Keywords
Lighting
Degree
MS
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
The encapsulant plays a vital role in determining the lifetime of an LED. Commonly used encapsulants are epoxy and silicone. During the operation of a pc-white LED the encapsulant is subjected to short wavelength radiation and heat from the LED chip that can degrade the encapsulant material. The degrading encapsulant reduces light output and results in reduced service life. This thesis study evaluates the effect of short-wavelength radiation and heat on the encapsulant material by examining the light transmission through an epoxy medium with phosphor as a function of short-wavelength irradiance, heat, and phosphor concentration.
Description
December 2013
School of Architecture
School of Architecture
Department
School of Architecture
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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