Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test

Cher Ming Tan; B. K. Chen; X. Li; Sihan Joseph Chen

doi:10.1109/TDMR.2011.2173346

Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test

Cher Ming Tan^*, B. K. Chen, X. Li, Sihan Joseph Chen

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

22 Scopus citations

Abstract

An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment.

Original language	English
Article number	6060903
Pages (from-to)	44-48
Number of pages	5
Journal	IEEE Transactions on Device and Materials Reliability
Volume	12
Issue number	1
DOIs	https://doi.org/10.1109/TDMR.2011.2173346
State	Published - 03 2012
Externally published	Yes

Keywords

Humidity
light scattering
moisture entrapment
silicone pore size

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10.1109/TDMR.2011.2173346

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title = "Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test",

abstract = "An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment.",

keywords = "Humidity, light scattering, moisture entrapment, silicone pore size",

author = "Tan, {Cher Ming} and Chen, {B. K.} and X. Li and Chen, {Sihan Joseph}",

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T1 - Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test

AU - Tan, Cher Ming

AU - Chen, B. K.

AU - Li, X.

AU - Chen, Sihan Joseph

PY - 2012/3

Y1 - 2012/3

N2 - An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment.

AB - An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment.

KW - Humidity

KW - light scattering

KW - moisture entrapment

KW - silicone pore size

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M3 - 文章

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SN - 1530-4388

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JO - IEEE Transactions on Device and Materials Reliability

JF - IEEE Transactions on Device and Materials Reliability

IS - 1

M1 - 6060903

ER -

Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test

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Keywords

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