Deterioration of near-UV GaN-based LEDs in seawater vapour

Yi Tai Chen; Bo Hong Lin; Ssu Han Lu; Zi Wei Li; Yu Sheng Tsai; Tai Ping Sun; YewChung Sermon Wu; Hsiang Chen

Results in Physics (Dec 2020)

Deterioration of near-UV GaN-based LEDs in seawater vapour

Yi Tai Chen,
Bo Hong Lin,
Ssu Han Lu,
Zi Wei Li,
Yu Sheng Tsai,
Tai Ping Sun,
YewChung Sermon Wu,
Hsiang Chen

Affiliations

Yi Tai Chen: Department of Electrical Engineering, National Chi Nan University, Taiwan, ROC
Bo Hong Lin: Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Taiwan, ROC
Ssu Han Lu: Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Taiwan, ROC
Zi Wei Li: Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Taiwan, ROC
Yu Sheng Tsai: Department of Materials Science and Engineering, National Chiao Tung University, Taiwan, ROC
Tai Ping Sun: Department of Electrical Engineering, National Chi Nan University, Taiwan, ROC
YewChung Sermon Wu: Department of Materials Science and Engineering, National Chiao Tung University, Taiwan, ROC
Hsiang Chen: Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Taiwan, ROC; Corresponding author.

Journal volume & issue: Vol. 19
p. 103432

Abstract

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Reliability investigations were conducted after GaN-based LEDs were stressed in seawater vapour. Multiple electrical, optical, and material analyses on the fine nanostructures of the LED were examined. Results indicate that dark spots on the surface and etching trenches observed on the cross section might damage the quantum well and degrade LED performance. Dissolved sodium ions might diffuse and punch through the quantum well and be responsible for these spots and trenches.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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