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GaN-Based Light-Emitting Diodes With Air Gap Array and Patterned Sapphire Substrate

✍ Scribed by Lai, Wei-Chih; Yang, Ya-Yu; Chen, Ying-Hong; Sheu, Jinn-Kong


Book ID
125477895
Publisher
IEEE
Year
2011
Tongue
English
Weight
567 KB
Volume
23
Category
Article
ISSN
1041-1135

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## Abstract We have investigated possible degradation mechanism for patterned sapphire substrate (PSS)‐based blue light‐emitting diodes (LEDs) using an acceleration burn‐in test under high current stress. Normal LEDs without a PSS had also been compared. Measurements showed that the PSS‐LED has low