Abstract
The authors propose a simple method to further improve light extraction efficiency of GaN-based phosphoric acid etched light-emitting diodes (LED) by forming a light guiding structure on a sapphire substrate. Compared with conventional LEDs, it was found that the output intensity of the phosphoric acid etched LEDs with a light guiding structure was 40% higher. It was also found that the light guiding structure can effectively enhance LED output intensity in the vertical directions.
Original language | English |
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Article number | 055010 |
Journal | Semiconductor Science and Technology |
Volume | 25 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2010 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry