Abstract
An n-side-up AlGaInP-based light-emitting diode (LED) with a triangle-like surface morphology was fabricated using the adhesive layer bonding technique, followed by wet etching to roughen the surface. The light output power of the roughened-surface LED was 1.6 times higher than that of a flat-surface LED at an injection current of 20 mA, i.e., a significant improvement attributed to the ability of the roughened surface to not only reduce the internal reflection between the rear mirror system and the semiconductor-air interface, but also to effectively scatter the light outside the LED device.
Original language | English |
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Pages (from-to) | 2289-2291 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 17 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2005 Nov |
Externally published | Yes |
Keywords
- AlGaInP
- Light-emitting diode (LED)
- Surface roughening
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering