20 January 2012 Light emitting diodes: the future lighting source with high efficiency
Author Affiliations +
Abstract
Recent developements for highly efficient ligth emitting diodes are introduced. Multi-quantumwell structure to improve the internal quantum efficiency, chip fabrication techniques to increase the extraction efficiency, and packaging techniques with phosphor distribution optimization are combined to obtain the efficient LEDs. Comparison between the several leading products in the market has been performed to reveal the current LED techniques. The internal quantum efficiency is found to be related to not only the dislocation density, but also the defect size and type. Some key factors are reviewed on the reliability of LEDs which recently has been improved a lot. For general lighting application, LM-80 test becomes the industry standard and will be introduced briefly.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hoki Kwon, Hoki Kwon, "Light emitting diodes: the future lighting source with high efficiency", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82681Z (20 January 2012); doi: 10.1117/12.907976; https://doi.org/10.1117/12.907976
PROCEEDINGS
5 PAGES


SHARE
RELATED CONTENT

Micro-packaging in high-power LED
Proceedings of SPIE (May 30 2013)
Complete solid state lighting (SSL) line at CEA LETI
Proceedings of SPIE (September 24 2014)
Design a LED coupler to collocate with a light guide...
Proceedings of SPIE (September 24 2014)
High-power LED package requirements
Proceedings of SPIE (January 25 2004)

Back to Top