Omni-directional reflectors for light-emitting diodes

Jong Kyu Kim; J.-Q Xi; E. Fred Schubert

doi:10.1117/12.661563

22 February 2006 Omni-directional reflectors for light-emitting diodes

Jong Kyu Kim, J.-Q Xi, E. Fred Schubert

Proceedings Volume 6134, Light-Emitting Diodes: Research, Manufacturing, and Applications X; 61340D (2006) https://doi.org/10.1117/12.661563
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

This article discusses possible solutions to limitations in light extraction efficiency of light-emitting diodes (LEDs) using new types of triple-layer omni-directional reflectors (ODRs). The ODRs have lower mirror losses than metal reflectors and distributed Bragg reflectors (DBRs). High-reflectivity ODRs have been incorporated into AlGaInP LEDs and GaInN LEDs. It is shown that the ODR significantly increases light extraction from ODR-LEDs as compared to reference LEDs employing a DBR or metal reflector. Other examples of innovative concepts to be presented include novel materials with unprecedented low-refractive index, which further enhance the optical properties of ODRs.

Citation Download Citation

Jong Kyu Kim, J.-Q Xi, and E. Fred Schubert "Omni-directional reflectors for light-emitting diodes", Proc. SPIE 6134, Light-Emitting Diodes: Research, Manufacturing, and Applications X, 61340D (22 February 2006); https://doi.org/10.1117/12.661563

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