@article{aa0ba9d4f7d844c5958cab52cbba886e,
title = "Photonic crystal structure effect on the enhancement in the external quantum efficiency of a red LED",
abstract = "The enhancement in external quantum efficiency of a red light-emitting diode (LED) from photonic crystal (PhC) hole patterns was investigated. A red LED was chosen because its epitaxial layers are relatively free from defects as compared to GaN-based LEDs. The peak emission wavelength was 642 nm, and a triangular-lattice PhC was designed with a hole diameter to lattice distance ratio of 0.5. The lattice distance to wavelength ratio (a/λ) was varied from 0.2 to 4.6 in order to evaluate the enhancement in the external quantum efficiency. An improvement in efficiency greater than 75% was obtained for a/λ between 0.6 and 2.0. This improvement of the optical characteristics occurred with unchanged electrical properties.",
keywords = "Light-emitting diode (LED), Photonic crystal (PhC)",
author = "Taesung Kim and Leisher, {Paul O.} and Danner, {Aaron J.} and Ralph Wirth and Klaus Streubel and Choquette, {Kent D.}",
note = "Funding Information: Manuscript received April 3, 2006; revised May 19, 2006. The Center for Microanalysis of Materials, which is supported in part by U.S. Deptartment of Energy Grant DEFG02-91-ER45439, is acknowledged. This work was supported in part by the National Science Foundation under Grant ECS 03-35083. T. Kim is with the University of Illinois Urbana-Champaign, Urbana, IL 61801 USA, and also with Natetron Technology Inc., Champaign, IL 61822 USA. P. O. Leisher and K. D. Choquette are with the University of Illinois Urbana-Champaign, Urbana, IL 61801 USA (e-mail: pleisher@ieee.org). A. J. Danner was with the University of Illinois Urbana-Champaign, Urbana, IL 61801 USA. He is now with Avago Technologies, Singapore. R. Wirth and K. Streubel are with the OSRAM Opto Semiconductors GmbH, Leibnizstr, Regensburg D-93055, Germany. Digital Object Identifier 10.1109/LPT.2006.881235",
year = "2006",
month = sep,
day = "1",
doi = "10.1109/LPT.2006.881235",
language = "English (US)",
volume = "18",
pages = "1876--1878",
journal = "IEEE Photonics Technology Letters",
issn = "1041-1135",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "17",
}