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Effects of disorder in a photonic crystal on the extraction efficiency of a light-emitting diode
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-3401-1125
2009 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 106, no 1Article in journal (Refereed) Published
Abstract [en]

We analyze the effects of disorder in a photonic crystal (PC) on the extraction efficiency of a light-emitting diode (LED) by using a full-vectorial finite-difference time-domain method. The extraction efficiency of the ordered PC LED (EEOPL) and the extraction efficiency of the disordered PC LED (EEDPL) are compared. The physical explanation for the difference between the EEOPL and EEDPL is given through the mechanism of the guided modes and leaky modes. When the frequencies are in the leaky mode region, the EEOPL and EEDPL are comparable even if some disorder exists in the fabrication process.

Place, publisher, year, edition, pages
2009. Vol. 106, no 1
Keyword [en]
finite difference time-domain analysis, light emitting diodes, photonic, crystals
Identifiers
URN: urn:nbn:se:kth:diva-18610DOI: 10.1063/1.3159650ISI: 000268065000124Scopus ID: 2-s2.0-67650708806OAI: oai:DiVA.org:kth-18610DiVA: diva2:336657
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2013-11-19Bibliographically approved

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He, Sailing

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