Investigation of polarized light emitting diode

Tibor Gál, S. Örs, P. Koppa

Research output: Contribution to journalArticle

Abstract

The significance of LED technology in the lighting industry is increasing abruptly. However many application (LCD backlight, vehicle lights) require polarized light sources. For these applications polarized light is produced by polar filters, which limits the efficiency to less than 50%. The goal of this research was to develop a LED providing polarized light, so it is not necessary to use polar filters. The object of this work was to investigate oriented metallic nanoparticles to improve the efficiency and to manipulate the polarization of the outcoming light of a LED source. To calculate the optical properties of this problem it is necessary to solve the Maxwells equations with numerical methods. For this purpose the finite element method (FEM) was used.We observed that this interaction is strongly dependent on the polarization, distance, and orientation of the particles.

Original languageEnglish
JournalNATO Science for Peace and Security Series B: Physics and Biophysics
Volume68
DOIs
Publication statusPublished - 2015

Fingerprint

Light polarization
polarized light
Light emitting diodes
light emitting diodes
Light
Light sources
Polarization
filters
Maxwell equations
polarization
Liquid crystal displays
Maxwell equation
illuminating
luminaires
Metal Nanoparticles
Numerical methods
finite element method
light sources
vehicles
Optical properties

ASJC Scopus subject areas

  • Biophysics
  • Biotechnology
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

Cite this

Investigation of polarized light emitting diode. / Gál, Tibor; Örs, S.; Koppa, P.

In: NATO Science for Peace and Security Series B: Physics and Biophysics, Vol. 68, 2015.

Research output: Contribution to journalArticle

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