Investigation of Polarized Light Emitting Diode
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.