Polarized light emitting diodes using silver nanoellipsoids.

We investigate the polarizing properties of periodic array of silver nanoellipsoids placed on top of a planar LED structure. The response of the particles is calculated with the periodic layered Green's tensor in the electrostatic limit with dynamic depolarization and radiation damping corrections. We investigate the degree of polarization and the total extracted power spectra depending on parameters like lattice period, axial ratio and particle size. The proposed model is applicable over a wide range of parameters and appropriate to optimize the given structure. The optimization procedure shows that particles in the size range of 100 nm are optimal to reach 50% degree of polarization and less than 15% absorbance for an uncollimated and unpolarized dipole source.

[1]  G. Schatz,et al.  The Extinction Spectra of Silver Nanoparticle Arrays: Influence of Array Structure on Plasmon Resonance Wavelength and Width† , 2003 .

[2]  James S. Goddard,et al.  Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice , 2005, SPIE BiOS.

[3]  Jessica C. Ramella-Roman,et al.  Polarized light imaging with a handheld camera , 2003, Saratov Fall Meeting.

[4]  E. Coronado,et al.  The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment , 2003 .

[5]  E. Fred Schubert,et al.  Polarization of light emission by 460 nm GaInN/GaN light-emitting diodes grown on (0001) oriented sapphire substrates , 2007 .

[6]  S. Moiseev.  Thin-film polarizer made of heterogeneous medium with uniformly oriented silver nanoparticles , 2011 .

[7]  O. Martin,et al.  Accurate and versatile modeling of electromagnetic scattering on periodic nanostructures with a surface integral approach. , 2010, Journal of the Optical Society of America. A, Optics, image science, and vision.

[8]  A. Davydov,et al.  Refractive index and birefringence of InxGa1–xN films grown by MOCVD , 2005 .

[9]  J. Oh,et al.  Polarized white light from LEDs using remote-phosphor layer sandwiched between reflective polarizer and light-recycling dichroic filter. , 2013, Optics express.

[10]  K. Kambe,et al.  Theory of Electron Diffraction by Crystals , 1967 .

[11]  U. Kreibig,et al.  Electronic properties of small silver particles: the optical constants and their temperature dependence , 1974 .

[12]  O. Martin,et al.  Accurate and efficient computation of the Green's tensor for stratified media , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[13]  Pál Koppa,et al.  Investigation of polarized light emitting diodes with integrated wire grid polarizer. , 2010, Optics express.