Optical Transmission Plasmonic Color Filter withWider ColorGamut Based on X-Shaped Nanostructure Articles uri icon

publication date

  • March 2022

start page

  • 1

end page

  • 20

issue

  • 209

volume

  • 9

International Standard Serial Number (ISSN)

  • 2304-6732

abstract

  • Extraordinary Optical Transmission Plasmonic Color Filters (EOT-PCFs) with nanostructures
    have the advantages of consistent color, small size, and excellent color reproduction, making
    them a suitable replacement for colorant-based filters. Currently, the color gamut created by plasmonic
    filters is limited to the standard red, green, blue (sRGB) color space, which limits their use
    in the future. To address this limitation, we propose a surface plasmon resonance (SPR) color filter
    scheme, which may provide a RGB-wide color gamut while exceeding the sRGB color space. On the
    surface of the aluminum film, a unique nanopattern structure is etched. The nanohole functions as a
    coupled grating that matches photon momentum to plasma when exposed to natural light. Metals
    and surfaces create surface plasmon resonances as light passes through the metal film. The plasmon
    resonance wavelength can be modified by modifying the structural parameters of the nanopattern
    to obtain varied transmission spectra. The International Commission on Illumination (CIE 1931)
    chromaticity diagram can convert the transmission spectrum into color coordinates and convert the
    spectrum into various colors. The color range and saturation can outperform existing color filters.

keywords

  • extraordinary optical transmission; plasmonic color filters; red, green, blue color gamut