Optical Transmission Plasmonic Color Filter with Wider Color Gamut Based on X-Shaped Nanostructure

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, gamut created by plasmonic filters is limited to standard red, green, blue (sRGB) space, which limits their use in future. To address this limitation, we propose surface plasmon resonance (SPR) filter scheme, may provide RGB-wide while exceeding sRGB space. On aluminum film, unique nanopattern structure etched. The nanohole functions as coupled grating that matches photon momentum plasma when exposed natural light. Metals surfaces create resonances light passes through metal film. wavelength can be modified modifying structural parameters obtain varied transmission spectra. International Commission on Illumination (CIE 1931) chromaticity diagram convert spectrum into coordinates various colors. range saturation outperform existing