Abstract
In this work, we present a multilayer film structure that utilizes optical resonance for preparing extremely efficient and highly saturated red, green, and blue transmittance colors. Based on numerical simulations and analysis, it is demonstrated that the structure produces R, G, and B colors with a purity approximately comparable to that of standard RGB colors and that a rich variety of structural colors can be obtained while maintaining efficient transmission efficiency. In addition, a metallic interlayer is introduced into the transparent dielectric cavity to selectively suppress resonances in the short-wavelength region, thereby improving the purity of the red color. Finally, we investigate the effect of the incidence angle on color purity and transmission efficiency. This study introduces a rapid and efficient method for producing high-quality structural colors, expanding their versatile applications in optics, materials science, and energy fields.
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