Abstract
Non-iridescent structural colors with wide viewing angles are produced by amorphous photonic structure (APS) and have received increasing attention. However, it is still a challenge to fabricate of non-iridescent, crack-free and functional structural colors, simultaneously. Here, the flexible lamellar nanostructures of graphene oxide (GO) are introduced as a black additive to fabricate amorphous, crack-free structural colors. The color hue and spectral purity of APS film can be easily tuned by adjusting the diameter of spheres and concentration of GO. Furthermore, after reduction treatment, the APS film possesses excellent visibility, flexibility and conductivity, paving the way toward their practical applications in flexible sensors, solar cells and full-color paper-like displays.
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