Fig. 2: Optical properties of the interior and exterior surfaces of the ECRC.
From: Color-preserving passive radiative cooling for an actively temperature-regulated enclosure
a Transmittance and emissivity spectra of the interior surface coating (ITO-PET film). b Transmittance and emissivity spectra (red) of the exterior surface coating (SiO2/TiO2 stacks film). The black line is the simulation result. c, d Colors in the CIE 1931xy color space map before and after (c) radiant barrier, (d) optimized hot mirror covering. e Optical image (upper part) and IR image (lower part) of the patterns covered by the two surfaces
