Here, we propose a transparent cooler that incorporates a top PDMS emitter and a bottom semi-transparent reflector. The bottom reflector comprises a Bragg mirror and perforated metallic film with a thickness of 90 microns, reflecting near-infrared Band A and visible, respectively. By adding visible reflection via the metallic mirror area of perforated film, transparency, and reinforced reflection are ensured. Our proposed cooler exhibits significantly improved cooling performance while maintaining visibility.
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