A Smart Window with Passive Radiative Cooling and Switchable Near-Infrared Light Transmittance via Molecular Engineering

• DOI: 10.1021/acsami.4c02819
• Publication Date: 2024-05-07T04:05:33Z
• Authors: Cong Ma; Zuowei Zhang; Yihai Yang; Peixiang Wang; Meina Yu; Yanzi Gao; Qian Wang; Jiumei Xiao; Cheng Zou; Huai Yang
• Keywords: Radiative Cooling

Smart windows with synergetic light modulation have heightened demands for applications in smart cars and novel buildings. However, improving the on-demand energy-saving efficiency is quite challenging due to difficulty of modulating sunlight a broad bandwidth an way. Herein, window switchable near-infrared transmittance passive radiative cooling prepared via monomer design strategy photoinduced polymerization. The effects hydrogen bonds fluorine groups acrylate monomers on electro-optical properties as well microstructures polymer-dispersed liquid crystal films been systematically studied. Some show high contrast ratio 90.4 or low threshold voltage (Vth) 2.0 V, which can be roll-to-roll processed large area. Besides, film has superior indoor temperature regulation ability its controllable properties. Its calculated 142.69 W/m2 NIR could switched below 10%. introduction carboxylic fluorinated into system endows highly efficient management capability. great potential fields such flexible windows, camouflage materials, so on.