Materials Letters | 2019
A novel method to improve phase transition of VO2 thermochromic films by Cs0.32WO3 nanoparticles
Abstract
Abstract The VO2/Cs0.32WO3 composite thermochromic films were designed to promote the practical application of the VO2-based smart windows. The addition of 0.9\u202fwt% Cs0.32WO3 can significantly shorten the phase transition response time and improve the solar heat shielding capacity of VO2, while maintaining high visible light transmittance (49.6%) and good solar modulation ability (10.4%). Furthermore, the phase transition of the composite film can occur at indoor temperature of 30\u202f°C, and the indoor temperature can be greatly reduced by 7.7\u202f°C under the simulated solar irradiation. These excellent properties make the VO2/Cs0.32WO3 films promising as smart energy-saving windows.