Fabrication and optical performance of W-VO2/PVP/AAO composite structure in visual and near infrared band

Vanadium dioxide with tungsten doping (W-VO2), Polyvinylpyrrolidone (PVP) and anodic aluminum oxide (AAO) composite structure (W-VO2/PVP/AAO) was fabricated by introducing the W-VO2/PVP solution into pores of AAO by capillary force. The morphology and optical performance were studied. W-VO2/PVP can form compact distribution in pores of AAO by increasing the stickiness, and then enhance the visible light transmittance and solar modulation ability simultaneous. We optimized the thickness of W-VO2/PVP/AAO with continuous distribution in pore, and the visible light transmittance and solar modulation ability can reach up to 64.7% and 19.2%, respectively. This result will benefit to the application of VO2 nanoparticles in smart windows. [Display omitted]