Effect of Hydrothermal Synthesis Conditions on Morphology and Optical Properties of Acrylic/VO2 films

This work focuses on synthesis of vanadium dioxide (VO2) and development of Acrylic/VO2 composite for coating and cooling of PV modules. Depending on the hydrothermal synthesis conditions, two type of VO2 exhibiting different morphology and latent heat were prepared. The synthesized VO2 samples were characterized by using Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Their optical properties were evaluated by UV-Vis/NIR spectrophotometry. Results show that temperature of glass substrates increased after coating and the higher the VO2 content, the greater the temperature raise. The results were explained in light of NIR shielding effect of the acrylic/VO2 composite coating