Vanadium dioxide nanomaterial for smart thermochromic glazing of windows

摘要

Nanostructural vanadium dioxide thin films are investigated as intelligent window coatings. The films are fabricated using reactive sputtering and post annealing. A reversible semiconductor to metal phase transition for as-deposited VO2 nanostructure films with grain size of ～8nm takes place at a temperature of 35 °C, which lowers about 33 °C in comparison with a phase transition temperature of 68 °C in conventional VO2 films with a grain size of 1-2 μm. The results indicate that the nanostructural VO2 films are more suitable to the application for smart thermochromic glazing of windows than that of conventional VO2 films.