Better thermochromic glazing of windows with anti-reflection coating

Abstract Anti-reflection coating on a thermochromic VO 2 film has been studied by means of the RF sputtering and is proposed as a possible solution for the enhancement of luminous transmittance of thermochromic film. SiO 2 anti-reflection coating raised the luminous transmittance of thermochromic film significantly at both low and high temperature. In addition, it was found that thermochromism was maintained in the AR coated thermochromic film. More importantly, the thermochromism of VO 2 film showed greater distinctiveness after application of the anti-reflection coating, while the transition temperature of the thermochromism, 70°C, was not affected by the anti-reflection coating.