Tungsten trioxide film is an important electrochromic film. In recent years, WO3 electrochromic thin film has been well received by scientists in the field of energy-saving building materials, as the electrochromic glass assembled using WO3 film as an electrochromic layer is an environmentally-friendly energy-saving glass with remarkable heat insulation and heat preservation effect. Also, such glass can prevent glare and ultraviolet light. So, what method can WO3 film be prepared by?

Electrochromic film can be a WO3 film. According to experts, tungsten trioxide electrochromic thin film is the most studied inorganic electrochromic material. So how to prepare WO3 electrochromic film? - By sol dip-coating method.

Tungstic acid for preparing an electrochromic film refers to tungstic acid powder. The tungstic acid powder can be mainly used in the production stage of WO3 sol in the preparation of tungsten oxide electrochromic film. So, how to prepare WO3 sol with tungstic acid?

WO3 for glare-free mirror is a very popular and the most studied inorganic electrochromic material. Presumably, many car owners know that liquid crystal materials are often used to prepare the car rearview mirrors currently, which can only be converted between light and dark. And it often gives people’s eyes an uncomfortable feeling. Especially, when the summer sun is strong, strong sunlight can stab people's eyes and cause traffic accidents.

Tungsten oxide for all-solid-state electrochromic glass has been particularly concerned and studied in the last century, especially in recent years. So, what makes tungsten oxide electrochromic glass for applying in green smart buildings so popular?

Tungsten trioxide, more precisely, tungsten trioxide electrochromic film with good transparency and uniformity and good contact with the substrate is an important material for assembling an all-solid-state electrochromic glass. As we all know, China has done a lot of research work on electrochromic materials and electrochromic device, but these studies are done in a small number of universities and research institutes. So, China is still lagging behind in bringing this technology to practical applications and realizing the process of industrialization.

Tungsten trioxide is a kind of electrochromic material that can be prepared by vacuum co-evaporation method, magnetron sputtering method, vacuum electron beam evaporation method, electroless plating method, anodic oxidation method, chemical vapor deposition method and sol-gel method, which can be used to prepare a window type electrochromic device.

Large area smart device can be prepared using tungsten trioxide film as an electrochromic layer material. While there are uneven discoloration problem in the production of these large-area electrochromic devices. How to solve the problem of uneven discoloration of large-area electrochromic devices? Experts propose the following options:

Tungsten trioxide can be applied for producing a reflective electrochromic device. As you may have known, tungsten trioxide film can be used to prepare an electrochromic glass and has been widely used in automotive anti-glare rearview mirrors, side windows and skylight windows, aircraft portholes, architectural exterior glasses, and display screens. But do you know where the tungsten oxide reflective electrochromic devices can be used?

Tungsten oxide film can be used to produce a large area smart device. We all know that the electrochromic performance of small-sized electrochromic devices is very uniform. But, when the size of electrochromic devices continues to increase, significant discoloration unevenness occurs, which has greatly plagued the application scenarios of large-sized electrochromic devices. But why is there discoloration unevenness in large-area electrochromic devices of tungsten oxide?