With the continuous development of science and technology, all-solid-state electrochromic devices have become a field that attracts much attention. Among them, according to different structures, such devices are subdivided into double-sided and single-sided types. However, existing all-solid-state electrochromic devices still face some challenges in application, such as high equipment investment costs, complex operating processes, long color conversion times, and insufficient light transmittance. In order to solve these problems, scientists have developed a new all-solid-state tungsten oxide electrochromic device.
This all-solid-state tungsten oxide electrochromic device has a unique structure, including a transparent substrate, on which a first transparent conductive layer, a composite layer and a second transparent conductive layer are sequentially stacked. It is worth mentioning that the raw material particles of the electrochromic layer, electrolyte layer and auxiliary color-changing layer are evenly distributed inside the composite layer. This refined design enables the device to achieve faster and more uniform color changes during the electrochromic process.
Compared with existing commercial color-changing devices on the market, the quality of all-solid-state tungsten oxide electrochromic devices has been significantly improved. First of all, its light transmittance is better, which can better maintain the transmittance of light and provide users with a clearer vision. Second, its smaller resistance means less energy is used during the electrochromic process, which also reduces the heat generated by the device. The most important thing is that its color conversion time is shorter, enabling faster color switching to meet users’ needs for efficiency. In addition, due to the use of new production processes and materials, the equipment investment cost of this device is also relatively low.
In terms of application fields, all-solid-state tungsten oxide electrochromic devices have broad application prospects. It can be used in buildings as smart windows to control the indoor heat load and improve living comfort by adjusting the amount of indoor sunlight. In addition, it can also be used as a car’s rearview mirror and top window, automatically sensing strong light and tinting it when driving at night, reducing the intensity of reflected light and preventing dazzling from affecting the driver’s driving safety. At the same time, it can also be used in areas such as aircraft cockpit windshields, safety glasses, power indicators, and light filters to bring convenience to people’s lives and work.
