Tungsten oxide film can be used to prepare an all-solid-state electrochromic window. Specifically, such an electrochromic device is assembled using an inorganic transition metal oxide (mainly tungsten trioxide) as an electrochromic material, and an inorganic lithium-containing compound or an organic polymer as an electrolyte layer.
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According to experts, such a smart glass mainly relies on the extraction and injection of lithium ions to control the discoloration of the glass. It can dynamically adjust and control the solar light and radiant heat energy. Certainly, the device has passed the test of stability and reliability under long-term outdoor sunlight conditions. So, the experts said that “Tungsten trioxide smart glass provides a comfortable indoor environment, which represents today's most advanced building energy-saving glass technology.” After decades of technical accumulation and a large number of field test data, the major advanced countries in Europe and the United States have basically determined that the all-solid-state electrochromic glass technology will be the main technological development direction of the new generation of building energy-saving glass, and they have basically realized industrialization of this technology.
