Tungsten trioxide powder may be used to study or assemble a large area electrochromic device such as a smart window (an energy-saving glass), to regulate the transmission of light, thereby reducing the cooling energy consumption of buildings. It is reported that such smart glass is in line with international environmental protection and energy conversation. Also, as the theme of environmental protection and energy conversation is deeply concerned by the public, the smart device of tungsten trioxide film will have a wide application.
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According to experts, compared with organic electrochromic materials, tungsten oxide particles have good cycle stability and memory response so that it can maintain good memory effect when not energized. And it can also greatly reduce the use of electrical energy. Therefore, tungsten oxide has been the inorganic electrochromic material that was studied most. In other words, tungsten oxide electrochromic energy-saving windows will be expected to contribute to global building energy efficiency and reduce the pressure on the earth.
