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Electrochromism and Electrochromic Devices Paul Monk, Roger Mortimer, David Rosseinsky
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The WO3 film annealed at 250°C is amorphous and porous, exhibits a noticeable electrochromism with an optical modulation of 65.5 % at 550 nm. While electrochromism was discovered in the 1960's, electrochromic devices still unfortunately suffer various problems and have not begun to realize their full commercial potential. Inorganic and organic electrochromic materials are used in displays, smart windows, and car rearview mirrors. Tungsten oxide is the extensively studied . A variable emittance device, vacuum-deposited as a solid-state monolithic thin-film system, can function as an electrically-controlled dimmable mirror in the IR region with reflectance in the 10-90% range. In electrochromism experiments, the transport of Li ions is a major factor that affects the electrochromic behaviour. The electrochromic device consisting of NiO and WO3 films greatly simplifies the fabrication procedure and exhibits better performance than the traditional device, which offers wide application.We developed a facile and high efficiency chemical bath deposition on the structure and electrochromic properties is discussed. Electrochromism refers to a reversible change in the optical absorption of a material under an applied voltage. Integrated energy storage and electrochromic function in one flexible device: an energy storage smart window. CNST researchers describe a new high-contrast, low operating-voltage, electrochemical optical switch that uses a volume of active dye orders-of-magnitude smaller than that of conventional electrochromic devices. Rosseinsky: Electrochromism and Electrochromic Devices (Cambridge University Press, New York, 2007). Electrochromic materials, both organic and inorganic, have widespread applications in light-attenuation, displays and analysis. The application of electrochromic materials for smart windows, displays, and antiglare mirrors and several applications have been developed such as control of incoming daylight into buildings, smart windows, rearview mirrors, and aphotochromic and electrochromic devices [1–3].