Colouration of tungsten oxide films: A model for optically active coatings

Properties, requirements and possibilities of smart windows for dynamic daylight and solar energy control in buildings: A state-of-the-art review

“…One example of transmittance regulation in an electrochromic window incorporating WO 3 is shown in Fig.2. Extensive reviews on tungsten oxide films have been written previously, where 'Case study on tungsten oxide' in Granqvist (1995) and its completion with Granqvist (2000), and 'Colouration of tungsten oxide films: A model for optically active coatings' by Bange (1999) are among the most comprehensive. Also recent possibilities have been expressed (Georg et al 2008;Deb 2008) and we would like to refer to these works for more detailed information on the colouration mechanisms of tungsten oxide.…”

Electrochromism in tungsten oxide thin films prepared by chemical bath deposition

“…Electrochromism is a unique property of the material to change reversibly its optical properties when it is electrochemically reduced or oxidized [1]. Electrochromic materials exhibit color change between the clear transparent state and a darkened colored state, or between two colored states.…”

“…These methods have benefit of being easily realizable from the point of view of industrialization, especially on large area devices, with the required electrochromic properties [22,23]. The electrochromic properties of WO3 thin films, like the transmittance modulation (T), coloration efficiency (), switching time (), and cyclic durability, strongly depends on their structural, morphological and compositional characteristics [1,2], which, in turn, depends directly on the deposition method and deposition conditions. The target of this research is to investigate electrochromic properties of WO3 thin films prepared by a simple chemical bath deposition method [24] and their possible application for solar light modulation.…”

Effect of substrate on the electro chromic properties of tungsten trioxide thin films

“…The main advantages with these TMOs are the high coloration efficiency, large material selection, reasonable stability and relatively low cost [6], [10], [14]. Decades of research carried out on the TMOs has confirmed Tungsten Trioxide (WO 3 ) as the most efficient and versatile EC material [3], [4]. The electrochromic (EC) performance of the well-known Tungsten Trioxide (WO 3 ) has become the subject innumerable studies in the recent years.…”