Abstract
Commercialization of large-area electrochromic glazing is reviewed with respect to device configuration and materials employed. Device configurations including electrochromic solutions and solid state electrochromic layers are discussed as well as novel user-controlled photochromic and gasochromic devices.
Highlights
Over the past ten years there has been a dramatic increase in electrochromic (EC) research activity, as seen in the large number of scientific papers and patents issued during this time
The least expensive transparent conductors which are currently available are FTO. These are available under the trade names ‘‘TEC’’ and ‘‘Sungate 500’’ from Libbey Owens Ford Industries (LOF)[20] and Pittsburg Plate Glass (PPG)[21], respectively, and from AFG Industries Inc.[22]
Nb2O5 is reported to have EC properties which could rival those of WO3, this material has yet to be used as a cathodic EC film in a patented device
Summary
Over the past ten years there has been a dramatic increase in electrochromic (EC) research activity, as seen in the large number of scientific papers and patents issued during this time. Considerable activity is taking place to expand EC technology to larger area applications such as automotive and architectural glazing. This is not an easy task since increasing the size of an EC device involves the combination of many different areas of research which are all interdependent. Sunroofs are most likely to be the first application of EC glazing in automobiles They have the advantage in that because of their location in a vehicle they do not have to comply with the high transmission requirements and they are relatively small, in typical sizes less than 0.7. The different requirements for automotive and architectural glazing are listed in the Table 1
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