Some experts used spectroscopic ellipsometry to study the tungsten trioxide film for preparing electrochromic material. Experts say that this method has unique advantages in the optical analysis of thin film materials due to its fast test, non-contact, high precision and non-destructive characteristics.
More details, please visit:
http://www.tungsten-powder.com/tungsten-oxide.html
And it has also been reported that although some experts and scholars have previously studied the WO3 film by spectroscopic ellipsometry, only the amorphous tungsten trioxide thin film has been studied, and only the change of its optical constant has been concerned. That is to say, the study of spectroscopic ellipsometry of crystalline tungsten trioxide is still lacking. Furthermore, the relationship between amorphous WO3 and crystalline WO3 and the relationship between optical constants and electrochromic mechanisms in WO3 electrochromic processes have not been fully investigated. So these aspects may become the focus of the research of tungsten trioxide electrochromic film in order to have a better understanding of crystalline tungsten trioxide.
