Effects of Additives on Electrochromic Properties of Nanocrystalline Tungsten Oxide Films Prepared by Complexation-Assisted Sol-Gel Method.

ABSTRACT: To improve the electrochromic (EC) properties of sol-gel-derived WO₃ films, a series of organic small molecules, such as dopamine (DA), catechol, tyramine, phenol and 2-phenylethylamine, were added into peroxotungstic acid precursor sols as structure-directing additives, and five modified WO₃ films were prepared by a simple and low-cost complexation-assisted sol-gel method. The effects of the above additives on the EC properties of the modified WO₃ films have been studied in detail. Compared with the pure WO₃ polycrystalline film, all the modified films combine the advantages of nanocrystalline and amorphous phases and show higher EC properties attributed to the unique nanocrystal-embedded amorphous structure. The results indicate that different

SUBMITTER: Zhou D 

PROVIDER: S-EPMC10096167 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature