Electrochromic properties of Prussian Blue nanocube film directly grown on FTO substrates by hydrothermal method

Prussian Blue (PB) nanocube film was directly grown on FTO substrates by a facile hydrothermal method for electrochromic performance. The structure of the PB film was examined by X-ray diffraction, Scanning electron microscopy, and Raman spectroscopy. The electrochromic properties showed that the PB film synthesized with 1 h displayed superior coloration/bleaching response of 5.5/9.0 s and the PB film synthesized with 3 h presented the highest optical contrast of 2.35. This work provides a novel way to grow PB nanocube directly on FTO substrate and shows its potential application in smart window. (C) 2019 Elsevier B.V. All rights reserved.