Crack-free fabrication of Prussian blue-based blending film for the dramatic enhancement of dual electrochromic device

Abstract

We introduce a method based on particle-printing technology to facilitate the fabrication of crack-free dual electrochromic devices (ECDs). A film prepared by blending Prussian blue (PB) with antimony fin oxide (ATO) powders had a dense structure free of surface cracks and was suitable as both anode and ion storage layers. We investigated the deposition conditions as a function of substrate temperature at room temperature, 80 degrees C, and 150 degrees C. The PB/ATO blending film formed at 150 degrees C had a uniform surface and high crystallinity