Improved Electrochemical Cycling Durability in a Nickel Oxide double layer film

For the first time, a crystalline-amorphous double-layered NiOx film has been prepared by reactive radio frequency magnetron sputtering, which has exhibited improved electrochemical cycling durability, whereas other electrochromic parameters have been maintained at the required level, i.e. the short coloration/bleaching time (0.8s/1.1s) and an enhanced transmittance modulation range (62.2%) at the wavelength of 550 nm. Besides this, the double-layered film has shown the best reversibility as compared with amorphous and crystalline single-layer films.