عنوان به زبان ديگر :
Preparation and Characterization of W03 Electrochromic Films Obtained by the Sol-Gel Process
پديد آورندگان :
Sharbatdaran Masoomeh نويسنده , Novinrooz Abdoljavad نويسنده , Noorkojouri Hassan نويسنده
چكيده لاتين :
Tungsten trioxide (W03) films have been coated on indium thin oxide (ITO) conductive glass substrate, using aqueous solution ofperoxotungstic acid (PTA) by the sol-gel dip coating method X-ray diffractometery (XRD) analysis confirmed monoclinic and triclinic structure for the film and powdered W03 respectively. Fourier transforms infrared spectroscopy (FT-IR) exhibitedthestructure ofperoxotungsticacid. The SEMmicrographofannealedspeciesrevealed microcracksdue todecrease ofdensityandcontractionoflayers. Energy-dispersiveX-ray (EDX) study determined 1:3 ratios ofoxygen and tungsten atoms in the prepared films at heat treatment temperature higher than 200°C. The electrochromical behavior was investigated in 1M HCL solutionemployingcyclic voltammetry. Itwas foundthat W03filmsdemonstrated goodreversibility at 200°C.
