Preparation, Electronic Structure and Optical Properties of the Electrochromic Thin Films

• Main Authors: T. Lukaszewicz, A. Ravinski, I. Makoed
• Format: Article
• Language: English
• Published: Vilnius University Press 2004-10-01
• Series: Nonlinear Analysis
• Subjects: electrochromic device; band structure; optical properties
• Online Access: http://www.zurnalai.vu.lt/nonlinear-analysis/article/view/15150

A new multilayer electrochromic device has been constructed according to the following pattern: glass1/ITO/WO3/gel electrolyte/BP/ITO/glass2, where ITO is a transparent conducting film made of indium and tin oxide and with the surface resistance equal 8–10 Ω/cm2 . The electrochromic devices obtained in the research are characterized by great (considerable) transmittance variation between coloration and bleaching state (25–40% at applied voltage of 1.5 to 3 V), and also high coloration efficiency (above 100 cm2 /C). Selfconsistent energy bands, dielectric permittivity and optical parameters are calculated using a full-potential linear muffin-tin orbital method. The numerical solution of the Debye-Smoluchowski equations is developed for simulating recombination probability of Li+ ions in amorphous electrolyte.