[10a-Z05-1~11] 6.4 Thin films and New materials

[10a-Z05-6] Influence of optical properties of ITO electrode on electrochromic properties of WO₃ thin films

〇Yasuhiro Ayauchi¹, Yoshio Abe¹, Midori Kawamura¹, Kyung Ho Kim¹, Takayuki Kiba¹ (1.Kitami Inst. Technol)

Keywords:electrochromic

In this study, we fabricated tungsten oxide (WO₃) thin film on indium tin oxide (ITO) thin films with different sheet resistances, and EC properties were measured in 0.01 M H₂SO₄ aqueous electrolyte. Transmittance spectra were measured by using UV-VIS-NIR spectrophotometer in visible and near-infrared regions. The WO₃ thin film deposited on the high resistance ITO thin film showed higher transmittance in the bleached state in the near infrared region, and it’s transmittance change was slightly larger than that of the WO₃ thin film deposited on the low resistance ITO thin film.