한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 1999년도 제17회 학술발표회 논문개요집
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- Pages.157-157
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- 1999
Durability Improvement of Electrochromic Tungsten Oxides Films
- Yang, J.Y. (Dept. of Physics Kyonggi University) ;
- Kim, J.W. (Dept. of Physics Kyonggi University) ;
- Kang, G.H. (Dept. of Physics Kyonggi University) ;
- K.D.Ko (Dept. of Physics Kyonggi University) ;
- Lee, G.D. (Dept. of Physics Kyonggi University)
- 발행 : 1999.07.01
초록
Electrochromic tungsten oxide films were prepared by the electron beam deposition, and the dependence of the electrochemical stability and the optical properties on the titanium concentration, and on the annealing temperature, that was investigated. coloring and bleaching experiments were repeated by cyclic voltammetry in a propylene carbonate solution of LiClO4. Spectrometry was used to assess the stability of the transmittance in the degraded films. Tungsten oxide films with titanium contents of about 10~15 mol% were found to be most stable, undergoing the least degradation during the repeated for coloring and bleaching cycles. The reason for this small amount of degradation was the reduction of lithium ion trapping sites in the films, which results in an increased durability. Tungsten oxide films with titanium contents of about 20 mol% were annealed at 20
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