| 摘要 |
PURPOSE:To obtain a fully solid state type electrochromic (EC) element having a high coloring density and response speed by laminating a transparent electrode an EC layer disposed with insulation layers between serveral kinds of EC layers having thin film thicknesses, an insulation layer, an EC layer and a cathode in this order on a transparent substrate. CONSTITUTION:A transparent electrode 2 is formed on a glass substrate 1, and an EC material layer 6 laminated with several kinds of EC layers and insulation layers such as a thin EC layer 6a of, for example, Ir(OH)2 or the like, an insulation material layer 6b of Ta2O5 or the like, and a thin EC material layer 6 of Cr2O3 or the like is formed on the electrode 2. An insulation layer 4 of Ta2O5, etc., an EC layer 3 of WO3, etc. and a transparent electrode 5 to be used as a cathode are provided successively on the layer 6, whereby a fully solid-state type EC element is made. The element having a higher coloring density and a higher response speed than in the case wherein one layer of EC layer is used is thus obtd. |
