| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrochromic element capable of reducing reflected light caused at the interface between an electrochromic layer and a transparent electrode layer or an electrolyte layer, and of controlling wavelength dependence of optical transmittance. <P>SOLUTION: An electrochromic element comprises: a pair of transparent electrode layers provided on a pair of facing substrates; and an electrolyte layer and an electrochromic layer that are arranged between the pair of transparent electrode layers. In the electrochromic element in which an optical transmittance changes by voltage applied between the pair of transparent electrode layers, the electrochromic layer consists of multiple columnar structures made of amorphous titanium oxide, and the columnar structures are oblique to a substrate normal. In addition, to the light with a wavelength in a range of 350 nm or more and 750 nm or less, a difference between a maximum value and a minimum value in refractive index of the electrochromic layer is less than 0.5. <P>COPYRIGHT: (C)2012,JPO&INPIT |
