銀析出型エレクトロクロミズムによる多色調光素子

抄録

Multifunctional electrochromic (EC) materials which control multiple colors, various color density, and specular reflection are expected to be potential candidate for light-modulation device and novel reflective display device. In order to realize this color variation in inorganic EC devices, we investigated the electrochemical deposition of size- and shape controlled Ag nanoparticles by varying the surface morphology of the electrode and by applying a step voltage, which consisted of the application of two consecutive different voltages. Using only silver deposition, we have successfully achieved the first LSPR-based multicolor EC device that enables reversible color changes, including three primary colors—cyan, magenta, and yellow—as well as transparent, black, and mirror in a single cell.