Asahi Glass Company, Limited

Nippon Oil Company

Tetsuya Seike

Junichi Nagai

Hiroshi Kobayashi

Nobuyuki Kuroda

Yoshinori Nishikitani

Takaya Kubo

An electrochromic device of wholly solid type comprising a transparent substrate and a transparent electroconductive film formed on the substrate, and having an oxidation color forming oxide, a cation conductive layer as an electrolyte, a reduction color forming oxide and a transparent electroconductive film, formed sequentially on said transparent electroconductive film formed on the substrate, wherein: (1) the oxidation color forming oxide is a p-type semiconductor of nickel oxide or cobalt oxide, (2) the cation conductive layer has OH groups showing a peak at about 3,300 (1/cm) in its infrared reflectance spectrum and is made of proton conductive SbO.sub.c wherein 1.3.ltoreq.c.ltoreq.2.7, or at least one lithium conductive lithium-containing oxide of LiO.sub.d MO.sub.e wherein 0.01.ltoreq.d.ltoreq.1.0, 1.3.ltoreq.e.ltoreq.2.7, and M is an element selected from the group consisting of Nb, Sb, B, P, Si, Ge, Al, Ce, La and Zr and (3) the reduction color forming oxide is tungsten oxide, molybdenum oxide or titanium oxide.

Electrochromic device and multilayer glazing

A counterelectrode for a smart window contains a transparent electrically conductive substrate and a plurality of electrically conductive dots arrayed on the transparent electrically conductive substrate. Each of the electrically conductive dots contains fine particles having capacitance of not less than 1 farad/g or fine particles capable of storing electrical charge of not less than 1 coulomb/g. A smart window contains the aforementioned counterelectrode.

Counterelectrode for smart window and smart window

Growing community of inventors

Tokyo, Japan

Tetsuya Seike