Electrochromism

About: Electrochromism is a research topic. Over the lifetime, 13097 publications have been published within this topic receiving 294637 citations.

Soluble Alkyl-Substituted Poly(ethylenedioxythiophenes) as Electrochromic Materials

Abstract: It is shown that the oxidative solution polymerization of 2-tetradecylthieno[3,4-b]-1,4-dioxin results in soluble polymers with optical and redox properties similar to those of electrochemically prapared insoluble films

Photoelectrochemical study of thin anatase TiO 2 films prepared by metallorganic chemical vapor deposition

Abstract: Thin films of TiO{sub 2} have found application as antireflection coatings, transparent conductors, dielectrics, electrochromic films, and photoelectrodes. Titanium dioxide is also used as a self-cleaning coating on windows and tiles. Thin films of TiO{sub 2} have been prepared by metallorganic chemical vapor deposition. The resulting anatase films are highly resistive. By electrochemical doping, the donor density can easily be raised by two orders of magnitude, resulting in a conducting film. From optical and photocurrent measurements, an indirect bandgap of 3.26 eV is derived for polycrystalline anatase films. Electrolyte electroreflection reveals a direct optical transition of anatase at 3.8 eV. The anatase electrodes can be sensitized by zinc carboxyphenyl porphyrin.

Electrochromic mirrors having a signal light

Abstract: An improved electrochromic rearview mirror assembly for motor vehicles is disclosed that includes a signal light mounted behind the electrochromic mirror. The electrochromic mirror has a signal light area formed in its reflective coating by removing a portion of the reflective coating and aligning the signal light with this signal light area. The portion removed is laser ablated to leave lines devoid of reflective material separated by lines of the reflective material. The signal light area may be formed in the reflective coating of the electrochromic mirror regardless of whether the reflective coating is applied to the rear or front surface of the rear element of the electrochromic mirror. If the reflective coating is applied to the front surface of the rear element (i.e., the third surface), the reflective material used is also electrically conductive so as to function as one of the electrodes for the electrochromic mirror. In this case, the remaining lines of reflective material in the signal light area are in electrical contact with the remaining reflective and conductive layer on the third surface. The reflective layer forms an integral electrode in contact with the electrochromic media, and may be a single layer of a highly reflective material or may comprise a series of coatings where the outer coating is a highly reflecting material.