Multicolored electrochromism polymers: Structures and devices

doi:10.1021/cm049669l

2004-07-20

799

PRE

DOI：10.1021/cm049669l

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摘要

En 中文

A review of electrochromic (EC) polymers and their applications in absorption/transmission, reflective, and patterned electrochromic devices (ECDs) is presented. Fundamental properties of EC materials such as optical contrast, coloration efficiency, switching speed, and stability are described along with the commonly used characterization methods. The origin of electrochromism in conjugated polymers is explained in terms of the electronic structure changes in the backbone upon doping/dedoping. The ability to tailor the EC properties of conjugated polymers and tune their color states via modification of the polymer structure is demonstrated. Multicolor electrochromic materials can be obtained by substitution of a parent polymer and controlled polymerization of comonomers and with blends and laminates of homopolymers. Absorption/transmission-type ECDs from complementarily colored polymers and reflective-type ECDs on metalized substrates are illustrated with several examples from the literature. Finally, several patterning methods that are promising for ECD applications are discussed. Examples of ECDs constructed from patterned electrodes using line-patterning, screen-printing, and metal vapor deposition techniques are investigated for their possible use in commercial applications.

Keyword:

POTENTIAL CONDUCTING POLYMERS

TUNGSTEN-OXIDE

HIGH-CONTRAST

PRUSSIAN BLUE

POLYANILINE

GAP

3,4-ETHYLENEDIOXYTHIOPHENE

REFLECTANCE

FILMS

REDOX

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期刊

Chemistry of Materials

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论文数:

2.8W

被引数:

11.4W

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