Fast Switching ITO Free Electrochromic Devices

被引：103

作者：

Jensen, Jacob ^{[1
]}

Hosel, Markus ^{[1
]}

Kim, Inyoung ^{[2
]}

Yu, Jong-Su ^{[2
]}

Jo, Jeongdai ^{[2
]}

Krebs, Frederik C. ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

[2] Korea Inst Machinery & Mat, Dept Printed Elect, Taejon 305343, South Korea

来源：

ADVANCED FUNCTIONAL MATERIALS | 2014年 / 24卷 / 09期

关键词：

electrochromic polymers; electrochromic devices; PEDOT:PSS; silver grid electrodes; ITO free; CONDUCTING POLYMERS; PERFORMANCE; STABILITY; ELECTROCHEMISTRY; DEGRADATION; OXIDATION;

D O I：

10.1002/adfm.201302320

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Indium-doped tin oxide free electrochromic devices are prepared by coating electrochromic polymers onto polyethylene terephthalate substrates encompassing two different silver grids as electrodes. One design comprises a flexoprinted highly conductive silver grid electrode, yielding electrochromic devices with a response time of 2 s for an optical contrast of 27%. The other design utilizes an embedded silver grid electrode whereupon response times of 0.5 s for a 30% optical contrast are realized when oxidizing the device. A commercially available conductive poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate acid) formulation (PEDOT:PSS) is coated onto the silver grids as a charge balancing polymer, and is in this setting found to be superior to a polypyrrole previously employed in electrochromic devices. In addition, the PEDOT:PSS layer increases the conductivity in the hexagonal grid structure.

引用

页码：1228 / 1233

页数：6

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