Fabricating red–blue-switching dual polymer electrochromic devices using room temperature ionic liquid
In this work, room temperature ionic liquid (RTIL)—1-butyl-3-methyl-imidazolium hexafluorophosphate ([BMIM]PF 6)—was employed to fabricate dual polymer electrochromic devices (DPECDs). [BMIM]PF 6 was used as the electrolyte both in the electrochemical synthesis of conducting polymers (CPs) and in th...
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Published in | Solar energy materials and solar cells Vol. 93; no. 5; pp. 564 - 570 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.05.2009
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | In this work, room temperature ionic liquid (RTIL)—1-butyl-3-methyl-imidazolium hexafluorophosphate ([BMIM]PF
6)—was employed to fabricate dual polymer electrochromic devices (DPECDs). [BMIM]PF
6 was used as the electrolyte both in the electrochemical synthesis of conducting polymers (CPs) and in the fabrication of DPECDs. The electrochemically deposited poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(3-methylthiophene) (PMeT) were employed to serve as two complementary coloring electrochromic thin films. Through combining these two electrochromic layers, the assembled DPECDs were found to switch between deep red and deep blue, which are two primary colors for a display. By employing RTIL as electrolyte, the devices retained 65% of their optical contrast and electroactivity after 5×10
3 deep double potential steps, showing enhanced stability and durability. The DPECDs also exhibited stable electrochromic performance, with a maximum optical contrast of 26% at 665
nm, and achieved a high coloring efficiency of 460
cm
2
C
–1. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0927-0248 1879-3398 |
DOI: | 10.1016/j.solmat.2008.11.054 |