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The role of water in the synthesis and performance of vapour phase polymerised PEDOT electrochromic devices

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dc.contributor.authorFabretto, M.
dc.contributor.authorZuber, K.
dc.contributor.authorHall, C.
dc.contributor.authorMurphy, P.
dc.contributor.authorGriesser, H.J.
dc.date.issued2009
dc.description.abstractParameters affecting the quality of vapour phase polymerised (VPP) PEDOT and their influence on electrochromic device performance were investigated. Specifically, the role of water during synthesis was examined and a polymerisation mechanism proposed. Paradoxically, water vapour is essential for PEDOT polymerisation, however, too high a loading leads to crystallite formation in the oxidant layer, rendering the oxidant inactive. Changes in water vapour affect the doping level of the polymer, presumably due to poor conjugation along the polymer's backbone during synthesis. The addition of a surfactant, PPG-ran-PEG, was studied using XPS. The surfactant inhibited oxidant crystal growth and slowed the rate of PEDOT polymerisation, reducing film defects and improving PEDOT conductivity. Controlling and optimising the levels of water vapour and surfactant during synthesis resulted in reproducible, high conductivity, high optical switch, PEDOT films. Finally, complementary dual-polymer electrochromic devices utilising (pre- and post-process-enhanced) VPP PEDOT and PMAS (control) were fabricated and changes in switching transmission evaluated.
dc.identifier.citationJournal of Materials Chemistry, 2009; 19(42):7871-7878
dc.identifier.doi10.1039/b912324e
dc.identifier.issn0959-9428
dc.identifier.issn1364-5501
dc.identifier.orcidZuber, K. [0000-0003-0579-1983]
dc.identifier.urihttps://hdl.handle.net/11541.2/112805
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.relation.granthttp://purl.org/au-research/grants/arc/LP0668876
dc.rightsCopyright 2009 Royal Society of Chemistry
dc.source.urihttps://doi.org/10.1039/b912324e
dc.subjectconducting polymers
dc.subjectconductive films
dc.subjectconductive polymer
dc.titleThe role of water in the synthesis and performance of vapour phase polymerised PEDOT electrochromic devices
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915910910501831

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