Growth of poly(3,4‐ethylenedioxythiophene) films prepared by base‐inhibited vapor phase polymerization |
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| Authors: | Jörgen Metsik Kristjan Saal Uno Mäeorg Rünno Lõhmus Silver Leinberg Hugo Mändar Margus Kodu Martin Timusk |
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| Affiliation: | 1. Institute of Physics, University of Tartu, , 51014 Tartu, Estonia;2. Institute of Chemistry, University of Tartu, , 50411 Tartu, Estonia;3. Estonian Nanotechnology Competence Center, , 51014 Tartu, Estonia |
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| Abstract: | Transparent [90% transmittance at 550 nm at a sheet resistance (Rs) of 279 Ω sq?1] poly(3,4‐ethylenedioxythiophene) (PEDOT) films with electrical conductivities up to 1354 S cm?1 are prepared using base‐inhibited vapor phase polymerization at atmospheric pressure. The influence of reaction conditions, such as temperature and growth time, on the film formation is investigated. A simple and convenient two‐electrode method is used for the in situ measurement of resistance, enabling to investigate the growth mechanism of polymer films and the influence of different parameters (relative humidity and the amount of oxidant) on the film growth. Low humidity exerts a detrimental effect on film growth and conductivity. In situ Rs measurements suggest that a large structural change occurs upon washing the PEDOT‐oxidant film. © 2014 Wiley Periodicals, Inc. J Polym Sci Part B: Polym. Phys. 2014 , 52, 561–571 |
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| Keywords: | conducting polymers transparency thin films |
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