期刊
CHEMICAL PHYSICS LETTERS
卷 394, 期 4-6, 页码 339-343出版社
ELSEVIER
DOI: 10.1016/j.cplett.2004.07.035
关键词
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The influence of sorbitol on the nanometer-scale morphology of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) is investigated by scanning-tunneling microscopy. In all investigated films relatively well-conducting PEDOT particles are observed. with typical sizes of 10-50 nm, that are embedded in a less conductive PSS matrix. Addition of sorbitol to the casting solution is found to enhance the clustering of the PEDOT particles into larger domains. The observed morphologies are correlated to the macroscopic conductivity of the films, using an intuitive model. In addition, the morphology in the top layer of the films was found to differ substantially from the bulk morphology. (C) 2004 Elsevier B.V. All rights reserved.
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