Journal
MATERIALS LETTERS
Volume 117, Issue -, Pages 146-149Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.11.117
Keywords
DBEDOT; PEDOT:PSS; Thermal polymerization; Nanocomposites; Raman
Funding
- National Science Council of Taiwan [NSC-101-2221-E-151-037]
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In this paper we report a novel oxidant- and etching-free process for the preparation of conducting poly (3.4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) nanocomposite layers through thermal debromination polymerization; it involves depositing a solution of 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) and PSS in MeOH/H2O onto a flexible poly(ethylene terephthalate) (PET) substrate heated at 120 degrees C. SEM and TEM images revealed that the surface of the conducting PEDOT:PSS film featured PEDOT nanospheres wrapped in a coating of PSS. The Raman spectrum of the PEDOT:PSS nanosphere layer featured a signal for symmetrical stretching at 1450-1434 cm(-1); this vibration was sensitive to oxidizing (doping) and reducing (de-doping) behavior. This strategy has potential use in roll-to-roll processing of flexible organic optoelectronic devices. (C) 2013 Elsevier B.V. All rights reserved.
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