TY - JOUR
T1 - Molecular reorientation and structural changes in cosolvent-treated highly conductive PEDOT:PSS electrodes for flexible indium tin oxide-free organic electronics
AU - Palumbiny, Claudia M.
AU - Heller, Christoph
AU - Schaffer, Christoph J.
AU - Körstgens, Volker
AU - Santoro, Gonzalo
AU - Roth, Stephan V.
AU - Müller-Buschbaum, Peter
N1 - Publisher Copyright:
© 2014 American Chemical Society.
PY - 2014/6/26
Y1 - 2014/6/26
N2 - Cosolvent addition of glycerol (G) and the use of the cosolvent ethylene glycol (EG) increase the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films to values on the order of indium tin oxide conductivity. The underlying morphological changes are probed via scanning electron microscopy as well as advanced scattering techniques microfocused grazing incidence small- and wide-angle Xray scattering. The enhancement in conductivity is ascribed to fundamental morphological changes and molecular reorientation within crystalline domains. Thereby, the conductivity enhancement is directly correlated to domain ruptures toward smaller and more densely packed PEDOT domains together with an enhanced crystallinity, the removal of PSS molecules, and moreover a reorientation of the conjugated PEDOT molecules. The latter is reported and quantified here for PEDOT:PSS films for the first time.
AB - Cosolvent addition of glycerol (G) and the use of the cosolvent ethylene glycol (EG) increase the conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films to values on the order of indium tin oxide conductivity. The underlying morphological changes are probed via scanning electron microscopy as well as advanced scattering techniques microfocused grazing incidence small- and wide-angle Xray scattering. The enhancement in conductivity is ascribed to fundamental morphological changes and molecular reorientation within crystalline domains. Thereby, the conductivity enhancement is directly correlated to domain ruptures toward smaller and more densely packed PEDOT domains together with an enhanced crystallinity, the removal of PSS molecules, and moreover a reorientation of the conjugated PEDOT molecules. The latter is reported and quantified here for PEDOT:PSS films for the first time.
UR - http://www.scopus.com/inward/record.url?scp=84908374600&partnerID=8YFLogxK
U2 - 10.1021/jp501540y
DO - 10.1021/jp501540y
M3 - Article
AN - SCOPUS:84908374600
SN - 1932-7447
VL - 118
SP - 13598
EP - 13606
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 25
ER -