Three-dimensional inhomogeneities in PEDOT:PSS Films

M. Kemerink; S. Timpanaro; M.M. Kok, de; E.A. Meulenkamp; F.J. Touwslager

doi:10.1021/jp0464674

Three-dimensional inhomogeneities in PEDOT:PSS Films

M. Kemerink
, S. Timpanaro
, M.M. Kok, de
, E.A. Meulenkamp
, F.J. Touwslager

Materials to Optoelectronic Devices

Research output: Contribution to journal › Article › Academic › peer-review

193 Citations (Scopus)

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Abstract

Spin-cast PEDOT/PSS film are investigated using scanning probe-based spectroscopic techniques. The films are found to consist of relatively well-conducting islands that are embedded in a less conductive matrix. A scanning-tunneling microscope-based method is developed to obtain three-dimensional conductivity images with nanometer resolution. Order-of-magnitude variations in the film conductivity are observed in all spatial directions. In addition, charge transport in the normal direction depends on the injection spot and is found to be ohmic or space-charge-limited. We found that both the morphology and the conductivity of the top layer differ substantially from those in the bulk, which is attributed to an enhanced PSS content in the top layer.

Original language	English
Pages (from-to)	18820-18825
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	49
DOIs	https://doi.org/10.1021/jp0464674
Publication status	Published - 2004

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title = "Three-dimensional inhomogeneities in PEDOT:PSS Films",

abstract = "Spin-cast PEDOT/PSS film are investigated using scanning probe-based spectroscopic techniques. The films are found to consist of relatively well-conducting islands that are embedded in a less conductive matrix. A scanning-tunneling microscope-based method is developed to obtain three-dimensional conductivity images with nanometer resolution. Order-of-magnitude variations in the film conductivity are observed in all spatial directions. In addition, charge transport in the normal direction depends on the injection spot and is found to be ohmic or space-charge-limited. We found that both the morphology and the conductivity of the top layer differ substantially from those in the bulk, which is attributed to an enhanced PSS content in the top layer.",

author = "M. Kemerink and S. Timpanaro and \{Kok, de\}, M.M. and E.A. Meulenkamp and F.J. Touwslager",

year = "2004",

doi = "10.1021/jp0464674",

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T1 - Three-dimensional inhomogeneities in PEDOT:PSS Films

AU - Kemerink, M.

AU - Timpanaro, S.

AU - Kok, de, M.M.

AU - Meulenkamp, E.A.

AU - Touwslager, F.J.

PY - 2004

Y1 - 2004

N2 - Spin-cast PEDOT/PSS film are investigated using scanning probe-based spectroscopic techniques. The films are found to consist of relatively well-conducting islands that are embedded in a less conductive matrix. A scanning-tunneling microscope-based method is developed to obtain three-dimensional conductivity images with nanometer resolution. Order-of-magnitude variations in the film conductivity are observed in all spatial directions. In addition, charge transport in the normal direction depends on the injection spot and is found to be ohmic or space-charge-limited. We found that both the morphology and the conductivity of the top layer differ substantially from those in the bulk, which is attributed to an enhanced PSS content in the top layer.

AB - Spin-cast PEDOT/PSS film are investigated using scanning probe-based spectroscopic techniques. The films are found to consist of relatively well-conducting islands that are embedded in a less conductive matrix. A scanning-tunneling microscope-based method is developed to obtain three-dimensional conductivity images with nanometer resolution. Order-of-magnitude variations in the film conductivity are observed in all spatial directions. In addition, charge transport in the normal direction depends on the injection spot and is found to be ohmic or space-charge-limited. We found that both the morphology and the conductivity of the top layer differ substantially from those in the bulk, which is attributed to an enhanced PSS content in the top layer.

U2 - 10.1021/jp0464674

DO - 10.1021/jp0464674

M3 - Article

SN - 1520-6106

VL - 108

SP - 18820

EP - 18825

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 49

ER -

Three-dimensional inhomogeneities in PEDOT:PSS Films

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