Transports in blends of conducting polymers

doi:10.1016/0379-6779(94)02439-6

Synthetic Metals

Volume 69, Issues 1–3, 1 March 1995, Pages 255-258

https://doi.org/10.1016/0379-6779(94)02439-6 Get rights and content

Abstract

We investigated the transport properties of solution-processed conductive polymer blends of polyaniline-(camhpor sulfonic acid), PANI-CSA, with insulating polymethylmethacrylate (PMMA), as a function of various volume fraction (ƒ) of PANI-CSA. Due to the phase separated morphology and the fibrillar geometry of percolating objects, a self-assembled PANI-CSA network in insulating matrix shows extremely low percolation threshold (ƒ_c ≈ 0.003). The characteristic metallic properties of pure PANI-CSA, such as positive temperature coefficient of resistivity at high temperature, linear temperature dependence of thermoelectric power, and frequency independent ac conductivity, are retained in PANI-CSA/PMMA blends down to ƒ_c. At low temperature, the hopping transports through the conducting polymer network depends on the volume fraction of PANI-CSA in blends and its network structure.

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Furthermore, the bandgap of the primary particles is expected to be analogous to that of semiconductors such as Si, and confinement by electron localization is also expected to occur in the metallic regions. To observe how a metallic region and the networking structures ∼ using electromigration and electron beam lithography [3,8,16–18]. Electromigration is an attractive method for fabricating nanometer-gap electrodes [2].
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Transports in blends of conducting polymers

Abstract

Int. J. Electronics

Phsyca A

Phys. Rev. B

Phys. Rev. B

Phys. Rev. Lett.

Macromolecules

Polymer Commun.

The Physics of Amorphous Solids

Synth. Met.

Synth. Met.

Phys. Rev. B

Macromolecules

Synth. Met.

Introduction to Percolation Theory