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Correlation of morphology and charge transport in poly(3,4- thylenedioxythiophene)-polystyrenesulfonic acid (PEDOT-PSS) films

Sangeeth, Suchand CS and Jaiswal, Manu and Menon, Reghu (2009) Correlation of morphology and charge transport in poly(3,4- thylenedioxythiophene)-polystyrenesulfonic acid (PEDOT-PSS) films. In: Journal of Physics: Condensed Matter, 21 (7). 072101-1.

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Official URL: http://www.iop.org/EJ/article/0953-8984/21/7/07210...

Abstract

A wide variation in the charge transport properties of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) films is attributed to the degree of phase segregation of the excess insulating polyanion. The results indicate that the charge transport in PEDOT-PSS can vary from hopping to the critical regime of the metal-insulator transition, depending on the subtle details of morphology. The extent of electrical connectivity in the films, directly obtained from a temperature-dependent high-frequency transport study, indicates various limiting factors to the transport, which are correlated with the phase separation process. The low temperature magnetotransport further supports this morphology-dependent transport scenario.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of Physics and IOP Publishing.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 12 Mar 2009 11:01
Last Modified: 19 Sep 2010 05:27
URI: http://eprints.iisc.ernet.in/id/eprint/19179

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