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arXiv · 1009.4328

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

C. S. Suchand Sangeeth·Manu Jaiswal·Reghu Menon
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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 critical regime of the metal-insulator transition, depending on the subtle details of morphology. The extent of electrical-connectivity in 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.

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C. S. Suchand Sangeeth, Manu Jaiswal, Reghu Menon. 2010-10-05. Correlation of morphology and charge transport in poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT-PSS) films. https://doi.org/10.1088/0953-8984%2F21%2F7%2F072101

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