Title
Effects of pellet morphology and ozone-treatment on the electrical conductivity of pressed poly(3-pentylthiophene) powder Effects of pellet morphology and ozone-treatment on the electrical conductivity of pressed poly(3-pentylthiophene) powder
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Lausanne ,
Subject
Physics
Source (journal)
Materials chemistry and physics. - Lausanne, 1983, currens
Volume/pages
132(2012) :2-3 , p. 823-831
ISSN
0254-0584
ISI
000301083800086
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Impedance and current-voltage spectral measurements have been carried out on the Au/poly(3-pentylthiophene)/Au sandwich system in which the polymer was in the form of a pressed powder. The device shows an ohmic dc resistance. The specific conductivity of the material was in the range of insulators. The investigated sandwich system displays a relationship between the specific conductivity and the polymer thickness which is characteristic for molecular-scale disordered materials. Modification of the polymer by gaseous ozone in relatively high concentration causes a significant increase of the specific conductivity. Ozone treatment leads to p-doping of the polymer resulting in a temporary increase in conductivity as well as a modification of the morphology; the latter is stable and results in a permanent increase of the sample conductivity. (C) 2011 Elsevier B.V. All rights reserved.
E-info
https://repository.uantwerpen.be/docman/iruaauth/6ae41e/c9c1494.pdf
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