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Title
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Effects of pellet morphology and ozone-treatment on the electrical conductivity of pressed poly(3-pentylthiophene) powder
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Materials chemistry and physics. - Lausanne, 1983, currens
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Publication
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Lausanne
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2012
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ISSN
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0254-0584
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DOI
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10.1016/J.MATCHEMPHYS.2011.12.018
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Volume/pages
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132
:2-3
(2012)
, p. 823-831
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ISI
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000301083800086
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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