The effect of polymer crosslinking on the electrical properties of ethylenevinylacetate poly(3-actylthiophone) polymer blends

Eero Punkka, Jukka Laakso, Henrik Stubb, Pekka Kuivalainen

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Abstract

A study of the transport properties of a polymer blend consisting of poly(3-octylthiophene) (POT) and ethylenevinylacetate doped with
FeCl3 reveals a change in conductivity mechanism when the material is cross linked by electron irradiation. In heavily irradiated samples and in samples with a high POT content the temperature and the electric field dependences of the dc conductivity are in good agreement with the model of thermal-fluctuation-induced tunneling between metallic particles embedded in a dielectric matrix. In unirradiated samples with a low POT content, however, the data fit best the model of charging-energy-limited tunneling of a granular polymeric metal. These transport properties indicate an increase in the average size of the conducting particles as the polymer blend is cross linked.
Original languageEnglish
Pages (from-to)5914-5918
JournalPhysical Review B: Condensed Matter
Volume41
Issue number9
DOIs
Publication statusPublished - 1990
MoE publication typeA1 Journal article-refereed

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polymer blends
crosslinking
Polymer blends
Crosslinking
Transport properties
Polymers
Electric properties
electrical properties
Electron irradiation
polymers
transport properties
conductivity
Metals
Electric fields
electron irradiation
charging
conduction
electric fields
matrices
metals

Cite this

Punkka, Eero ; Laakso, Jukka ; Stubb, Henrik ; Kuivalainen, Pekka. / The effect of polymer crosslinking on the electrical properties of ethylenevinylacetate poly(3-actylthiophone) polymer blends. In: Physical Review B: Condensed Matter. 1990 ; Vol. 41, No. 9. pp. 5914-5918.
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abstract = "A study of the transport properties of a polymer blend consisting of poly(3-octylthiophene) (POT) and ethylenevinylacetate doped with FeCl3 reveals a change in conductivity mechanism when the material is cross linked by electron irradiation. In heavily irradiated samples and in samples with a high POT content the temperature and the electric field dependences of the dc conductivity are in good agreement with the model of thermal-fluctuation-induced tunneling between metallic particles embedded in a dielectric matrix. In unirradiated samples with a low POT content, however, the data fit best the model of charging-energy-limited tunneling of a granular polymeric metal. These transport properties indicate an increase in the average size of the conducting particles as the polymer blend is cross linked.",
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The effect of polymer crosslinking on the electrical properties of ethylenevinylacetate poly(3-actylthiophone) polymer blends. / Punkka, Eero; Laakso, Jukka; Stubb, Henrik; Kuivalainen, Pekka.

In: Physical Review B: Condensed Matter, Vol. 41, No. 9, 1990, p. 5914-5918.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - The effect of polymer crosslinking on the electrical properties of ethylenevinylacetate poly(3-actylthiophone) polymer blends

AU - Punkka, Eero

AU - Laakso, Jukka

AU - Stubb, Henrik

AU - Kuivalainen, Pekka

PY - 1990

Y1 - 1990

N2 - A study of the transport properties of a polymer blend consisting of poly(3-octylthiophene) (POT) and ethylenevinylacetate doped with FeCl3 reveals a change in conductivity mechanism when the material is cross linked by electron irradiation. In heavily irradiated samples and in samples with a high POT content the temperature and the electric field dependences of the dc conductivity are in good agreement with the model of thermal-fluctuation-induced tunneling between metallic particles embedded in a dielectric matrix. In unirradiated samples with a low POT content, however, the data fit best the model of charging-energy-limited tunneling of a granular polymeric metal. These transport properties indicate an increase in the average size of the conducting particles as the polymer blend is cross linked.

AB - A study of the transport properties of a polymer blend consisting of poly(3-octylthiophene) (POT) and ethylenevinylacetate doped with FeCl3 reveals a change in conductivity mechanism when the material is cross linked by electron irradiation. In heavily irradiated samples and in samples with a high POT content the temperature and the electric field dependences of the dc conductivity are in good agreement with the model of thermal-fluctuation-induced tunneling between metallic particles embedded in a dielectric matrix. In unirradiated samples with a low POT content, however, the data fit best the model of charging-energy-limited tunneling of a granular polymeric metal. These transport properties indicate an increase in the average size of the conducting particles as the polymer blend is cross linked.

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DO - 10.1103/PhysRevB.41.5914

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