Thermal stability of conductivity in electron irradiated blends of FeCl3-doped poly(3-octylthiophene) and ethylenevinylacetate

Eero Punkka; Jukka Laakso; Henrik Stubb; Pekka Kuivalainen

doi:10.1016/0379-6779(91)91541-H

Thermal stability of conductivity in electron irradiated blends of FeCl₃-doped poly(3-octylthiophene) and ethylenevinylacetate

Eero Punkka, Jukka Laakso, Henrik Stubb, Pekka Kuivalainen

VTT Technical Research Centre of Finland

Neste Oyj

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

The stability of conductivity in FeCl3-doped polymer blends of poly(3-octylthiophene) and ethylenevinylacetate has been studied over a wide temperature range (10–410 K). In contrast to the large conformational changes in undoped materials the dc conductivity behaviour was found to be practically reversible and stable up to the melting point of ethylenevinylacetate (350 K). A spontaneous conductivity increase above 350 K was interpreted to be related to additional doping by dopant molecules trapped inside a network of partially crosslinked poly(3-octylthiophene). Crosslinking of matrix polymer by electron irradiation did not improve the stability of conductivity. The electrical properties of heavily irradiated samples indicated an increase in the average size of conducting islands which was related to an irradiation-induced crosslinking of poly(3-octylthiophene) aggregates.

Original language	English
Pages (from-to)	983-988
Journal	Synthetic Metals
Volume	41
Issue number	3
DOIs	https://doi.org/10.1016/0379-6779(91)91541-H
Publication status	Published - 1991
MoE publication type	A1 Journal article-refereed

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title = "Thermal stability of conductivity in electron irradiated blends of FeCl3-doped poly(3-octylthiophene) and ethylenevinylacetate",

abstract = "The stability of conductivity in FeCl3-doped polymer blends of poly(3-octylthiophene) and ethylenevinylacetate has been studied over a wide temperature range (10–410 K). In contrast to the large conformational changes in undoped materials the dc conductivity behaviour was found to be practically reversible and stable up to the melting point of ethylenevinylacetate (350 K). A spontaneous conductivity increase above 350 K was interpreted to be related to additional doping by dopant molecules trapped inside a network of partially crosslinked poly(3-octylthiophene). Crosslinking of matrix polymer by electron irradiation did not improve the stability of conductivity. The electrical properties of heavily irradiated samples indicated an increase in the average size of conducting islands which was related to an irradiation-induced crosslinking of poly(3-octylthiophene) aggregates.",

author = "Eero Punkka and Jukka Laakso and Henrik Stubb and Pekka Kuivalainen",

note = "Project code: puo0024",

year = "1991",

doi = "10.1016/0379-6779(91)91541-H",

language = "English",

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pages = "983--988",

journal = "Synthetic Metals",

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TY - JOUR

T1 - Thermal stability of conductivity in electron irradiated blends of FeCl3-doped poly(3-octylthiophene) and ethylenevinylacetate

AU - Punkka, Eero

AU - Laakso, Jukka

AU - Stubb, Henrik

AU - Kuivalainen, Pekka

N1 - Project code: puo0024

PY - 1991

Y1 - 1991

N2 - The stability of conductivity in FeCl3-doped polymer blends of poly(3-octylthiophene) and ethylenevinylacetate has been studied over a wide temperature range (10–410 K). In contrast to the large conformational changes in undoped materials the dc conductivity behaviour was found to be practically reversible and stable up to the melting point of ethylenevinylacetate (350 K). A spontaneous conductivity increase above 350 K was interpreted to be related to additional doping by dopant molecules trapped inside a network of partially crosslinked poly(3-octylthiophene). Crosslinking of matrix polymer by electron irradiation did not improve the stability of conductivity. The electrical properties of heavily irradiated samples indicated an increase in the average size of conducting islands which was related to an irradiation-induced crosslinking of poly(3-octylthiophene) aggregates.

AB - The stability of conductivity in FeCl3-doped polymer blends of poly(3-octylthiophene) and ethylenevinylacetate has been studied over a wide temperature range (10–410 K). In contrast to the large conformational changes in undoped materials the dc conductivity behaviour was found to be practically reversible and stable up to the melting point of ethylenevinylacetate (350 K). A spontaneous conductivity increase above 350 K was interpreted to be related to additional doping by dopant molecules trapped inside a network of partially crosslinked poly(3-octylthiophene). Crosslinking of matrix polymer by electron irradiation did not improve the stability of conductivity. The electrical properties of heavily irradiated samples indicated an increase in the average size of conducting islands which was related to an irradiation-induced crosslinking of poly(3-octylthiophene) aggregates.

U2 - 10.1016/0379-6779(91)91541-H

DO - 10.1016/0379-6779(91)91541-H

M3 - Article

SN - 0379-6779

VL - 41

SP - 983

EP - 988

JO - Synthetic Metals

JF - Synthetic Metals

IS - 3

ER -

Thermal stability of conductivity in electron irradiated blends of FeCl3-doped poly(3-octylthiophene) and ethylenevinylacetate

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Thermal stability of conductivity in electron irradiated blends of FeCl₃-doped poly(3-octylthiophene) and ethylenevinylacetate