Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends

Heikki Isotalo, Jukka Laakso, Pekka Kuivalainen, Henrik Stubb, Jan-Erik Österholm, Paula Yli-Lahti

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Abstract

The results of an experimental study of the temperature (T) dependent dc conductivity σdc, T‐dependent thermoelectric power (TEP), and electron spin resonance in a new conducting polyethylenevinylacetate–polyoctylthiophene (EVAPOT) polymer blend doped with FeCl3 are presented. For a POT content of 20 wt% σdc (300 K) varies from 10−10 to 1 Ω−1 cm−1 with increasing doping, while σdc(T) fits σdc(T) = σ0 exp [– (T0/T)1/2], especially in highly conducting material. In the most heavily doped samples TEP shows metallic behaviour and the charge transport is described by the granular metal model. In lightly doped samples the T‐dependence of TEP follows the T−1‐law for band conduction in non‐degenerate crystalline or amorphous semiconductors. This is the first time the latter behaviour is found in conducting polymers.

Original languageEnglish
Pages (from-to)305-313
JournalPhysica Status Solidi B: Basic Research
Volume154
Issue number1
DOIs
Publication statusPublished - 1989
MoE publication typeA1 Journal article-refereed

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Thermoelectric power
Charge transfer
conduction
amorphous semiconductors
polymer blends
conducting polymers
Amorphous semiconductors
electron paramagnetic resonance
conduction bands
Conducting polymers
Polymer blends
Conduction bands
conductivity
Paramagnetic resonance
Metals
Doping (additives)
metals
Crystalline materials
temperature
Temperature

Cite this

Isotalo, H., Laakso, J., Kuivalainen, P., Stubb, H., Österholm, J-E., & Yli-Lahti, P. (1989). Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends. Physica Status Solidi B: Basic Research, 154(1), 305-313. https://doi.org/10.1002/pssb.2221540114
Isotalo, Heikki ; Laakso, Jukka ; Kuivalainen, Pekka ; Stubb, Henrik ; Österholm, Jan-Erik ; Yli-Lahti, Paula. / Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends. In: Physica Status Solidi B: Basic Research. 1989 ; Vol. 154, No. 1. pp. 305-313.
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abstract = "The results of an experimental study of the temperature (T) dependent dc conductivity σdc, T‐dependent thermoelectric power (TEP), and electron spin resonance in a new conducting polyethylenevinylacetate–polyoctylthiophene (EVAPOT) polymer blend doped with FeCl3 are presented. For a POT content of 20 wt{\%} σdc (300 K) varies from 10−10 to 1 Ω−1 cm−1 with increasing doping, while σdc(T) fits σdc(T) = σ0 exp [– (T0/T)1/2], especially in highly conducting material. In the most heavily doped samples TEP shows metallic behaviour and the charge transport is described by the granular metal model. In lightly doped samples the T‐dependence of TEP follows the T−1‐law for band conduction in non‐degenerate crystalline or amorphous semiconductors. This is the first time the latter behaviour is found in conducting polymers.",
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Isotalo, H, Laakso, J, Kuivalainen, P, Stubb, H, Österholm, J-E & Yli-Lahti, P 1989, 'Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends', Physica Status Solidi B: Basic Research, vol. 154, no. 1, pp. 305-313. https://doi.org/10.1002/pssb.2221540114

Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends. / Isotalo, Heikki; Laakso, Jukka; Kuivalainen, Pekka; Stubb, Henrik; Österholm, Jan-Erik; Yli-Lahti, Paula.

In: Physica Status Solidi B: Basic Research, Vol. 154, No. 1, 1989, p. 305-313.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Charge Transport in FeCl3‐Doped Polyethylenevinylacetate–Polyoctylthiophene Blends

AU - Isotalo, Heikki

AU - Laakso, Jukka

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AU - Stubb, Henrik

AU - Österholm, Jan-Erik

AU - Yli-Lahti, Paula

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AB - The results of an experimental study of the temperature (T) dependent dc conductivity σdc, T‐dependent thermoelectric power (TEP), and electron spin resonance in a new conducting polyethylenevinylacetate–polyoctylthiophene (EVAPOT) polymer blend doped with FeCl3 are presented. For a POT content of 20 wt% σdc (300 K) varies from 10−10 to 1 Ω−1 cm−1 with increasing doping, while σdc(T) fits σdc(T) = σ0 exp [– (T0/T)1/2], especially in highly conducting material. In the most heavily doped samples TEP shows metallic behaviour and the charge transport is described by the granular metal model. In lightly doped samples the T‐dependence of TEP follows the T−1‐law for band conduction in non‐degenerate crystalline or amorphous semiconductors. This is the first time the latter behaviour is found in conducting polymers.

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