Electrical conductivity of doped poly(4,4′-didecyl-2,2′-bithiophene) at low temperatures

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作者
Barta, P. [1 ]
Niziol, S. [1 ]
Zagorska, M. [1 ]
Pron, A. [1 ]
机构
[1] AGH, Krakow, Poland
关键词
Composition effects - Electric conductivity measurement - Electron transport properties - Ions - Iron compounds - Low temperature effects - Magnetic properties - Mathematical models - Molecular structure - Quantum theory - Sulfur compounds - Thin films;
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摘要
Samples of soluble conducting polymers with regular chain structure were subjected to electrical transport measurements. Thin films of PDDBTs were doped with FeCl4- ion to different doping levels. The van der Pauw technique was used in electrical conductivity measurements at temperature range from 4.2 K to 300 K. For high dopant concentration one can observe abrupt decrease in conductivity below certain temperature (30 K). Value of this temperature fully corresponds to the temperature, where magnetic interactions appear. In addition, results of the conductivity measurements were compared with analogue ones for poly(3-alkylthiophenes).
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页码:4968 / 4972
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