Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper

Yoshinori Nishikitani; Denis Fichou; Gilles Horowitz; Francis Garnier

doi:10.1016/0379-6779(89)90821-7

Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper

Yoshinori Nishikitani^*, Denis Fichou, Gilles Horowitz, Francis Garnier

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Films of poly(3-methylthiophene) (PMeT) are electrochemically grown onto platinum layers sputtered on glass slides. The PMeT is then electrochemically undoped, and gold contacts are vacuum evaporated on the polymer. The current-voltage characteristics of the PMeT-Au contacts show a clear transition between an Ohmic regime and a space-charge-limited current. This allows the mobility and carrier density of undoped PMeT to be determined independently. An enhancement of the mobility by a factor of 100 is observed after electrochemical inclusion of copper, whereas the carrier density is not changed. Such behaviour is not obtained when copper is replaced by nickel. A tentative explanation of this phenomenon is the formation of bonds between copper and the polymer chains, which would increase the interchain charge transfer.

Original language	English
Pages (from-to)	267-273
Number of pages	7
Journal	Synthetic Metals
Volume	31
Issue number	2
DOIs	https://doi.org/10.1016/0379-6779(89)90821-7
Publication status	Published - 1989
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Polymers and Plastics

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title = "Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper",

abstract = "Films of poly(3-methylthiophene) (PMeT) are electrochemically grown onto platinum layers sputtered on glass slides. The PMeT is then electrochemically undoped, and gold contacts are vacuum evaporated on the polymer. The current-voltage characteristics of the PMeT-Au contacts show a clear transition between an Ohmic regime and a space-charge-limited current. This allows the mobility and carrier density of undoped PMeT to be determined independently. An enhancement of the mobility by a factor of 100 is observed after electrochemical inclusion of copper, whereas the carrier density is not changed. Such behaviour is not obtained when copper is replaced by nickel. A tentative explanation of this phenomenon is the formation of bonds between copper and the polymer chains, which would increase the interchain charge transfer.",

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T1 - Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper

AU - Nishikitani, Yoshinori

AU - Fichou, Denis

AU - Horowitz, Gilles

AU - Garnier, Francis

PY - 1989

Y1 - 1989

N2 - Films of poly(3-methylthiophene) (PMeT) are electrochemically grown onto platinum layers sputtered on glass slides. The PMeT is then electrochemically undoped, and gold contacts are vacuum evaporated on the polymer. The current-voltage characteristics of the PMeT-Au contacts show a clear transition between an Ohmic regime and a space-charge-limited current. This allows the mobility and carrier density of undoped PMeT to be determined independently. An enhancement of the mobility by a factor of 100 is observed after electrochemical inclusion of copper, whereas the carrier density is not changed. Such behaviour is not obtained when copper is replaced by nickel. A tentative explanation of this phenomenon is the formation of bonds between copper and the polymer chains, which would increase the interchain charge transfer.

AB - Films of poly(3-methylthiophene) (PMeT) are electrochemically grown onto platinum layers sputtered on glass slides. The PMeT is then electrochemically undoped, and gold contacts are vacuum evaporated on the polymer. The current-voltage characteristics of the PMeT-Au contacts show a clear transition between an Ohmic regime and a space-charge-limited current. This allows the mobility and carrier density of undoped PMeT to be determined independently. An enhancement of the mobility by a factor of 100 is observed after electrochemical inclusion of copper, whereas the carrier density is not changed. Such behaviour is not obtained when copper is replaced by nickel. A tentative explanation of this phenomenon is the formation of bonds between copper and the polymer chains, which would increase the interchain charge transfer.

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Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper

Abstract

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