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

Yoshinori Nishikitani, Denis Fichou, Gilles Horowitz, Francis Garnier

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)267-273
Number of pages7
JournalSynthetic Metals
Volume31
Issue number2
DOIs
Publication statusPublished - 1989
Externally publishedYes

Fingerprint

Carrier mobility
carrier mobility
Copper
inclusions
copper
Carrier concentration
augmentation
Polymers
polymers
Current voltage characteristics
Platinum
Nickel
Electric space charge
chutes
Gold
Charge transfer
space charge
electric contacts
platinum
charge transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper. / Nishikitani, Yoshinori; Fichou, Denis; Horowitz, Gilles; Garnier, Francis.

In: Synthetic Metals, Vol. 31, No. 2, 1989, p. 267-273.

Research output: Contribution to journalArticle

Nishikitani, Yoshinori ; Fichou, Denis ; Horowitz, Gilles ; Garnier, Francis. / Carrier mobility enhancement in semiconducting poly(3-methylthiophene) by electrochemical inclusion of cooper. In: Synthetic Metals. 1989 ; Vol. 31, No. 2. pp. 267-273.
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