Charge transport at mid-gap in trans-(CH)x: An electrochemical study

J. H. Kaufman, Tze-chiang Chung, A. J. Heeger

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Electrochemical studies demonstrate that ∼300 ppm of charge (equal to the number of neutral solitons in undoped trans-(CH)x) is removed at mid-gap. These charges are transported through the polyacetylene electrode via hopping among states at the center of the energy gap, in agreement with Kivelson's theory. From analysis of the data, we have been able to determine the soliton creation energy, Es ≃ 0.5eV, which is in good agreement with the theoretical value, Es = (2/π)Δ.

Original languageEnglish (US)
Pages (from-to)585-589
Number of pages5
JournalSolid State Communications
Volume47
Issue number8
DOIs
StatePublished - Jan 1 1983

Fingerprint

Solitons
Charge transfer
Polyacetylenes
solitary waves
methylidyne
polyacetylene
Energy gap
Electrodes
electrodes
energy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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Charge transport at mid-gap in trans-(CH)x : An electrochemical study. / Kaufman, J. H.; Chung, Tze-chiang; Heeger, A. J.

In: Solid State Communications, Vol. 47, No. 8, 01.01.1983, p. 585-589.

Research output: Contribution to journalArticle

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AU - Chung, Tze-chiang

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AB - Electrochemical studies demonstrate that ∼300 ppm of charge (equal to the number of neutral solitons in undoped trans-(CH)x) is removed at mid-gap. These charges are transported through the polyacetylene electrode via hopping among states at the center of the energy gap, in agreement with Kivelson's theory. From analysis of the data, we have been able to determine the soliton creation energy, Es ≃ 0.5eV, which is in good agreement with the theoretical value, Es = (2/π)Δ.

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