Doping-induced luminescence in polyacetylene

J. Kürti, H. Kuzmany

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In situ measurements of the emission of secondary radiation from trans-polyacetylene during electrochemical p and n doping are reported. The luminescencelike emission was observed to be reversible with the doping and undoping process, and it was independent with respect to three different electrolyte systems: Li+ClO4- in sulfolane, Li+ClO4- in propylenecarbonate, and Li+BF4- in propylenecarbonate, which proves its origin from the polymer backbone. No reversible luminescence occurs during n doping. The intensity of the luminescence spectrum has a maximum for the laser excitation in the yellow green spectral region. The maximum position of the luminescence spectrum shifts by about 3000 cm-1 for a shift of the excitation energy of 7000 cm-1. The observed luminescence phenomena are explained by the polaron-doping mechanism in the disordered part of the sample and photoselective resonance process. A quantitative description is presented by calculating the energy for polaron levels by the Ḧckel method including geometry relaxation.

Original languageEnglish
Pages (from-to)5634-5639
Number of pages6
JournalPhysical Review B
Volume38
Issue number8
DOIs
Publication statusPublished - 1988

Fingerprint

Polyacetylenes
polyacetylene
Luminescence
Doping (additives)
luminescence
Gene Conversion
Laser excitation
Excitation energy
shift
in situ measurement
Electrolytes
excitation
Polymers
electrolytes
Radiation
Geometry
energy
polymers
radiation
geometry

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Doping-induced luminescence in polyacetylene. / Kürti, J.; Kuzmany, H.

In: Physical Review B, Vol. 38, No. 8, 1988, p. 5634-5639.

Research output: Contribution to journalArticle

Kürti, J. ; Kuzmany, H. / Doping-induced luminescence in polyacetylene. In: Physical Review B. 1988 ; Vol. 38, No. 8. pp. 5634-5639.
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