Direct observation of charge-induced -electronic structural changes in a conjugated polymer

M. Lögdlund*, R. Lazzaroni, S. Stafström, W. R. Salaneck, J. L. Brédas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

111 Scopus citations


Ultraviolet photoelectron spectroscopy (UPS) has been used to observe changes in the -band structure in poly(3-hexylthiphene) induced by doping using NOPF6. The charge-induced movement of the Fermi energy and a finite density of electronic states at the Fermi energy in the most highly doped (saturated) material are seen unambiguously with UPS for the first time in a conjugated polymer. The results imply the existence of a new, recently predicted theoretically, but hitherto unobserved, polaron-lattice state of this conjugated polymer at the saturation-doping level.

Original languageEnglish (US)
Pages (from-to)1841-1844
Number of pages4
JournalPhysical Review Letters
Issue number17
StatePublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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