Delocalized polarons in self-assembled poly(3-hexyl thiophene) nanocrystals

R. Österbacka*, C. P. An, X. M. Jiang, Z. V. Vardeny

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

39 Citeringar (Scopus)

Sammanfattning

We have studied the characteristic properties of charged excitations (polarons) in thin films of regioregular poly(3-hexylthiophene) (RRPHT) by optical spectroscopies. We found that the increased interchain coupling that exists in self-assembled lamellae in these films drastically changes the properties of the polaron excitations. The traditional self-localized polaron in one-dimension delocalizes in two-dimensions, resulting in a much-reduced relaxation energy and multiple absorption bands, the most dominant being in the mid-infrared (IR) spectral range. Also it has associated IR and Raman active vibrations with reverse absorption bands [anti-resonances (AR)] compared with the continuum electronic band. The AR are attributed to the electron-phonon interaction.

OriginalspråkEngelska
Sidor (från-till)317-320
Antal sidor4
TidskriftSynthetic Metals
Volym116
Utgåva1-3
DOI
StatusPublicerad - 1 jan 2001
MoE-publikationstypA1 Tidskriftsartikel-refererad

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