Optical excitations in poly(2,5-thienylene vinylene)

A. J. Brassett, N. F. Colaneri, D. D.C. Bradley, R. A. Lawrence, R. H. Friend, H. Murata, S. Tokito, T. Tsutsui, S. Saito

    Research output: Contribution to journalArticlepeer-review

    71 Scopus citations


    We present the results of spectroscopic studies of the electronic structure of the conjugated polymer poly(2,5-thienylene vinylene). Photoexcitation above the band gap at 1.8 eV gives rise to two transient absorption peaks at 0.44 and 1.0 eV that are associated with bipolarons that live for times of order a few milliseconds at 80 K. Photoluminescence, comparable in intensity to the Raman scattering, is found at energies above the band edge, and we assign this to a hot recombination process. We also report the Raman spectrum, and make a preliminary assignment of the main vibrational modes. Three of the four main peaks disperse as the excitation wavelength is varied. We discuss these results and compare them with those previously reported for a related polymer, poly-(p-phenylene vinylene). © 1990 The American Physical Society.
    Original languageEnglish (US)
    JournalPhysical Review B
    Issue number15
    StatePublished - Jan 1 1990

    Bibliographical note

    Generated from Scopus record by KAUST IRTS on 2019-11-27


    Dive into the research topics of 'Optical excitations in poly(2,5-thienylene vinylene)'. Together they form a unique fingerprint.

    Cite this