Exciton and biexciton signatures in the femtosecond transient absorption of phenylene-based polymers and oligomers

D. McBranch, V. Klimov, B. Kraabel

Research output: Contribution to conference › Paper › peer-review

Abstract

The photophysics of conducting polymers from the poly(para-phenylene vinylene) (PPV) family are studied using femtosecond transient absorption to address several issues namely: the primary photoexcitation; interaction under high excitations; and biexciton signatures. The solutions and films of the PPV oligomers MEH-DSB and several soluble PPV derivatives are measured with similar results. The femtosecond differential transmission (DT) spectra in MEH-DSB show a positive band due to stimulated emission around 2.4 eV and a photoinduced absorption band from 1.3 to 2.0 eV.

Original languageEnglish
Pages62-63
Number of pages2
Publication statusPublished - 1998
EventProceedings of the 1998 International Quantum Electronics Conference - San Francisco, CA, USA
Duration: May 3 1998 → May 8 1998

Other

OtherProceedings of the 1998 International Quantum Electronics Conference
CitySan Francisco, CA, USA
Period5/3/98 → 5/8/98

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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