Time-resolved photocarrier generation in conjugated polymers

Arthur Dogariu, Daniel Moses, Alan J. Heeger

Research output: Contribution to journalConference articlepeer-review

Abstract

We demonstrate ultrafast (100 fs) carrier generation in poly(phenylene vinylene), PPV, and poly[2-methoxy-5-(2-ethyl-hexyloxy)-(phenylene vinylene)], MEH-PPV, by using femtosecond transient spectroscopy in the mid-IR in order to probe the infrared active vibrational active (IRAV) modes. The 10% carrier generation quantum efficiency in MEH-PPV with no electric field applied, implies primary photogeneration of charge carriers. The recombination dynamics in PPV and MEH-PPV indicate that the carrier lifetime is sensitive to the strength of the interchain interaction.

Original languageEnglish (US)
Pages (from-to)417-422
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3797
DOIs
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 Organic Light-Emitting Materials and Devices III - Denver, CO, USA
Duration: Jul 19 1999Jul 21 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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