Time-resolved photocarrier generation in conjugated polymers

Arthur Dogariu; Daniel Moses; Alan J. Heeger

doi:10.1117/12.372738

17 December 1999 Time-resolved photocarrier generation in conjugated polymers

Arthur Dogariu, Daniel Moses, Alan J. Heeger

Proceedings Volume 3797, Organic Light-Emitting Materials and Devices III; (1999) https://doi.org/10.1117/12.372738
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Arthur Dogariu, Daniel Moses, and Alan J. Heeger "Time-resolved photocarrier generation in conjugated polymers", Proc. SPIE 3797, Organic Light-Emitting Materials and Devices III, (17 December 1999); https://doi.org/10.1117/12.372738

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