Photoexcitation dynamics in C60-doped PPV under bias illumination

Paul A. Lane; Martin Liess; Xing Wei; Z. Valy Vardeny; Zakya H. Kafafi

doi:10.1117/12.262972

16 December 1996 Photoexcitation dynamics in C₆₀-doped PPV under bias illumination

Paul A. Lane, Martin Liess, Xing Wei, Z. Valy Vardeny, Zakya H. Kafafi

Proceedings Volume 2854, Fullerenes and Photonics III; (1996) https://doi.org/10.1117/12.262972
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We have studied photoexcitation dynamics in pristine and C60-doped PPV films under bias illumination by photoinduced absorption (PA), optically-detected magnetic resonance (ODMR), and electromodulated PA (EPA). Intrachain polaron pair species are the dominant excitations under these conditions. The polaron pairs on the polymer chains are identified in ODMR by the existence of an anisotropic spin- exchange interaction; their characteristics absorption spectrum is blueshifted with respect to that of isolated polarons by approximately 0.4 eV. We also identified the PPV⁺/C60 complexes by EPA spectroscopy.

Citation Download Citation

Paul A. Lane, Martin Liess, Xing Wei, Z. Valy Vardeny, and Zakya H. Kafafi "Photoexcitation dynamics in C₆₀-doped PPV under bias illumination", Proc. SPIE 2854, Fullerenes and Photonics III, (16 December 1996); https://doi.org/10.1117/12.262972

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