Intermediate polaron pairs formed in the process of charge carrier recombination in poly(p-phenylene vinylenes)

Igor Sokolik; Frank E. Karasz; Evgenii L. Frankevich; Andrey A. Lymarev

doi:10.1117/12.151143

27 August 1993 Intermediate polaron pairs formed in the process of charge carrier recombination in poly(p-phenylene vinylenes)

Igor Sokolik, Frank E. Karasz, Evgenii L. Frankevich, Andrey A. Lymarev

Author Affiliations +

Proceedings Volume 1910, Electroluminescent Materials, Devices, and Large-Screen Displays; (1993) https://doi.org/10.1117/12.151143
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1993, San Jose, CA, United States

Abstract

The effect of weak magnetic fields on the photoconductivity of poly(p-phenylene vinylene) (PPV) was observed within the temperature range 130 - 350 K. This effect is attributed to the formation of interchain pairs involving a negative polaron and a positive polaron. A polaron pair is formed as a result of interchain electron transfer from a molecular exciton. The lifetime of a pair is estimated to be within the range of 10^-8 - 10^-9 s. Thermal dissociation of a polaron pair produces free charge carriers, and recombination of the pair regenerates a singlet or triplet exciton on a single conjugated segment of a chain.

Citation Download Citation

Igor Sokolik, Frank E. Karasz, Evgenii L. Frankevich, and Andrey A. Lymarev "Intermediate polaron pairs formed in the process of charge carrier recombination in poly(p-phenylene vinylenes)", Proc. SPIE 1910, Electroluminescent Materials, Devices, and Large-Screen Displays, (27 August 1993); https://doi.org/10.1117/12.151143

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