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Proceedings Paper

Intermediate polaron pairs formed in the process of charge carrier recombination in poly(p-phenylene vinylenes)
Author(s): Igor Sokolik; Frank E. Karasz; Evgenii L. Frankevich; Andrey A. Lymarev
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Paper 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.

Paper Details

Date Published: 27 August 1993
PDF: 8 pages
Proc. SPIE 1910, Electroluminescent Materials, Devices, and Large-Screen Displays, (27 August 1993); doi: 10.1117/12.151143
Show Author Affiliations
Igor Sokolik, Univ. of Massachusetts/Amherst (United States)
Frank E. Karasz, Univ. of Massachusetts/Amherst (United States)
Evgenii L. Frankevich, Institute of Energy Problems of Chemical Physics (Russia)
Andrey A. Lymarev, Institute of Energy Problems of Chemical Physics (Russia)

Published in SPIE Proceedings Vol. 1910:
Electroluminescent Materials, Devices, and Large-Screen Displays
Esther M. Conwell; Milan Stolka; M. Robert Miller, Editor(s)

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