Exciplex current mechanism for ambipolar bilayer organic light emitting diodes

descriptionPublicationkeyboard_double_arrow_right Article 19 Sep 2011 English Publisher:AIP PublishingJournal:Applied Physics Letters, volume 99 (issn: 0003-6951, eissn: 1077-3118,

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Authors: Feilong Liu; P. Paul Ruden; Ian H. Campbell; Darryl L. Smith;

doi: 10.1063/1.3640232

Exciplex current mechanism for ambipolar bilayer organic light emitting diodes

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Abstract

The effect of exciplex dynamics on the current in a bilayer organic light emitting diode with ambipolar injection is explored. Exciplex formation facilitates intermolecular electron-hole recombination across the interface. We discuss the characteristics of the exciplex recombination current with respect to different energy level alignments, interface recombination rates, and exciplex relaxation lifetimes, using a model device consisting of a C60/tetracene bilayer.

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