Journal
SYNTHETIC METALS
Volume 111, Issue -, Pages 327-330Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0379-6779(99)00357-4
Keywords
electron injection; Alq(3); light-emitting diode
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Electric field and temperature-dependent electron injection studies have been performed in an aluminum (Al)/tris(8-hydroxyquinolinolato)aluminum (Alq(3))/magnesium (Mg):silver (Ag) single-layer organic light-emitting diode (OLED). Semiconductor textbook theories, such as Fowler-Nordheim (FN) model for tunneling injection or Richardson-Schottky (RS) model, for thermionic emission cannot account for the experimentally observed dependence of the injection current on electric field and temperature. Excellent agreement with experiment is provided by a Monte Carlo simulation of carrier injection from a metal into an organic dielectric with random hopping sites. (C) 2000 Elsevier Science S.A. All rights reserved.
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