A model for the current-voltage characteristics and the quantum efficiency of single-layer organic light emitting diodes

Y. Kawabe, G. E. Jabbour, S. E. Shaheen, B. Kippelen, N. Peyghambarian

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

A model for the current-voltage characteristics and the quantum efficiency of single-layer organic light emitting diodes is presented. With variables such as the electric field, the hole, and electron carrier densities, a set of coupled nonlinear differential equations is derived by using classical electrostatics and by assuming Fowler-Nordheim injection. Numerical calculations for different carrier mobility and barrier height conditions show that low barrier height at both electrodes leads to higher efficiency and higher carrier mobility leads to higher brightness. We find that for applications that require high current injection such as lasers, materials with high mobility are desired to reduce space charge effects.

Original languageEnglish (US)
Pages (from-to)1290-1292
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number10
DOIs
StatePublished - Sep 8 1997

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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