Document Type

Article

Publication Date

10-2007

Journal or Book Title

Applied Physics Letters

Volume

91

First Page

143504-1

Last Page

143504-3

DOI

10.1063/1.2778358

Abstract

A dramatic spectrally narrowed edge emission (SNEE) from small molecular organic light-emitting diodes at room temperature, with a full width at half maximum of 5–10nm, is described. The results show that this emission is due to irregular waveguide modes that leak from the indium tin oxide anode to the glass substrate at a grazing angle. Measurements of variable stripe length devices exhibit an apparent weak optical gain, but there is no observable threshold bias associated with this SNEE. Hence this apparent “optical gain” is suspected to result from misalignment of the propagating leaky waveguide mode and the collecting optics.

Comments

The following article appeared in Applied Physics Letters 91 (2007): 143504 and may be found at doi:10.1063/1.2778358.

Rights

Copyright 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Language

en

File Format

application/pdf

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