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Proceedings Paper

Identification and recovery of the trapped guided modes in LED structures using nanoscale texturing
Author(s): Peter Hobson; Jon Arthur Edward Wasey; Ian Sage; William L. Barnes
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Paper Abstract

We report results of emission measurements from aluminium tris-8-hydroxyquinoline (Alq3) based devices to demonstrate that introducing nanostructure into organic light emitting diodes allows previously trapped modes within the device to be scattered out as far-field radiation. This significantly alters the angular emission pattern and polarization characteristics of the device, and may result in improved device efficiency. The various radiative and non-radiative emission paths have been calculated and used to identify the different modes observed in the emission.

Paper Details

Date Published: 13 June 2002
PDF: 8 pages
Proc. SPIE 4642, Organic Photonic Materials and Devices IV, (13 June 2002); doi: 10.1117/12.470444
Show Author Affiliations
Peter Hobson, Univ. of Exeter (United Kingdom)
Jon Arthur Edward Wasey, Univ. of Exeter (United Kingdom)
Ian Sage, QinetiQ (United Kingdom)
William L. Barnes, Univ. of Exeter (United Kingdom)

Published in SPIE Proceedings Vol. 4642:
Organic Photonic Materials and Devices IV
Bernard Kippelen; Donal D. C. Bradley, Editor(s)

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