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Proceedings Paper

Infrared light-emitting diodes with lateral outcoupling taper for high extraction efficiency
Author(s): Wolfgang Schmid; Franz Eberhard; Markus Schauler; Martin Grabherr; Roger King; Michael Miller; Eckard Deichsel; G. Stareev; Ulrich Martin; Roland Jaeger; J. Joos; Rainer Michalzik; Karl Joachim Ebeling
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Paper Abstract

We present a non-resonant light emitting diode with a novel concept of light outcoupling. Light is generated in the center of a radially symmetric structure and propagates between two mirrors of a tapered region where outcoupling occurs. Principles of outcoupling are given using a simple ray tracing model. Different process routes are developed resulting in on-substrate as well as substratless devices. Not yet optimized devices show quantum efficiencies of 12% and 15%, respectively.

Paper Details

Date Published: 14 April 1999
PDF: 8 pages
Proc. SPIE 3621, Light-Emitting Diodes: Research, Manufacturing, and Applications III, (14 April 1999); doi: 10.1117/12.344478
Show Author Affiliations
Wolfgang Schmid, Univ. of Ulm (Germany)
Franz Eberhard, Univ. of Ulm (Germany)
Markus Schauler, Univ. of Ulm (Germany)
Martin Grabherr, Univ. of Ulm (Germany)
Roger King, Univ. of Ulm (Germany)
Michael Miller, Univ. of Ulm (Germany)
Eckard Deichsel, Univ. of Ulm (Germany)
G. Stareev, Univ. of Ulm (Germany)
Ulrich Martin, Univ. of Ulm (Germany)
Roland Jaeger, Univ. of Ulm (Germany)
J. Joos, Univ. of Ulm (Germany)
Rainer Michalzik, Univ. of Ulm (Germany)
Karl Joachim Ebeling, Univ. of Ulm (Germany)

Published in SPIE Proceedings Vol. 3621:
Light-Emitting Diodes: Research, Manufacturing, and Applications III
E. Fred Schubert; Ian T. Ferguson; H. Walter Yao, Editor(s)

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