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Highly Efficient Light-Emitting Diodes with Microcavities

One-dimensional microcavities are optical resonators with coplanar reflectors separated by a distance on the order of the optical wavelength. Such structures quantize the energy of photons propagating along the optical axis of the cavity and thereby strongly modify the spontaneous emission propertie...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1994-08, Vol.265 (5174), p.943-945
Main Authors: Schubert, E. F., Hunt, N. E. J., Micovic, M., Malik, R. J., Sivco, D. L., Cho, A. Y., Zydzik, G. J.
Format: Article
Language:English
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Summary:One-dimensional microcavities are optical resonators with coplanar reflectors separated by a distance on the order of the optical wavelength. Such structures quantize the energy of photons propagating along the optical axis of the cavity and thereby strongly modify the spontaneous emission properties of a photon-emitting medium inside a microcavity. This report concerns semiconductor light-emitting diodes with the photon-emitting active region of the light-emitting diodes placed inside a microcavity. These devices are shown to have strongly modified emission properties including experimental emission efficiencies that are higher by more than a factor of 5 and theoretical emission efficiencies that are higher by more than a factor of 10 than the emission efficiencies in conventional light-emitting diodes.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.265.5174.943