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Proceedings Paper

Photonic crystal light-emitting diodes
Author(s): Shanhui Fan; Pierre R. Villeneuve; John D. Joannopoulos; E. Fred Schubert
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Paper Abstract

A novel LED design employing a 2D periodic photonic crystal host is demonstrated theoretically to yield extraction efficiencies approaching 100 percent. Specifically, a thin slab of 2D photonic crystal is shown to alter drastically the radiation pattern of spontaneous emission. By eliminating all guided modes at the transition frequencies, spontaneous emission can be coupled entirely to free space modes, resulting in a greatly enhanced extraction efficiency. Such structures might provide a solution to the long-standing problem of poor light extraction form high refractive-index semiconductors in light-emitting diodes.

Paper Details

Date Published: 4 April 1997
PDF: 7 pages
Proc. SPIE 3002, Light-Emitting Diodes: Research, Manufacturing, and Applications, (4 April 1997); doi: 10.1117/12.271043
Show Author Affiliations
Shanhui Fan, Massachusetts Institute of Technology (United States)
Pierre R. Villeneuve, Massachusetts Institute of Technology (United States)
John D. Joannopoulos, Massachusetts Institute of Technology (United States)
E. Fred Schubert, Boston Univ. (United States)


Published in SPIE Proceedings Vol. 3002:
Light-Emitting Diodes: Research, Manufacturing, and Applications
E. Fred Schubert, Editor(s)

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