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Enhanced Emission from a Light-Emitting Diode Modified by a Photonic Crystal

Published online by Cambridge University Press:  15 March 2011

Alexei A. Erchak ,
Daniel J. Ripin ,
Shanhui Fan ,
John D. Joannopoulos ,
Erich P. Ippen ,
Gale S. Petrich  and
Leslie A. Kolodziejski
Alexei A. Erchak
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Daniel J. Ripin
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Shanhui Fan
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
John D. Joannopoulos
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Erich P. Ippen
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Gale S. Petrich
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Leslie A. Kolodziejski
Affiliation:
Center for Materials Science and Engineering and Research Laboratory of Electronics Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
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Abstract

Enhanced light output is observed from a light-emitting diode (LED) structure containing a two-dimensional (2D) photonic crystal. The capture of emitted light into planar waveguide modes reduces the extraction efficiency of LEDs. Here, 2D photonic crystals are utilized to: 1) enhance the extraction of light in the vertical direction from an LED and 2) enhance optical pumping by directly coupling light from a pump laser into the LED structure. Spatially and spectrally-resolved photoluminescence (PL) is used to characterize the enhancements. A 100-fold enhancement in extraction for a single wavelength into the vertical direction is obtained without the photonic crystal penetrating the active material.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 637: Symposium E – Microphotonics-Materials, Physics, and Applications , 2000 , E2.8
Copyright
Copyright © Materials Research Society 2001

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