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Surface plasmon enhanced light-emitting diode

Vučković, Jelena and Lončar, Marko and Scherer, Axel (2000) Surface plasmon enhanced light-emitting diode. IEEE Journal of Quantum Electronics, 36 (10). pp. 1131-1144. ISSN 0018-9197. doi:10.1109/3.880653.

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A method for enhancing the emission properties of light-emitting diodes, by coupling to surface plasmons, is analyzed both theoretically and experimentally. The analyzed structure consists of a semiconductor emitter layer thinner than λ/2 sandwiched between two metal films. If a periodic pattern is defined in the top semitransparent metal layer by lithography, it is possible to efficiently couple out the light emitted from the semiconductor and to simultaneously enhance the spontaneous emission rate. For the analyzed designs, we theoretically estimate extraction efficiencies as high as 37% and Purcell factors of up to 4.5. We have experimentally measured photoluminescence intensities of up to 46 times higher in fabricated structures compared to unprocessed wafers. The increased light emission is due to an increase in the efficiency and an increase in the pumping intensity resulting from trapping of pump photons within the microcavity.

Item Type:Article
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Lončar, Marko0000-0002-5029-5017
Additional Information:© 2000 IEEE. Reprinted with permission. Manuscript received December 27, 1999; revised July 10, 2000. This work was supported by the Air Force Office of Scientific Research (FOSR) under Contract AFS-5XF49620-1-044-SC. The authors would like to thank O. Painter for the help with measurements and T. Yoshie for many useful suggestions.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)AFS-5XF49620-1-044-SC
Subject Keywords:Finite-difference time-domain methods, light-emitting diodes, optics at surfaces, spontaneous emission, surface plasmons
Issue or Number:10
Record Number:CaltechAUTHORS:VUCieeejqe00
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Official Citation:J. Vuckovic, M. Loncar and A. Scherer, "Surface plasmon enhanced light-emitting diode," in IEEE Journal of Quantum Electronics, vol. 36, no. 10, pp. 1131-1144, Oct. 2000. doi: 10.1109/3.880653
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2793
Deposited By: Archive Administrator
Deposited On:27 Apr 2006
Last Modified:08 Nov 2021 19:50

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