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Proceedings Paper

Optical properties of LEDs with patterned 1D photonic crystal
Author(s): P. Hronec; A. Kuzma; J. Škriniarová; J. Kováč; A. Benčurová; Š. Haščík; P. Nemec
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Paper Abstract

In this paper we focus on the application of the one-dimensional photonic crystal (1D PhC) structures on the top of Al0.295Ga0.705As/GaAs multi-quantum well light emitting diode (MQW LED). 1D PhC structures with periods of 600 nm, 700 nm, 800 nm, and 900 nm were fabricated by the E-Beam Direct Write (EBDW) Lithography. Effect of 1D PhC period on the light extraction enhancement was studied. 1D PhC LED radiation profiles were obtained from Near Surface Light Emission Images (NSLEI). Measurements showed the strongest light extraction enhancement using 800 nm period of PhC. Investigation of PhC LED radiation profiles showed strong light decoupling when light reaches PhC structure. Achieved LEE was from 22.6% for 600 nm PhC LED to 47.0% for 800 nm PhC LED. LED with PhC structure at its surface was simulated by FDTD simulation method under excitation of appropriate launch field.

Paper Details

Date Published: 20 August 2015
PDF: 7 pages
Proc. SPIE 9556, Nanoengineering: Fabrication, Properties, Optics, and Devices XII, 95561A (20 August 2015); doi: 10.1117/12.2188127
Show Author Affiliations
P. Hronec, Slovenska Technicka Univ. (Slovakia)
A. Kuzma, Slovak Univ. of Technology in Bratislava (Slovakia)
International Laser Ctr. (Slovakia)
J. Škriniarová, Slovenska Technicka Univ. (Slovakia)
J. Kováč, Slovenska Technicka Univ. (Slovakia)
A. Benčurová, Slovak Academy of Sciences (Slovakia)
Š. Haščík, Slovak Academy of Sciences (Slovakia)
P. Nemec, Slovak Academy of Sciences (Slovakia)

Published in SPIE Proceedings Vol. 9556:
Nanoengineering: Fabrication, Properties, Optics, and Devices XII
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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