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Open AccessArticle

Complex Analysis of Emission Properties of LEDs with 1D and 2D PhC Patterned by EBL

1
Department of Physics, Faculty of Electrical Engineering, University of Zilina, Univerzitna 1, 01026 Zilina, Slovakia
2
Institute of Electronics and Photonics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovicova 3, 81219 Bratislava, Slovakia
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(8), 748; https://doi.org/10.3390/coatings10080748
Received: 16 July 2020 / Revised: 24 July 2020 / Accepted: 27 July 2020 / Published: 30 July 2020
In this paper, we present the optical and electrical properties of surface-patterned GaAs-based Multiquantum Well (MQW) light emitting diodes (LEDs) with one- and two-dimensional photonic crystal (PhC) structures. Optical properties were analyzed in the near and far field, measured by a near-field scanning optical microscope and with a goniophotometer. We demonstrated a strong effect of patterned PhC on the radiation properties and the light extraction efficiency. Enormous surface emission enhancement reaching 110% confirmed the strong effect of the patterned structure on the coupling of the guided modes into the surface emission. Additionally, the considerable effect of the PhC structure diffraction on radiation pattern was confirmed in the near and far field and is in good agreement with the simulated shape of the optical field. View Full-Text
Keywords: photonic crystal; light emitting diode; electron beam lithography photonic crystal; light emitting diode; electron beam lithography
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MDPI and ACS Style

Suslik, L.; Skriniarova, J.; Kovac, J.; Pudis, D.; Kuzma, A.; Kovac, J., Jr. Complex Analysis of Emission Properties of LEDs with 1D and 2D PhC Patterned by EBL. Coatings 2020, 10, 748.

AMA Style

Suslik L, Skriniarova J, Kovac J, Pudis D, Kuzma A, Kovac J Jr.. Complex Analysis of Emission Properties of LEDs with 1D and 2D PhC Patterned by EBL. Coatings. 2020; 10(8):748.

Chicago/Turabian Style

Suslik, Lubos; Skriniarova, Jaroslava; Kovac, Jaroslav; Pudis, Dusan; Kuzma, Anton; Kovac, Jaroslav, Jr. 2020. "Complex Analysis of Emission Properties of LEDs with 1D and 2D PhC Patterned by EBL" Coatings 10, no. 8: 748.

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