Complex Analysis of Emission Properties of LEDs with 1D and 2D PhC Patterned by EBL
| Autor: | Lubos Suslik, Jaroslava Skriniarova, Jaroslav Kovac, Dusan Pudis, Anton Kuzma |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Diffraction
Materials science business.industry Physics::Optics Near and far field Surfaces and Interfaces Optical field Surfaces Coatings and Films law.invention light emitting diode electron beam lithography Optical microscope law lcsh:TA1-2040 Materials Chemistry Optoelectronics Goniophotometer business lcsh:Engineering (General). Civil engineering (General) Electron-beam lithography photonic crystal Photonic crystal Light-emitting diode |
| Zdroj: | Coatings, Vol 10, Iss 748, p 748 (2020) Coatings Volume 10 Issue 8 |
| ISSN: | 2079-6412 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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