Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes

Abstract We investigate bottom-emitting organic light-emitting diodes (B-OLEDs) integrated with metasurface (MS) to analyze the effect of the structural parameters on the output performance. The performance of the MS-integrated B-OLED (MIB-OLED) is evaluated by out-coupling efficiency (OCE) and refl...

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Autores principales:	Kyungnam Kang, Seongmin Im, Changhun Lee, Jungho Kim, Donghyun Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8bee237ffb1d4248ac081af98e505661
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spelling	oai:doaj.org-article:8bee237ffb1d4248ac081af98e5056612021-12-02T16:56:02ZNanoslot metasurface design and characterization for enhanced organic light-emitting diodes10.1038/s41598-021-88641-62045-2322https://doaj.org/article/8bee237ffb1d4248ac081af98e5056612021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88641-6https://doaj.org/toc/2045-2322Abstract We investigate bottom-emitting organic light-emitting diodes (B-OLEDs) integrated with metasurface (MS) to analyze the effect of the structural parameters on the output performance. The performance of the MS-integrated B-OLED (MIB-OLED) is evaluated by out-coupling efficiency (OCE) and reflection of the ambient light, while attention is paid mainly to dielectric capping and metal structure of MS that may influence excitation of surface plasmon (SP). The results suggest that layer thicknesses affect the performance by as much as 10% for the OCE and up to 32% for reflectance. The OCE is in general weakly affected by the structural parameters of MS. In contrast, the reflectance characteristics are found to be dominated by localized SP that is largely determined by the length and the width of a unit slot of MS. An optimization factor introduced to evaluate the performance based on out-coupling power to the radiation mode and reflectance of MIB-OLEDs confirms that integration with MS improves performance by 16% over conventional planar structure. In particular, MIB-OLED is found to enhance OCE by 51% with Lambertian-like pattern. Enhanced performance is experimentally confirmed. The findings provide insights on how to optimize the MS structure to produce MIB-OLEDs with enhanced out-coupled power and contrast ratio.Kyungnam KangSeongmin ImChanghun LeeJungho KimDonghyun KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kyungnam Kang Seongmin Im Changhun Lee Jungho Kim Donghyun Kim Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
description	Abstract We investigate bottom-emitting organic light-emitting diodes (B-OLEDs) integrated with metasurface (MS) to analyze the effect of the structural parameters on the output performance. The performance of the MS-integrated B-OLED (MIB-OLED) is evaluated by out-coupling efficiency (OCE) and reflection of the ambient light, while attention is paid mainly to dielectric capping and metal structure of MS that may influence excitation of surface plasmon (SP). The results suggest that layer thicknesses affect the performance by as much as 10% for the OCE and up to 32% for reflectance. The OCE is in general weakly affected by the structural parameters of MS. In contrast, the reflectance characteristics are found to be dominated by localized SP that is largely determined by the length and the width of a unit slot of MS. An optimization factor introduced to evaluate the performance based on out-coupling power to the radiation mode and reflectance of MIB-OLEDs confirms that integration with MS improves performance by 16% over conventional planar structure. In particular, MIB-OLED is found to enhance OCE by 51% with Lambertian-like pattern. Enhanced performance is experimentally confirmed. The findings provide insights on how to optimize the MS structure to produce MIB-OLEDs with enhanced out-coupled power and contrast ratio.
format	article
author	Kyungnam Kang Seongmin Im Changhun Lee Jungho Kim Donghyun Kim
author_facet	Kyungnam Kang Seongmin Im Changhun Lee Jungho Kim Donghyun Kim
author_sort	Kyungnam Kang
title	Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
title_short	Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
title_full	Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
title_fullStr	Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
title_full_unstemmed	Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
title_sort	nanoslot metasurface design and characterization for enhanced organic light-emitting diodes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8bee237ffb1d4248ac081af98e505661
work_keys_str_mv	AT kyungnamkang nanoslotmetasurfacedesignandcharacterizationforenhancedorganiclightemittingdiodes AT seongminim nanoslotmetasurfacedesignandcharacterizationforenhancedorganiclightemittingdiodes AT changhunlee nanoslotmetasurfacedesignandcharacterizationforenhancedorganiclightemittingdiodes AT junghokim nanoslotmetasurfacedesignandcharacterizationforenhancedorganiclightemittingdiodes AT donghyunkim nanoslotmetasurfacedesignandcharacterizationforenhancedorganiclightemittingdiodes
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Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes

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