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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-88641-6 |
| _version_ | 1818433230083194880 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T16:17:47Z |
| format | Article |
| id | doaj.art-8bee237ffb1d4248ac081af98e505661 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T16:17:47Z |
| publishDate | 2021-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-8bee237ffb1d4248ac081af98e5056612022-12-21T22:54:52ZengNature PortfolioScientific Reports2045-23222021-04-0111111210.1038/s41598-021-88641-6Nanoslot metasurface design and characterization for enhanced organic light-emitting diodesKyungnam Kang0Seongmin Im1Changhun Lee2Jungho Kim3Donghyun Kim4School of Electrical and Electronic Engineering, Yonsei UniversitySchool of Electrical and Electronic Engineering, Yonsei UniversitySchool of Electrical and Electronic Engineering, Yonsei UniversityDepartment of Information Display, Kyung Hee UniversitySchool of Electrical and Electronic Engineering, Yonsei UniversityAbstract 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.https://doi.org/10.1038/s41598-021-88641-6 |
| spellingShingle | Kyungnam Kang Seongmin Im Changhun Lee Jungho Kim Donghyun Kim Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes Scientific Reports |
| title | 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_short | Nanoslot metasurface design and characterization for enhanced organic light-emitting diodes |
| title_sort | nanoslot metasurface design and characterization for enhanced organic light emitting diodes |
| url | https://doi.org/10.1038/s41598-021-88641-6 |
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