Enhanced light extraction efficiency and viewing angle characteristics of microcavity OLEDs by using a diffusion layer
DC Field | Value | Language |
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dc.contributor.author | Park, Cheol Hwee | - |
dc.contributor.author | Kang, Shin Woo | - |
dc.contributor.author | Jung, Sun-Gyu | - |
dc.contributor.author | Lee, Dong Jun | - |
dc.contributor.author | Park, Young Wook | - |
dc.contributor.author | Ju, Byeong-Kwon | - |
dc.date.accessioned | 2022-03-04T20:40:22Z | - |
dc.date.available | 2022-03-04T20:40:22Z | - |
dc.date.created | 2022-01-20 | - |
dc.date.issued | 2021-02-09 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/137780 | - |
dc.description.abstract | The viewing angle characteristics and light extraction efficiency of organic light-emitting diodes (OLEDs) with a micro-cavity structure were enhanced. This was accomplished by inserting a diffusion layer composed of nano-sized structures of a transparent polymer poly(methyl methacrylate) (PMMA) combined with a zinc oxide (ZnO) semi-planarization layer with a high refractive index (n=2.1) into the devices. The PMMA nanostructures were fabricated by employing a reactive ion etching (RIE) process. The height and density of the PMMA nanostructures were controlled by varying the speed at which the PMMA was spin-coated onto the substrate. The insertion of the diffusion layer into the micro-cavity OLEDs (MC-OLEDs) improved the external quantum efficiency (EQE) by as much as 17% when compared to that of a MC-OLED without a diffusion layer. Furthermore, adjustment of the viewing angle from 0 degrees to 60 degrees halved the peak shift distance of the electroluminescence (EL) spectra from 42 to 20 nm. Additionally, changing the viewing angle from 0 degrees to 60 degrees changed the color coordinate movement distance of the MC-OLED with the diffusion layer to 0.078, less than half of the distance of the MC-OLED without the diffusion layer (0.165). | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.subject | EMITTING-DIODES | - |
dc.subject | VOLTAGE | - |
dc.subject | DEVICES | - |
dc.title | Enhanced light extraction efficiency and viewing angle characteristics of microcavity OLEDs by using a diffusion layer | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ju, Byeong-Kwon | - |
dc.identifier.doi | 10.1038/s41598-021-82753-9 | - |
dc.identifier.scopusid | 2-s2.0-85100796275 | - |
dc.identifier.wosid | 000684871900001 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.11, no.1 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 11 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | EMITTING-DIODES | - |
dc.subject.keywordPlus | VOLTAGE | - |
dc.subject.keywordPlus | DEVICES | - |
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