Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes

Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes

Abstract We developed a diffusion layer with a refractive index-matching layer added to a transparent nanoscale polymer-based structure to obtain its effective scattering effects. The diffusion layer had higher haze when the refractive index-matching layer to a higher refractive index was used. This...

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Autores principales: Cheol Hwee Park, Jae Geun Kim, Sun-Gyu Jung, Dong Jun Lee, Young Wook Park, Byeong-Kwon Ju
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2019
Materias:
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Science
Q
Acceso en línea:https://doaj.org/article/4aca435cecc64e25aa17ad0d1fd41887
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spelling oai:doaj.org-article:4aca435cecc64e25aa17ad0d1fd418872021-12-02T15:08:20ZOptical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes10.1038/s41598-019-45000-w2045-2322https://doaj.org/article/4aca435cecc64e25aa17ad0d1fd418872019-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-45000-whttps://doaj.org/toc/2045-2322Abstract We developed a diffusion layer with a refractive index-matching layer added to a transparent nanoscale polymer-based structure to obtain its effective scattering effects. The diffusion layer had higher haze when the refractive index-matching layer to a higher refractive index was used. This diffusion layer was applied to conventional organic light-emitting diodes (OLEDs) and micro-cavity OLEDs (MC-OLEDs) to evaluate the characteristics. When a diffusion layer was applied to conventional OLEDs, the external quantum efficiency (EQE) was 31.1% higher than that of the device without a diffusion layer due to the reduction of the substrate mode, and the viewing angle characteristic was also improved. Then, when the diffusion layer was applied to the MC-OLEDs, all devices showed similar EQE values regardless of the presence or absence of the diffusion layer, and the viewing-angle-dependent characteristics were greatly improved by the diffusion layer. Furthermore, when the diffusion layer was used with polarizer film, the black color implementation was not affected by the polarizer film, proving that it is applicable to actual OLED display products.Cheol Hwee ParkJae Geun KimSun-Gyu JungDong Jun LeeYoung Wook ParkByeong-Kwon JuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Cheol Hwee Park
Jae Geun Kim
Sun-Gyu Jung
Dong Jun Lee
Young Wook Park
Byeong-Kwon Ju
Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
description Abstract We developed a diffusion layer with a refractive index-matching layer added to a transparent nanoscale polymer-based structure to obtain its effective scattering effects. The diffusion layer had higher haze when the refractive index-matching layer to a higher refractive index was used. This diffusion layer was applied to conventional organic light-emitting diodes (OLEDs) and micro-cavity OLEDs (MC-OLEDs) to evaluate the characteristics. When a diffusion layer was applied to conventional OLEDs, the external quantum efficiency (EQE) was 31.1% higher than that of the device without a diffusion layer due to the reduction of the substrate mode, and the viewing angle characteristic was also improved. Then, when the diffusion layer was applied to the MC-OLEDs, all devices showed similar EQE values regardless of the presence or absence of the diffusion layer, and the viewing-angle-dependent characteristics were greatly improved by the diffusion layer. Furthermore, when the diffusion layer was used with polarizer film, the black color implementation was not affected by the polarizer film, proving that it is applicable to actual OLED display products.
format article
author Cheol Hwee Park
Jae Geun Kim
Sun-Gyu Jung
Dong Jun Lee
Young Wook Park
Byeong-Kwon Ju
author_facet Cheol Hwee Park
Jae Geun Kim
Sun-Gyu Jung
Dong Jun Lee
Young Wook Park
Byeong-Kwon Ju
author_sort Cheol Hwee Park
title Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
title_short Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
title_full Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
title_fullStr Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
title_full_unstemmed Optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
title_sort optical characteristics of refractive-index-matching diffusion layer in organic light-emitting diodes
publisher Nature Portfolio
publishDate 2019
url https://doaj.org/article/4aca435cecc64e25aa17ad0d1fd41887
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AT sungyujung opticalcharacteristicsofrefractiveindexmatchingdiffusionlayerinorganiclightemittingdiodes
AT dongjunlee opticalcharacteristicsofrefractiveindexmatchingdiffusionlayerinorganiclightemittingdiodes
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