Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer

Abstract In this study, we report highly efficient green phosphorescent organic light-emitting diodes (OLEDs) with ultra-thin emission layers (EMLs). We use tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3), a green phosphorescent dopant, for creating the OLEDs. Under systematic analysis, the pea...

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Autores principales:	Shin Woo Kang, Dong-Hyun Baek, Byeong-Kwon Ju, Young Wook Park
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/050d84fb1ceb4394a9a07be3c46dea9c
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spelling	oai:doaj.org-article:050d84fb1ceb4394a9a07be3c46dea9c2021-12-02T18:27:48ZGreen phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer10.1038/s41598-021-86333-92045-2322https://doaj.org/article/050d84fb1ceb4394a9a07be3c46dea9c2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86333-9https://doaj.org/toc/2045-2322Abstract In this study, we report highly efficient green phosphorescent organic light-emitting diodes (OLEDs) with ultra-thin emission layers (EMLs). We use tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3), a green phosphorescent dopant, for creating the OLEDs. Under systematic analysis, the peak external quantum efficiency (EQE) of an optimized device based on the ultra-thin EML structure is found to be approximately 24%. This result is highest EQE among ultra-thin EML OLEDs and comparable to the highest efficiency achieved by OLEDs using Ir(ppy)3 that are fabricated via conventional doping methods. Moreover, this result shows that OLEDs with ultra-thin EML structures can achieve ultra-high efficiency.Shin Woo KangDong-Hyun BaekByeong-Kwon JuYoung Wook ParkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shin Woo Kang Dong-Hyun Baek Byeong-Kwon Ju Young Wook Park Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
description	Abstract In this study, we report highly efficient green phosphorescent organic light-emitting diodes (OLEDs) with ultra-thin emission layers (EMLs). We use tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3), a green phosphorescent dopant, for creating the OLEDs. Under systematic analysis, the peak external quantum efficiency (EQE) of an optimized device based on the ultra-thin EML structure is found to be approximately 24%. This result is highest EQE among ultra-thin EML OLEDs and comparable to the highest efficiency achieved by OLEDs using Ir(ppy)3 that are fabricated via conventional doping methods. Moreover, this result shows that OLEDs with ultra-thin EML structures can achieve ultra-high efficiency.
format	article
author	Shin Woo Kang Dong-Hyun Baek Byeong-Kwon Ju Young Wook Park
author_facet	Shin Woo Kang Dong-Hyun Baek Byeong-Kwon Ju Young Wook Park
author_sort	Shin Woo Kang
title	Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
title_short	Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
title_full	Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
title_fullStr	Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
title_full_unstemmed	Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
title_sort	green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/050d84fb1ceb4394a9a07be3c46dea9c
work_keys_str_mv	AT shinwookang greenphosphorescentorganiclightemittingdiodeexhibitinghighestexternalquantumefficiencywithultrathinundopedemissionlayer AT donghyunbaek greenphosphorescentorganiclightemittingdiodeexhibitinghighestexternalquantumefficiencywithultrathinundopedemissionlayer AT byeongkwonju greenphosphorescentorganiclightemittingdiodeexhibitinghighestexternalquantumefficiencywithultrathinundopedemissionlayer AT youngwookpark greenphosphorescentorganiclightemittingdiodeexhibitinghighestexternalquantumefficiencywithultrathinundopedemissionlayer
_version_	1718378019451568128

Green phosphorescent organic light-emitting diode exhibiting highest external quantum efficiency with ultra-thin undoped emission layer

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