Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host

Abstract Light-emitting electrochemical cells (LECs) with the thermally activated delayed fluorescence(TADF) host and phosphorescent guests were fabricated using solution process. It is demonstrated for the first time that TADF, a well-known phenomenon that helps to increase electroluminescence effi...

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Autores principales:	Jiang Liu, Jorge Oliva, Kwing Tong, Fangchao Zhao, Dustin Chen, Qibing Pei
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dd89a933c690460ea5545bd79d5de2ef
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spelling	oai:doaj.org-article:dd89a933c690460ea5545bd79d5de2ef2021-12-02T15:05:41ZMulti-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host10.1038/s41598-017-01812-22045-2322https://doaj.org/article/dd89a933c690460ea5545bd79d5de2ef2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01812-2https://doaj.org/toc/2045-2322Abstract Light-emitting electrochemical cells (LECs) with the thermally activated delayed fluorescence(TADF) host and phosphorescent guests were fabricated using solution process. It is demonstrated for the first time that TADF, a well-known phenomenon that helps to increase electroluminescence efficiency by harvesting excitons from triplet states, is used as a host in LECs. Devices with green, yellow, red and warm white emissions were fabricated, with the best devices showing more than 7000 cd/m2 stable emission and a peak efficiency over 7 cd/A. Under high voltage stress, a burst of extremely high luminance of over 30,000 cd/m2 was observed. All these LEC devices are extremely simple with only one active layer. Thus, our results could pave way to produce low- cost light source with high luminance, using TADF molecules.Jiang LiuJorge OlivaKwing TongFangchao ZhaoDustin ChenQibing PeiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiang Liu Jorge Oliva Kwing Tong Fangchao Zhao Dustin Chen Qibing Pei Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
description	Abstract Light-emitting electrochemical cells (LECs) with the thermally activated delayed fluorescence(TADF) host and phosphorescent guests were fabricated using solution process. It is demonstrated for the first time that TADF, a well-known phenomenon that helps to increase electroluminescence efficiency by harvesting excitons from triplet states, is used as a host in LECs. Devices with green, yellow, red and warm white emissions were fabricated, with the best devices showing more than 7000 cd/m2 stable emission and a peak efficiency over 7 cd/A. Under high voltage stress, a burst of extremely high luminance of over 30,000 cd/m2 was observed. All these LEC devices are extremely simple with only one active layer. Thus, our results could pave way to produce low- cost light source with high luminance, using TADF molecules.
format	article
author	Jiang Liu Jorge Oliva Kwing Tong Fangchao Zhao Dustin Chen Qibing Pei
author_facet	Jiang Liu Jorge Oliva Kwing Tong Fangchao Zhao Dustin Chen Qibing Pei
author_sort	Jiang Liu
title	Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
title_short	Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
title_full	Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
title_fullStr	Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
title_full_unstemmed	Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host
title_sort	multi-colored light-emitting electrochemical cells based on thermal activated delayed fluorescence host
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/dd89a933c690460ea5545bd79d5de2ef
work_keys_str_mv	AT jiangliu multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost AT jorgeoliva multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost AT kwingtong multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost AT fangchaozhao multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost AT dustinchen multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost AT qibingpei multicoloredlightemittingelectrochemicalcellsbasedonthermalactivateddelayedfluorescencehost
_version_	1718388738023751680

Multi-Colored Light-Emitting Electrochemical Cells Based on Thermal Activated Delayed Fluorescence Host

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