Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers

White organic light-emitting diodes (WOLEDs) incorporating a blend of blue, green and red phosphorescent small molecular materials are presented in this article. 4,4′,4″-Tris(carbazol-9-yl)triphenylamine (TcTa) and 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi) with different tra...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Ruixia Wu [verfasserIn] Xiaokang Li [verfasserIn] Weiqiang Liu [verfasserIn] Liang Zhou [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	white organic light-emitting diodes efficiency efficient energy transfer phosphorescent luminescence

Übergeordnetes Werk:	In: Photonics - MDPI AG, 2014, 9(2022), 10, p 767
Übergeordnetes Werk:	volume:9 ; year:2022 ; number:10, p 767

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/photonics9100767

Katalog-ID:	DOAJ027387720

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source	In Photonics 9(2022), 10, p 767 volume:9 year:2022 number:10, p 767
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callnumber-first	T - Technology
author	Ruixia Wu
spellingShingle	Ruixia Wu misc TA1501-1820 misc white organic light-emitting diodes misc efficiency misc efficient energy transfer misc phosphorescent luminescence misc Applied optics. Photonics Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers
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topic_title	TA1501-1820 Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers white organic light-emitting diodes efficiency efficient energy transfer phosphorescent luminescence
topic	misc TA1501-1820 misc white organic light-emitting diodes misc efficiency misc efficient energy transfer misc phosphorescent luminescence misc Applied optics. Photonics
topic_unstemmed	misc TA1501-1820 misc white organic light-emitting diodes misc efficiency misc efficient energy transfer misc phosphorescent luminescence misc Applied optics. Photonics
topic_browse	misc TA1501-1820 misc white organic light-emitting diodes misc efficiency misc efficient energy transfer misc phosphorescent luminescence misc Applied optics. Photonics
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title	Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers
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title_full	Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers
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title_sort	highly efficient white organic light-emitting diodes based on phosphorescent iridium complexes with multi-light-emitting layers
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title_auth	Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers
abstract	White organic light-emitting diodes (WOLEDs) incorporating a blend of blue, green and red phosphorescent small molecular materials are presented in this article. 4,4′,4″-Tris(carbazol-9-yl)triphenylamine (TcTa) and 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi) with different transmission characteristics were selected as hosts for different emitting layers aim to promote holes transport, which will reinforce carriers’ balance and broaden carrier composite. On account of adaptive energy levels of the utilized dopants and hosts, secured phosphorescent WOLED displayed high efficiencies, low operating voltage and slow efficiency roll-off. In addition, distribution of carriers’ recombination zone and spectral of change were studied in detail to further understand the light-emitting mechanisms of obtained WOLEDs. Finally, by majorizing the dosage concentration of (fbi)<sub<2</sub<Ir(acac) (bis(2-(9,9-diethyl-9H-fluoren-2-yl)-1-phenyl-1H-benzoimidazol-N,C3)iridium(acetylacetonate)) and the architectures of WOLEDs, the optimal device exhibited the maximum efficiencies of 44.92 cd A<sup<−1</sup<, 42.85 lm W<sup<−1</sup<, 16.8%, respectively, turn on voltage of 2.6 V and Commission International de l’Eclairage coordinates of (0.337, 0.458) at the brightness level of 3000 cd m<sup<−2</sup<.
abstractGer	White organic light-emitting diodes (WOLEDs) incorporating a blend of blue, green and red phosphorescent small molecular materials are presented in this article. 4,4′,4″-Tris(carbazol-9-yl)triphenylamine (TcTa) and 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi) with different transmission characteristics were selected as hosts for different emitting layers aim to promote holes transport, which will reinforce carriers’ balance and broaden carrier composite. On account of adaptive energy levels of the utilized dopants and hosts, secured phosphorescent WOLED displayed high efficiencies, low operating voltage and slow efficiency roll-off. In addition, distribution of carriers’ recombination zone and spectral of change were studied in detail to further understand the light-emitting mechanisms of obtained WOLEDs. Finally, by majorizing the dosage concentration of (fbi)<sub<2</sub<Ir(acac) (bis(2-(9,9-diethyl-9H-fluoren-2-yl)-1-phenyl-1H-benzoimidazol-N,C3)iridium(acetylacetonate)) and the architectures of WOLEDs, the optimal device exhibited the maximum efficiencies of 44.92 cd A<sup<−1</sup<, 42.85 lm W<sup<−1</sup<, 16.8%, respectively, turn on voltage of 2.6 V and Commission International de l’Eclairage coordinates of (0.337, 0.458) at the brightness level of 3000 cd m<sup<−2</sup<.
abstract_unstemmed	White organic light-emitting diodes (WOLEDs) incorporating a blend of blue, green and red phosphorescent small molecular materials are presented in this article. 4,4′,4″-Tris(carbazol-9-yl)triphenylamine (TcTa) and 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi) with different transmission characteristics were selected as hosts for different emitting layers aim to promote holes transport, which will reinforce carriers’ balance and broaden carrier composite. On account of adaptive energy levels of the utilized dopants and hosts, secured phosphorescent WOLED displayed high efficiencies, low operating voltage and slow efficiency roll-off. In addition, distribution of carriers’ recombination zone and spectral of change were studied in detail to further understand the light-emitting mechanisms of obtained WOLEDs. Finally, by majorizing the dosage concentration of (fbi)<sub<2</sub<Ir(acac) (bis(2-(9,9-diethyl-9H-fluoren-2-yl)-1-phenyl-1H-benzoimidazol-N,C3)iridium(acetylacetonate)) and the architectures of WOLEDs, the optimal device exhibited the maximum efficiencies of 44.92 cd A<sup<−1</sup<, 42.85 lm W<sup<−1</sup<, 16.8%, respectively, turn on voltage of 2.6 V and Commission International de l’Eclairage coordinates of (0.337, 0.458) at the brightness level of 3000 cd m<sup<−2</sup<.
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title_short	Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers
url	https://doi.org/10.3390/photonics9100767 https://doaj.org/article/659f979016d5485a9bec0974a89c179d https://www.mdpi.com/2304-6732/9/10/767 https://doaj.org/toc/2304-6732
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Highly Efficient White Organic Light-Emitting Diodes Based on Phosphorescent Iridium Complexes with Multi-Light-Emitting Layers

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