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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201900524
|2 doi
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|a pubmed24n0990.xml
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|a (DE-627)NLM297250094
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|a (NLM)31106503
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|a DE-627
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|e rakwb
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|a eng
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|a Wu, Zheng-Guang
|e verfasserin
|4 aut
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|a Chiral Octahydro-Binaphthol Compound-Based Thermally Activated Delayed Fluorescence Materials for Circularly Polarized Electroluminescence with Superior EQE of 32.6% and Extremely Low Efficiency Roll-Off
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Circularly polarized organic light-emitting diodes (CP-OLEDs) are particularly favorable for the direct generation of CP light, and they demonstrate a promising application in 3D display. However, up to now, such CP devices have suffered from low brightness, insufficient efficiency, and serious efficiency roll-off. In this study, a pair of octahydro-binaphthol (OBN)-based chiral emitting enantiomers, (R/S)-OBN-Cz, are developed by ingeniously merging a chiral source and a luminophore skeleton. These chirality-acceptor-donor (C-A-D)-type and rod-like compounds concurrently generate thermally activated delayed fluorescence with a small ΔEST of 0.037 eV, as well as a high photoluminescence quantum yield of 92% and intense circularly polarized photoluminescence with dissymmetry factors (|gPL |) of ≈2.0 × 10-3 in thin films. The CP-OLEDs based on (R/S)-OBN-Cz enantiomers not only display obvious circularly polarized electroluminescence signals with a |gEL | of ≈2.0 × 10-3 , but also exhibit superior efficiencies with maximum external quantum efficiency (EQEmax ) up to 32.6% and extremely low efficiency roll-off with an EQE of 30.6% at 5000 cd m-2 , which are the best performances among the reported CP devices to date
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|a Journal Article
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|a chiral octahydro-binaphthol compound
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|a circularly polarized organic light-emitting diodes
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|a high efficiency
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|a low efficiency roll-off
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|a thermally activated delayed fluorescence
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1 |
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|a Han, Hua-Bo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Zhi-Ping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Luo, Xu-Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Yi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, You-Xuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zuo, Jing-Lin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pan, Yi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 31(2019), 28 vom: 22. Juli, Seite e1900524
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:31
|g year:2019
|g number:28
|g day:22
|g month:07
|g pages:e1900524
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|u http://dx.doi.org/10.1002/adma.201900524
|3 Volltext
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