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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202201442
|2 doi
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|a pubmed25n1136.xml
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|a DE-627
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|a eng
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|a Zou, Yang
|e verfasserin
|4 aut
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|a High-Performance Narrowband Pure-Red OLEDs with External Quantum Efficiencies up to 36.1% and Ultralow Efficiency Roll-Off
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|c 2022
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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 21.07.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a High-color-purity blue and green organic light-emitting diodes (OLEDs) have been resolved thanks to the development of B/N-based polycyclic multiple resonance (MR) emitters. However, due to the derivatization limit of B/N polycyclic structures, the design of red MR emitters remains challenging. Herein, a series of novel red MR emitters is reported by para-positioning N-π-N, O-π-O, B-π-B pairs onto a benzene ring to construct an MR central core. These emitters can be facilely and modularly synthesized, allowing for easy fine-tuning of emission spectra by peripheral groups. Moreover, these red MR emitters display excellent photophysical properties such as near-unity photoluminescence quantum yield (PLQY), fast radiative decay rate (kr ) up to 7.4 × 107 s-1 , and most importantly, narrowband emission with full-width at half-maximum (FWHM) of 32 nm. Incorporating these MR emitters, pure red OLEDs sensitized by phosphor realize state-of-the-art device performances with external quantum efficiency (EQE) exceeding 36%, ultralow efficiency roll-off (EQE remains as high as 25.1% at the brightness of 50 000 cd m-2 ), ultrahigh brightness over 130 000 cd m-2 , together with good device lifetime
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|a Journal Article
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|a color purity
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|a multiple resonance
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|a organic light-emitting diodes
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|a red emitters
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|a thermally activated delayed fluorescence
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| 700 |
1 |
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|a Hu, Jiahao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Mingxin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Miao, Jingsheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xie, Ziyang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qiu, Yuntao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Xiaosong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Chuluo
|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 34(2022), 29 vom: 03. Juli, Seite e2201442
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:34
|g year:2022
|g number:29
|g day:03
|g month:07
|g pages:e2201442
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|u http://dx.doi.org/10.1002/adma.202201442
|3 Volltext
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