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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202005570
|2 doi
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|a pubmed24n1059.xml
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|a (DE-627)NLM317828517
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|a (NLM)33215773
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ren, Zhenwei
|e verfasserin
|4 aut
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|a High-Performance Blue Perovskite Light-Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi-2D Perovskite Layers
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|c 2021
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 04.01.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 Wiley-VCH GmbH.
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|a While there has been extensive investigation into modulating quasi-2D perovskite compositions in light-emitting diodes (LEDs) for promoting their electroluminescence, very few reports have studied approaches involving enhancement of the energy transfer between quasi-2D perovskite layers of the film, which plays very important role for achieving high-performance perovskite LEDs (PeLEDs). In this work, a bifunctional ligand of 4-(2-aminoethyl)benzoic acid (ABA) cation is strategically introduced into the perovskite to diminish the weak van der Waals gap between individual perovskite layers for promoting coupled quasi-2D perovskite layers. In particular, the strengthened interaction between coupled quasi-2D perovskite layers favors an efficient energy transfer in the perovskite films. The introduced ABA can also simultaneously passivate the perovskite defects by reducing metallic Pb for less nonradiative recombination loss. Benefiting from the advanced properties of ABA incorporated perovskites, highly efficient blue PeLEDs with external quantum efficiency of 10.11% and a very long operational stability of 81.3 min, among the best performing blue quasi-2D PeLEDs, are achieved. Consequently, this work contributes an effective approach for high-performance and stable blue PeLEDs toward practical applications
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|a Journal Article
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|a blue perovskite LEDs
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|a defect passivation
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|a energy transfer
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|a Yu, Jiahao
|e verfasserin
|4 aut
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|a Qin, Zhaotong
|e verfasserin
|4 aut
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|a Wang, Jing
|e verfasserin
|4 aut
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|a Sun, Jiayun
|e verfasserin
|4 aut
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1 |
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|a Chan, Christopher C S
|e verfasserin
|4 aut
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|a Ding, Shihao
|e verfasserin
|4 aut
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|a Wang, Kai
|e verfasserin
|4 aut
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|a Chen, Rui
|e verfasserin
|4 aut
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|a Wong, Kam Sing
|e verfasserin
|4 aut
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|a Lu, Xinhui
|e verfasserin
|4 aut
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|a Yin, Wan-Jian
|e verfasserin
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|a Choy, Wallace C H
|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 33(2021), 1 vom: 15. Jan., Seite e2005570
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:1
|g day:15
|g month:01
|g pages:e2005570
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|u http://dx.doi.org/10.1002/adma.202005570
|3 Volltext
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