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240923s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202406706
|2 doi
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|a pubmed24n1546.xml
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|a (DE-627)NLM377952435
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|a (NLM)39308291
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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 Xing, Zhaohui
|e verfasserin
|4 aut
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|a Ions-induced Assembly of Perovskite Nanocomposites for Highly Efficient Light-Emitting Diodes with EQE Exceeding 30
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|c 2024
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|a Text
|b txt
|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 23.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 Wiley‐VCH GmbH.
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|a Metal halide perovskites, a cost-effective class of semiconductos, hold great promise for display technologies that demand high-efficiency, color-pure light-emitting diodes (LEDs). Early research on three-dimensional (3D) perovskites showed low radiative efficiencies due to modest exciton binding energies. To inprove luminescence, reducing dimensionality or grain size has been a common approach. However, dividing the perovskite lattice into smaller units may hinder carrier transport, compromising electrical performance. Moreover, the increased surface area introduce additional surface trap states, leading to greater non-radiative recombination. Here, an ions-induced growth method is employed to assembe lattice-anchored perovskite nanocomposites for efficient LEDs with high color purity. This approach enables the nanocomposite thin films, composed of 3D CsPbBr3 and its variant of zero-dimensional (0D) Cs4PbBr6, to feature significant low trap-assisted nonradiative recombination, enhanced light out-coupling with a corrugated surface, and well-balanced charge carrier transport. Based on the resultant 3D/0D perovskite nanocomposites, the perovskite LEDs (PeLEDs) achieving an remarkable external quantum efficiency of 31.0% at the emission peak of 521 nm with a narrow full width at half-maximum of only 18 nm. This sets a new benchmark for color purity in high performance PeLED research, highlighting the significant advantage of this approach
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|a Journal Article
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|a balance carrier transport
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|a defect passivation
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|a light extraction efficiency
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|a perovskite light‐emitting diodes
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|a regulation of crystallization
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|a Jin, Guangrong
|e verfasserin
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|a Du, Qing
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|a Pang, Peiyuan
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|a Liu, Tanghao
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|a Shen, Yang
|e verfasserin
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|a Zhang, Dengliang
|e verfasserin
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|a Yu, Bufan
|e verfasserin
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|a Liang, Yue
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|a Yang, Dezhi
|e verfasserin
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|a Tang, Jianxin
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|a Wang, Lei
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|a Xing, Guichuang
|e verfasserin
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|a Chen, Jiangshan
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|a Ma, Dongge
|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 (2024) vom: 23. Sept., Seite e2406706
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g year:2024
|g day:23
|g month:09
|g pages:e2406706
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|u http://dx.doi.org/10.1002/adma.202406706
|3 Volltext
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|a AR
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