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241018s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202408775
|2 doi
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|a pubmed24n1623.xml
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|a (DE-627)NLM379075490
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|a (NLM)39420688
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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 Matsushima, Toshinori
|e verfasserin
|4 aut
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|a Efficient Electroluminescence from Organic Fluorophore-Containing Perovskite Films
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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 05.12.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Two-dimensional perovskites containing an organic fluorophore can be a unique emitter for light-emitting diodes (LEDs). However, external quantum efficiencies (EQEs) of fluorophore-containing perovskite LEDs reported thus far are still very low. In this study, these are able to boost the EQE to ≈10% by choosing an organic fluorophore with appropriate energy levels for the perovskite structure organization. In the fluorophore-containing perovskite LEDs, carrier transport and exciton formation take place in the perovskite's metal halide framework, thereby avoiding the direct formation of nonradiative triplet excitons on the organic fluorophores. Subsequently, the bright triplet excitons formed in the metal halide framework are transferred to form the radiative singlet states of the organic fluorophores, leading to efficient electroluminescence (EL) from the organic fluorophores regularly dispersed inside the perovskite structure. Unexpectedly higher light-outcoupling efficiency, which is caused by the light scattering in the polycrystalline perovskite layer, will be another reason for efficient EL. These findings will contribute toward the fabrication of LED-based products with high performance at a low cost
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|a Journal Article
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|a 2D perovskites
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|a electroluminescence
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|a energy transfer
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|a light‐emitting diodes
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|a organic fluorophores
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|a Qin, Chuanjiang
|e verfasserin
|4 aut
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|a Teng, Teng
|e verfasserin
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|a Kamatham, Narayanaswamy
|e verfasserin
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|a Sosa Vargas, Lydia
|e verfasserin
|4 aut
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|a Kreher, David
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|a Heinrich, Benoit
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|4 aut
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|a Ishii, Tomohiro
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|4 aut
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|a Terakawa, Shinobu
|e verfasserin
|4 aut
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|a Leyden, Matthew R
|e verfasserin
|4 aut
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|a Sandanayaka, Atula S D
|e verfasserin
|4 aut
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|a Bencheikh, Fatima
|e verfasserin
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|a Miyata, Kiyoshi
|e verfasserin
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|a Onda, Ken
|e verfasserin
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|a Kanemitsu, Yoshihiko
|e verfasserin
|4 aut
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|a Mathevet, Fabrice
|e verfasserin
|4 aut
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|a Adachi, Chihaya
|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 36(2024), 49 vom: 04. Dez., Seite e2408775
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:49
|g day:04
|g month:12
|g pages:e2408775
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|u http://dx.doi.org/10.1002/adma.202408775
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