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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202002945
|2 doi
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|a pubmed24n1044.xml
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|a (DE-627)NLM313367639
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|a (NLM)32761681
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|a DE-627
|b ger
|c DE-627
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|a eng
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| 100 |
1 |
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|a Li, Jiangwei
|e verfasserin
|4 aut
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| 245 |
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|a A Highly Efficient and Stable Blue-Emitting Cs5 Cu3 Cl6 I2 with a 1D Chain Structure
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|c 2020
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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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|a Date Revised 30.09.2020
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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 In the field of photonics, alkali copper(I) halides attract considerable attention as lead-free emitters. The intrinsic quantum confinement effects originating from low-dimensional electronic structure lead to high photoluminescence quantum yields (PLQYs). Among them, Cs3 Cu2 I5 is the most promising candidate, satisfying both high PLQY and air stability. In this study, a strategy to explore a new material meeting these requirements through the use of the mixed-anions of I- and Cl- is proposed. The expectation is maintained that the large difference in ionic radii between them likely results in the formation of a novel compound. Consequently, Cs5 Cu3 Cl6 I2 with a 1D zigzag chain structure is discovered. This material exhibits blue emission (≈462 nm) with a near-unity quantum yield of 95%. An electronic structure calculation reveals that the localized nature of the valence band maximum is crucial in obtaining efficient self-trapped exciton emission. Moreover, the iodine-bridged 1D connectivity significantly enhances the chemical stability of Cs5 Cu3 Cl6 I2 , compared with the pure chloride phase. The present findings provide a new perspective for developing air-stable alkali copper(I) halides with highly efficient luminescence
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|a Journal Article
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|a Cs5Cu3Cl6I2
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|a Pb-free luminescent halides
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|a air stability
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| 650 |
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|a high PLQY
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| 650 |
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4 |
|a mixed anions
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1 |
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|a Inoshita, Takeshi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ying, Tianping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ooishi, Atsushi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Junghwan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hosono, Hideo
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 37 vom: 23. Sept., Seite e2002945
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:37
|g day:23
|g month:09
|g pages:e2002945
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|u http://dx.doi.org/10.1002/adma.202002945
|3 Volltext
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