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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202001868
|2 doi
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|a pubmed24n1042.xml
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|a (DE-627)NLM312626088
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|a (NLM)32686270
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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 Kim, Joon Young
|e verfasserin
|4 aut
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|a Quantum Dots of [Na4 Cs6 PbBr4 ]8+ , Water Stable in Zeolite X, Luminesce Sharply in the Green
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|c 2020
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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 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 Verlag GmbH & Co. KGaA, Weinheim.
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|a Nanocrystals (NCs) of CsPbX3 , X = Cl, Br, or I, have excellent photoluminescent properties: high quantum yield, tunable emission wavelengths (410-700 nm), and narrow emission band widths. CsPbBr3 NCs show high promise as a green-emitting material for use in wide color gamut displays. CsPbBr3 NCs have, however, not been commercialized because they are sensitive to moisture and heat. To avoid these problems, this work attempts to introduce CsPbBr3 into five zeolites. The zeolite X product, Pb,Br,H,Cs,Na-X, shows superior stability toward moisture, maintaining its initial luminescence properties after being under water for more than a month. Its structure, determined using single-crystal X-ray crystallography, shows that quantum dots (QDs) of [Na4 Cs6 PbBr4 ]8+ (not of CsPbBr3 ) have formed. They are tetrahedral PbBr4 2- ions (Pb-Br = 3.091(11) Å) surrounded by Na+ and Cs+ ions. Each fills the zeolite's supercage with its Pb2+ ion precisely at the center, a position of high symmetry. The peaks in the emission spectra of Pb,Br,H,Cs,Na-X and the CsPbBr3 NCs are both at about 520 nm. The FWHM of Pb,Br,H,Cs,Na-X, however, is narrower than any previously reported for any of the CsPbBr3 NCs, and for zeolite Y and the various mesoporous materials treated with CsPbBr3
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|a Journal Article
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|a green-emitting materials
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|a lead bromide
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|a luminescence
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|a quantum dots
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|a zeolite X
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|a Shim, Kyu In
|e verfasserin
|4 aut
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|a Han, Jeong Woo
|e verfasserin
|4 aut
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|a Joo, Jin
|e verfasserin
|4 aut
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|a Heo, Nam Ho
|e verfasserin
|4 aut
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|a Seff, Karl
|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 32(2020), 34 vom: 19. Aug., Seite e2001868
|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:34
|g day:19
|g month:08
|g pages:e2001868
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|u http://dx.doi.org/10.1002/adma.202001868
|3 Volltext
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