Highly Tunable Emission by Halide Engineering in Lead-Free Perovskite-Derivative Nanocrystals: The Cs(2)SnX(6) (X = Cl, Br, Br/I, I) System

Nanocrystals of Cs(2)SnX(6) (X = Cl, Br, Br(0.5)I(0.5), and I) have been prepared by a simple, optimized, hot-injection method, reporting for the first time the synthesis of Cs(2)SnCl(6), Cs(2)SnBr(6), and mixed Cs(2)Sn(I(0.5)Br(0.5))(6) nanocrystalline samples. They all show a cubic crystal structu...

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Detalles Bibliográficos
Autores principales: Veronese, Alessandro, Patrini, Maddalena, Bajoni, Daniele, Ciarrocchi, Carlo, Quadrelli, Paolo, Malavasi, Lorenzo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7004971/
https://www.ncbi.nlm.nih.gov/pubmed/32083055
http://dx.doi.org/10.3389/fchem.2020.00035
Descripción
Sumario:Nanocrystals of Cs(2)SnX(6) (X = Cl, Br, Br(0.5)I(0.5), and I) have been prepared by a simple, optimized, hot-injection method, reporting for the first time the synthesis of Cs(2)SnCl(6), Cs(2)SnBr(6), and mixed Cs(2)Sn(I(0.5)Br(0.5))(6) nanocrystalline samples. They all show a cubic crystal structure with a linear scaling of lattice parameter by changing the halide size. The prepared nanocrystals have spherical shape with average size from 3 to 6 nm depending on the nature of the halide and span an emission range from 444 nm (Cs(2)SnCl(6)) to 790 nm (Cs(2)SnI(6)) with a further modulation provided by mixed Br/I systems.

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