Highly Tunable Emission by Halide Engineering in Lead-Free Perovskite-Derivative Nanocrystals: The Cs2SnX6 (X = Cl, Br, Br/I, I) System
Author(s) -
Alessandro Veronese,
M. Patrini,
Daniele Bajoni,
Carlo Ciarrocchi,
Paolo Quadrelli,
Lorenzo Malavasi
Publication year - 2020
Publication title -
frontiers in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.027
H-Index - 52
ISSN - 2296-2646
DOI - 10.3389/fchem.2020.00035
Subject(s) - halide , perovskite (structure) , nanocrystal , derivative (finance) , lead (geology) , materials science , crystal engineering , chemistry , inorganic chemistry , chemical engineering , photochemistry , nanotechnology , crystallography , crystal structure , engineering , supramolecular chemistry , geomorphology , geology , financial economics , economics
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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom