Strongly Fluorescent Quaternary Cu–In–Zn–S Nanocrystals Prepared from Cu 1- x InS 2 Nanocrystals by Partial Cation Exchange
2012; American Chemical Society; Volume: 24; Issue: 12 Linguagem: Inglês
10.1021/cm301211e
ISSN1520-5002
AutoresLuca De Trizio, Mirko Prato, Alessandro Genovese, Alberto Casu, Mauro Povia, Roberto Simonutti, Marcelo J. P. Alcocer, Cosimo D’Andrea, F. Tassone, Liberato Manna,
Tópico(s)Copper-based nanomaterials and applications
ResumoWe report a high-yield, low cost synthesis route to colloidal Cu1-xInS2 nanocrystals with a tunable amount of Cu vacancies in the crystal lattice. These are then converted into quaternary Cu–In–Zn–S (CIZS) nanocrystals by partial exchange of Cu+ and In3+ cations with Zn2+ cations. The photoluminescence quantum yield of these CIZS nanocrystals could be tuned up to a record 80%, depending on the amount of copper vacancies.
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