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Strongly Fluorescent Quaternary Cu-In-Zn-S Nanocrystals Prepared from Cu1-xInS2 Nanocrystals by Partial Cation Exchange
Journal article   Peer reviewed

Strongly Fluorescent Quaternary Cu-In-Zn-S Nanocrystals Prepared from Cu1-xInS2 Nanocrystals by Partial Cation Exchange

Luca De Trizio, Mirko Prato, Alessandro Genovese, Alberto Casu, Mauro Povia, Roberto Simonutti, Marcelo J. P. Alcocer, Cosimo D'Andrea, Francesco Tassone and Liberato Manna
Chemistry of materials, Vol.24(12), pp.2400-2406
26/06/2012
DOI: https://doi.org/10.1021/cm301211e

Abstract

Chemistry Chemistry, Physical Materials Science Materials Science, Multidisciplinary Physical Sciences Science & Technology Technology
We 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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