Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu 1-x InS 2 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*, Liberato Manna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

239 Scopus citations

Abstract

We report a high-yield, low cost synthesis route to colloidal Cu 1-x InS 2 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 In 3+ cations with Zn 2+ cations. The photoluminescence quantum yield of these CIZS nanocrystals could be tuned up to a record 80%, depending on the amount of copper vacancies.

Original languageEnglish (US)
Pages (from-to)2400-2406
Number of pages7
JournalChemistry of Materials
Volume24
Issue number12
DOIs
StatePublished - Jun 26 2012

Keywords

  • CIS
  • CIZS
  • XPS
  • cation exchange
  • nanocrystals
  • photoluminescence
  • quaternary systems

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu <sub>1-x</sub> InS <sub>2</sub> nanocrystals by partial cation exchange'. Together they form a unique fingerprint.

Cite this