Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu 1-xInS 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

doi:10.1021/cm301211e

Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu _1-xInS 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 journal › Article › peer-review

290 Scopus citations

Abstract

We report a high-yield, low cost synthesis route to colloidal Cu _1-xInS 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 language	English (US)
Pages (from-to)	2400-2406
Number of pages	7
Journal	Chemistry of Materials
Volume	24
Issue number	12
DOIs	https://doi.org/10.1021/cm301211e
State	Published - Jun 26 2012
Externally published	Yes

Keywords

CIS
CIZS
XPS
cation exchange
nanocrystals
photoluminescence
quaternary systems

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

Access to Document

10.1021/cm301211e

Cite this

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title = "Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu 1-xInS 2 nanocrystals by partial cation exchange",

abstract = "We report a high-yield, low cost synthesis route to colloidal Cu 1-xInS 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.",

keywords = "CIS, CIZS, XPS, cation exchange, nanocrystals, photoluminescence, quaternary systems",

author = "{De Trizio}, Luca and Mirko Prato and Alessandro Genovese and Alberto Casu and Mauro Povia and Roberto Simonutti and Alcocer, {Marcelo J.P.} and Cosimo D'Andrea and Francesco Tassone and Liberato Manna",

year = "2012",

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T1 - Strongly fluorescent quaternary Cu-In-Zn-S nanocrystals prepared from Cu 1-xInS 2 nanocrystals by partial cation exchange

AU - De Trizio, Luca

AU - Prato, Mirko

AU - Genovese, Alessandro

AU - Casu, Alberto

AU - Povia, Mauro

AU - Simonutti, Roberto

AU - Alcocer, Marcelo J.P.

AU - D'Andrea, Cosimo

AU - Tassone, Francesco

AU - Manna, Liberato

PY - 2012/6/26

Y1 - 2012/6/26

N2 - We report a high-yield, low cost synthesis route to colloidal Cu 1-xInS 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.

AB - We report a high-yield, low cost synthesis route to colloidal Cu 1-xInS 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.

KW - CIS

KW - CIZS

KW - XPS

KW - cation exchange

KW - nanocrystals

KW - photoluminescence

KW - quaternary systems

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