Issue 11, 2010

Synthesis of Ag–In binary sulfidenanoparticles—structural tuning and their photoluminescence properties

Abstract

In this report, we demonstrate the synthesis of binary sulfide Ag–In–S NPs using a Ag–In thiolate complex. Thermal decomposition of the thiolate complex provides Ag/AgInS2 heterostructured nanoparticles (NPs). A metathesis reaction between the thiolate complex and sulfur source leads to the formation of nearly monodispersed AgInS2 NPs with a chalcopyrite-like or orthorhombic structure. AgInS2 NPs with a chalcopyrite-like structure exhibited room temperature photoluminescence (PL). Spectral shift of the PL band depending on the excitation laser intensity and characteristic behavior of the PL decay time varying over a wide energy range within the PL band were observed. These results indicate that the PL of the AgInS2 NPs may be attributed to the donor–acceptor (D–A) pair recombination.

Graphical abstract: Synthesis of Ag–In binary sulfide nanoparticles—structural tuning and their photoluminescence properties

Article information

Article type
Paper
Submitted
06 Oct 2009
Accepted
17 Dec 2009
First published
02 Feb 2010

J. Mater. Chem., 2010,20, 2226-2231

Synthesis of Ag–In binary sulfide nanoparticles—structural tuning and their photoluminescence properties

T. Ogawa, T. Kuzuya, Y. Hamanaka and K. Sumiyama, J. Mater. Chem., 2010, 20, 2226 DOI: 10.1039/B920732E

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