Size control and quantum confinement in Cu2ZnSnS4 nanocrystals

Ankur Khare; Andrew W. Wills; Lauren M. Ammerman; David J. Norris; Eray S. Aydil

doi:10.1039/C1CC14687D

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Size control and quantum confinement in Cu₂ZnSnS₄ nanocrystals†

Ankur Khare,^a Andrew W. Wills,^b Lauren M. Ammerman,^b David J. Norris ‡*^a and Eray S. Aydil*^a

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* Corresponding authors

^a Department of Chemical Engineering and Materials Science, 421 Washington Avenue SE, Minneapolis, USA
E-mail: aydil@umn.edu, dnorris@ethz.ch

^b Department of Chemistry, University of Minnesota, 421 Washington Avenue SE, Minneapolis, USA

Abstract

Starting with metal dithiocarbamate complexes, we synthesize colloidal Cu₂ZnSnS₄ (CZTS) nanocrystals with diameters ranging from 2 to 7 nm. Structural and Raman scattering data confirm that CZTS is obtained rather than other possible material phases. The optical absorption spectra of nanocrystals with diameters less than 3 nm show a shift to higher energy due to quantum confinement.

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Article information

DOI: https://doi.org/10.1039/C1CC14687D
Article type: Communication
Submitted: 29 Jul 2011
Accepted: 09 Sep 2011
First published: 27 Sep 2011

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Chem. Commun., 2011,47, 11721-11723

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Size control and quantum confinement in Cu₂ZnSnS₄ nanocrystals

A. Khare, A. W. Wills, L. M. Ammerman, D. J. Norris and E. S. Aydil, Chem. Commun., 2011, 47, 11721 DOI: 10.1039/C1CC14687D

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