Optimization of the Cu2ZnSnS4 nanocrystal recipe by means of photoelectrochemical measurements

Daniel Vaccarello; Amy Tapley; Zhifeng Ding

doi:10.1039/C2RA23163H

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Optimization of the Cu₂ZnSnS₄nanocrystal recipe by means of photoelectrochemical measurements†

Daniel Vaccarello,^a Amy Tapley^a and Zhifeng Ding*^a

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* Corresponding authors

^a Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
E-mail: zfding@uwo.ca
Fax: 01 519 661 3022
Tel: 01 519 661 2111 x86161

Abstract

Cu₂ZnSnS₄ nanocrystals (NCs) were synthesized via a low-cost one-pot method. The recipe was optimized by using photoelectrochemical measurements of NC films in contact with a methyl viologen solution. Non-stoichiometric copper-rich and zinc-poor starting molar ratios provided the best overall photovoltaic effect. Other analytical techniques were used to further identify the NC composition, topography and crystallinity. The oxidation states were found to be 1+, 2+, 4+ and 2− for copper, zinc, tin and sulphur, respectively.

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Article information

DOI: https://doi.org/10.1039/C2RA23163H
Article type: Communication
Submitted: 16 Aug 2012
Accepted: 04 Jan 2013
First published: 07 Jan 2013

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RSC Adv., 2013,3, 3512-3515

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Optimization of the Cu₂ZnSnS₄ nanocrystal recipe by means of photoelectrochemical measurements

D. Vaccarello, A. Tapley and Z. Ding, RSC Adv., 2013, 3, 3512 DOI: 10.1039/C2RA23163H

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