Compositionally-tunable mechanochemical synthesis of ZnxCo3−xO4 nanoparticles for mesoporous p-type photocathodes

Shannon M. McCullough; Cory J. Flynn; Candy C. Mercado; Arthur J. Nozik; James F. Cahoon

doi:10.1039/C5TA07491F

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Compositionally-tunable mechanochemical synthesis of Zn_xCo_3−xO₄ nanoparticles for mesoporous p-type photocathodes†

Shannon M. McCullough,^a Cory J. Flynn,^a Candy C. Mercado,^b Arthur J. Nozik^bc and James F. Cahoon*^a

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* Corresponding authors

^a Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
E-mail: jfcahoon@unc.edu

^b Renewable and Sustainable Energy Institute, Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0027, USA

^c National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401, USA

Abstract

A solid-state mechanochemical synthesis of Zn_xCo_3−xO₄ was developed with highly tunable Zn concentration. Photovoltaic performance was evaluated in dye-sensitized solar cells and tested with various Zn concentrations, exhibiting maximum performance with ZnCo₂O₄. Oxidative treatments led to a nearly three-fold increase in dye loading and a significant increase in short-circuit current density.

This article is part of the themed collection: 2015 Journal of Materials Chemistry A Hot Papers

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Article information

DOI: https://doi.org/10.1039/C5TA07491F
Article type: Communication
Submitted: 18 Sep 2015
Accepted: 14 Oct 2015
First published: 14 Oct 2015

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J. Mater. Chem. A, 2015,3, 21990-21994

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Compositionally-tunable mechanochemical synthesis of Zn_xCo_3−xO₄ nanoparticles for mesoporous p-type photocathodes

S. M. McCullough, C. J. Flynn, C. C. Mercado, A. J. Nozik and J. F. Cahoon, J. Mater. Chem. A, 2015, 3, 21990 DOI: 10.1039/C5TA07491F

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Journal of Materials Chemistry A