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Issue 3, 2014
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Facile single-component precursor for Cu2ZnSnS4 with enhanced phase and composition controllability

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Abstract

A simple and effective method has been demonstrated using soluble single-component precursors to achieve high quality Cu2ZnSnS4 (CZTS) thin films with enhanced phase and composition controllability. The soluble single-component precursors were composed of Cu2−xS colloidal nanocrystals (NC) and the homogeneously distributed Zn–Sn species on the surface. Zn species is presented as the surface ligand for the first time, in the form of Zn–Sn complex, providing both the colloidal stabilization and the essential components for CZTS. CZTS film composition is governed by the prescribed stoichiometry between Cu2−xS nanoparticles and the Zn–Sn complex in solution. This novel reaction process enables a favorable CZTS phase progression, with less than 175 °C formation temperature, and a minimized secondary phase growth mode, due to its local composition uniformity in both liquid and film state. Compared with the approaches based on molecular precursor or quarternary CZTS nanocrystals, the single-component precursor allows fine tuning of the kesterite materials for future advanced optoelectronics.

Graphical abstract: Facile single-component precursor for Cu2ZnSnS4 with enhanced phase and composition controllability

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Publication details

The article was received on 15 Sep 2013, accepted on 25 Nov 2013 and first published on 26 Nov 2013


Article type: Communication
DOI: 10.1039/C3EE43101K
Citation: Energy Environ. Sci., 2014,7, 998-1005
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    Facile single-component precursor for Cu2ZnSnS4 with enhanced phase and composition controllability

    H. Zhou, H. Duan, W. Yang, Q. Chen, C. Hsu, W. Hsu, C. Chen and Y. Yang, Energy Environ. Sci., 2014, 7, 998
    DOI: 10.1039/C3EE43101K

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