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Issue 37, 2013
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Phosphate-free synthesis, optical absorption and photoelectric properties of Cu2ZnGeS4 and Cu2ZnGeSe4 uniform nanocrystals

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Abstract

Copper-based quaternary chalcogenide semiconductor Cu2ZnGeS4 and Cu2ZnGeSe4 nanocrystals have been synthesized successfully via a simple and convenient one-pot phosphine-free solution approach. Oleylamine was used as both the solvent and reductant for Se or S and benefited the formation of homogeneous quaternary nanocrystals. Scanning transmission electron microscopy-EDS elemental mapping confirms the uniform spatial distribution of four elements in nanocrystals. UV-Vis absorption spectra of Cu2ZnGeS4 and Cu2ZnGeSe4 nanocrystals show strong photon absorption in the entire visible range. The photoresponsive behavior indicates the potential application of Cu2ZnGeSe4 nanocrystals in solar energy conversion systems.

Graphical abstract: Phosphate-free synthesis, optical absorption and photoelectric properties of Cu2ZnGeS4 and Cu2ZnGeSe4 uniform nanocrystals

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Publication details

The article was received on 16 Apr 2013, accepted on 05 Jul 2013 and first published on 05 Jul 2013


Article type: Paper
DOI: 10.1039/C3DT50993A
Citation: Dalton Trans., 2013,42, 13607-13611
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    Phosphate-free synthesis, optical absorption and photoelectric properties of Cu2ZnGeS4 and Cu2ZnGeSe4 uniform nanocrystals

    L. Shi and P. Yin, Dalton Trans., 2013, 42, 13607
    DOI: 10.1039/C3DT50993A

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