Synthesis and properties of Cu2(FexZn1−x)SnS4 nanocrystals by microwave irradiation assisted solvothermal method

• Cu2(FexZn1−x)SnS4 nanocrystals were fabricated by microwave irradiation.
• Cu2(FexZn1−x)SnS4 nanocrystals have a single phase, stoichiometric composition.
• The band gap of Cu2(FexZn1−x)SnS4 nanocrystals is tuned from 1.24 eV to 1.54 eV.

In this paper, Cu2(FexZn1−x)SnS4 nanocrystals were synthesized by a microwave irradiation assisted solvothermal method. The properties of Cu2(FexZn1−x)SnS4 nanocrystals were studied by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV–vis spectroscopy. The results showed that as-synthesized Cu2(FexZn1−x)SnS4 nanocrystals had a single phase and stoichiometric composition. The average crystalline size increased with increasing x. Moreover, the band gaps of Cu2(FexZn1−x)SnS4 nanocrystals decreased with increasing x.

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