Abstract
AbstractThe quaternary chalcogenide Cu2FeSnS4 is important and interesting owing to its many advantageous characteristics for photovoltaic and optoelectronic applications, such as a suitable direct band gap (1.0–1.5 eV), low toxicity, and a relatively high abundance of the elements in the Earth's crust. To date, most of the reports on Cu2FeSnS4 have focused on the synthetic method and optical properties, and few studies have comprehensively and systematically reported the growth mechanism of Cu2FeSnS4 nanoparticles. Therefore, we have synthesized Cu2FeSnS4 nanocrystals by a simple hot‐injection method and performed detailed characterizations. Raman spectroscopy is a characterization tool to differentiate the mixed‐composition phases in the synthetic pathway of Cu2FeSnS4 nanocrystals, which cannot be efficiently distinguished by X‐ray diffraction. A possible synthesis mechanism for Cu2FeSnS4 has been proposed.
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