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Chalcogenide Quaternary Cu2FeSnS4 Nanocrystals for Solar Cells: Explosive Character of Mechanochemical Synthesis and Environmental Challenge

Opened Access Chalcogenide Quaternary Cu2FeSnS4 Nanocrystals for Solar Cells: Explosive Character of Mechanochemical Synthesis and Environmental Challenge

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Autor: Baláž, Peter
Baláž, Matej
Sayagués de Vega, María Jesús
Eliyas, Alexander
Kostova, Nina G.
Dutková, Erika
Zorkovská, Anna
Kanuchová, Mária
Departamento: Universidad de Sevilla. Departamento de Química Inorgánica
Fecha: 2017
Publicado en: Crystals, 7, 1-12.
Tipo de documento: Artículo
Resumen: In this study we demonstrate the synthesis of quaternary semiconductor nanocrystals of stannite Cu2FeSnS4/rhodostannite Cu2FeSn3S8 (CFTS) via mechanochemical route using Cu, Fe, Sn and S elements as precursors in one-pot experiments. Methods of X-ray diffraction (XRD), nitrogen adsorption, high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) were applied to characterize properties of the unique nanostructures. Mechanochemical route of synthesis induced new phenomena like explosive character of reaction, where three stages could be identified and the formation of nanostructures 5–10 nm in size. By using XPS method, Cu(I), Fe(II), Sn(IV) and S(-II) species were identified on the surface of CFTS. The value of optical band gap 1.27 eV is optimal for semiconductors applicable as absorbers in solar cells. The significant photocataly...
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Cita: Baláž, P., Baláž, M., Sayagués de Vega, M.J., Eliyas, A., Kostova, N.G., Dutková, E.,...,Kanuchová, M. (2017). Chalcogenide Quaternary Cu2FeSnS4 Nanocrystals for Solar Cells: Explosive Character of Mechanochemical Synthesis and Environmental Challenge. Crystals, 7, 1-12.
Tamaño: 2.515Mb
Formato: PDF

URI: https://hdl.handle.net/11441/71134

DOI: 10.3390/cryst7120367

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