Artículo
Chalcogenide Quaternary Cu2FeSnS4 Nanocrystals for Solar Cells: Explosive Character of Mechanochemical Synthesis and Environmental Challenge
Autor/es | 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 de publicación | 2017 |
Fecha de depósito | 2018-03-20 |
Publicado en |
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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 ... 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 photocatalytic activity of the CFTS nanocrystals was also evidenced. The obtained results confirm the excellent properties of the quaternary semiconductor nanocrystals synthesized from earth-abundant elements. |
Agencias financiadoras | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | APVV-0103-14
26220120038 |
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. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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chacolgenide quaternary Cu2.pdf | 2.515Mb | [PDF] | Ver/ | |