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Advances in Nano Research Volume 5, Number 3, September 2017 , pages 203-214 DOI: https://doi.org/10.12989/anr.2017.5.3.203 |
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Evolution pathway of CZTSe nanoparticles synthesized by microwave-assisted chemical synthesis |
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Odín Reyes, Mónica F. Sánchez, Mou Pal, Jordi Llorca and P.J. Sebastian
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| Abstract | ||
| In this study we present the reaction mechanism of Cu2ZnSnSe4 (CZTSe) nanoparticles synthesized by microwave-assisted chemical synthesis. We performed reactions every 10 minutes in order to identify different phases during quaternary CZTSe formation. The powder samples were analyzed by x-ray diffraction (XRD), Raman spectroscopy, energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The results showed that in the first minutes copper phases are predominant, then copper and tin secondary phases react to form ternary phase. The quaternary phase is formed at 50 minutes while ternary and secondary phases are consumed. At 60 minutes pure quaternary CZTSe phase is present. After 60 minutes the quaternary phase decomposes in the previous ternary and secondary phases, which indicates that 60 minutes is ideal reaction time. The EDS analysis of pure quaternary nanocrystals (CZTSe) showed stoichiometric relations similar to the reported research in the literature, which falls in the range of Cu/(Zn+Sn): 0.8-1.0, Zn/Sn: 1.0-1.20. In conclusion, the evolution pathway of CZTSe synthesized by this novel method is similar to other synthesis methods reported before. Nanoparticles synthesized in this study present desirable properties in order to use them in solar cell and photoelectrochemical cell applications. | ||
| Key Words | ||
| CZTSe; solar cell; nanoparticles; microwave-assisted chemical synthesis | ||
| Address | ||
| (1) Odín Reyes, Mónica F. Sánchez, P.J. Sebastian: Instituto de Energias Renovables-UNAM, Temixco, Morelos, 62580, México; (2) Mou Pal: Instituto de Fisica, BUAP, Puebla, 72570, Mexico; (3) Jordi Llorca: Institute of Energy Technologies and Barcelona Research Center, in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, Eduard Maristany 10-14, 08019 Barcelona, Spain. | ||