Abstract—The standard enthalpy of formation of selenium stannite Cu2FeSnSe4 (CFTSe) was determined calorimetrically for the first time. This compound does not occur in nature, but is a promising functional material (direct-band semiconductor) and utilized in photovoltaics for fabricating the solar cells alternatively to silicon ones. The standard enthalpy of formation of Cu2FeSnSe4 was obtained by the measurement of heat of its formation from elements in calorimeter according to reaction 2Cu + Fe + Sn + 4Se → Cu2FeSnSe4. As a result, the standard enthalpy of formation of Cu2FeSnSe4 was ∆fH0(298.15 K)cr = –(253.94 ± 3.91) kJ/mol.
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ACKNOWLEDGMENTS
We are grateful to engineers M.V. Fokeev and N.N. Zhdanov for help in the performance of calorimetric experiments. T.N. Dokina is thanked for help with XRF analyses.
Funding
This work was supported by the Russian Foundation for Basic Research (project no. 16-05-00700).
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Translated by M. Bogina
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Baranov, A.V., Stolyarova, T.A., Brichkina, E.A. et al. Standard Enthalpy of the Formation of Selenium Stannite Cu2FeSnSe4. Geochem. Int. 57, 1120–1123 (2019). https://doi.org/10.1134/S0016702919100033
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DOI: https://doi.org/10.1134/S0016702919100033