Standard Enthalpy of the Formation of Selenium Stannite Cu2FeSnSe4

Abstract

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.