Abstract
We reported a fabrication of Cu2ZnSnSe4 (CZTSe) via an elemental solvo-thermal method. To suppress the sublimation of Se, we made use of binary compounds of high vaporization temperature by first converting solid Se into a liquid-like alloy. Single-phase CZTSe compounds with the band gap of 1.32 eV were successfully synthesized and characterized. The effect of synthesizing temperature on the formation of CZTSe was also investigated.