Facile One-Pot Synthesis and Optical Properties of Quinary Wurtzite Cu3ZnInSnS6 Nanocrystals

Nearly monodisperse bullet-like Cu 3 ZnInSnS 6 (CZITS) nanocrystals with wurtzite structure were successfully synthesized through optimized noninjection method. The structure, composition, morphology and optical properties of CZITS nanocrystals were characterized by X-ray diffraction, energy dispersive spectrometry, transmission electron microscopy and UV-Vis–NIR absorption. Their suitable bandgap and photoresponsive behavior indicate a high potential application in the field of solar cells. The growth mechanism of the as-synthesized CZITS nanocrystals was preliminarily discussed. It was found that the formation of CZITS could be separated into two steps: nucleation of Cu 7 S 4 and growth of the CZITS main body.