Colloidal synthesis of zincblende Cu3InZnSnS6 nanocrystals and their optical property

Multinary metal sulfides semiconductor nanocrystals have received great attention for their application in solar cells. In this work, we have successfully synthesized the Cu3InZnSnS6 nanocrystals via a colloidal way. The Cu3InZnSnS6 nanocrystals were characterized by X-ray powder diffraction, energy dispersive X-ray spectrometry, transmission electron microscopy and UV-vis spectrometry. The Cu3InZnSnS6 nanocrystals possess metastable zincblende structure, stoichiometric composition and good dispersed property in organic solvent. The bandgap of Cu3InZnSnS6 nanocrystals calculated from UV-vis spectrometry is 1.44 eV, which is the optimal bandgap for photovoltaic absorber, and it displays a potential application in the field of thin film solar cells.