Cu_2ZnSnS_4nanocrystals have been successfully synthesized via a hot injection method in the solution of oleylamine(OLA),which is used as the activation agent and capping agent.Copper(II)acetylacetonate,Zinc acetate and Tin chloride dehydrate were used as the starting materials.The sample were characterized by means of X-ray diffraction(XRD),UVvis-NIR spectroscopy,scan electron microscopy(SEM)and transmission electron microscope(TEM).The influences of reaction temperature and time on the phase structure and...