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Flower-like tungsten disulfide (WS2) with a diameter of 5-10 μm is prepared by chemical vapor deposition (CVD).Scanning electron microscopy (SEM),energy dispersive spectrometer (EDS),Raman spectroscopy,and ultraviolet-visible(UV-vis) spectroscopy are used to characterize its morphological and optical properties,and its growth mechanism is dis-cussed.The key factors for the formation of flower-like WS2 are determined.Firstly,the cooling process causes the generation of nucleation dislocations,and then the “leaf” growth of flower-like WS2 is achieved by increasing the temper-ature.