Abstract
Herein, we report the fabrication of hybrid molybdenum disulfide @ zinc oxide (MoS2@ZnO) heterostructure through a simple hydrothermal route. The effect of adding ZnO nanoparticles (NPs) on the physical properties of MoS2 investigated through scanning electron microscopy (SEM), X-ray diffraction (XRD), ultraviolet/visible (UV/Vis) absorption and photoluminescence (PL) spectroscopy. We observed flower-like morphology of MoS2 with randomly oriented 2D petals, upon which spherical shaped ZnO NPs sprinkled, completing a composite heterostructure. Measurement of room temperature PL spectra shows intensive near-band-edge emission peak at 1.8 eV, excited by 340 nm wavelength light. A substantial increase as well as blue-shift in the band-edge emission wavelength of MoS2, in a heterostructured form with ZnO, has been observed as compared to pure MoS2. We observed five-folds enhancement in the intensity of PL spectra in the composite material with (1:1) MoS2 to ZnO NPs; this may be attributed to the strong coupling between MoS2 and ZnO NPs and efficient electrons transfer from MoS2 to ZnO.
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