Graphene/MoS2 hybrid structure and its photoresponse property

Abstract A novel graphene/MoS 2 hybrid structure composed of reduced graphene oxide and MoS 2 nanosheets has been successfully prepared via a facile one-step hydrothermal method. Under the hydrothermal treatment, pristine graphene oxide is reduced and tightly covered with liquid-exfoliated MoS 2 nanosheets. The microstructures and properties have been examined by X-ray diffraction, scanning electron microscopy and Raman spectra. It is found that ultrathin MoS 2 nanosheets with high crystallinity are located on the reduced graphene oxide. The obtained MoS 2 /graphene hybrid structure exhibits preferable photoresponse activity under the illumination of ultraviolet light compared to hybrid materials of MoS 2 bulk and reduced graphene oxide. The improved photoresponse can be attributed to the extremely efficient charge separation, as well as MoS 2 nanostructures of the hybrid structure.