▎ 摘　　要

Graphene film pattern was prepared by photo-chemical reduction. The thermal stability and photoluminescence(PL) properties of photo-chemical reduction graphene oxide(PRGO) were studied. Thermogravimetric analysis(TGA) results show that the photochemical reduction mainly causes the decrease of oxidation groups in the graphene oxide(GO) sheets, but has little effect on the water content in GO. PL results show that the emission of PRGO is obviously different from those of common-method-made GO when different laser wavelengths are used for excitation. When excited with 514 nm laser, the PL intensity of PRGO was lower than that of GO, accompanied with a red-shift of emission peak. In contrast, when an 830 nm laser is used, the PL intensity of PRGO is slightly higher than that of GO while the PL center positions are similar. The results indicate that the sp(2)C clusters with different sizes have different photoreduction activity, which is closely related to the unique band structures of GO.