▎ 摘　　要

In this work we investigate the addition of n-methyl pyrrolidone solvent on the morphology of spin-coated graphene oxide film. In order to overcome the poor wettability of polyethylene terephthalate substrate by commercially available water graphene oxide suspension, we made two-component suspension with different n-methylpyrrolidone to water ratio. We successfully showed possibility of thin and uniform GO film formation and found optimal solvent ratio. According to optical observations, AFM and Raman spectroscopy defined that the most uniform film was deposited from the suspension with 50:50 water to n-methyl pyrrolidone ratio.