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Photoexfoliation of two-dimensional materials through continuous UV irradiation

机译：通过连续紫外线辐射进行二维材料的光映射

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摘要

This paper describes the preparation of fluorinated graphene nanosheets (FGNs) through photoexfoliation of fluorinated graphite (FG) in the liquid phase. We discovered that UV irradiation of FG dispersions in N-methyl-2-pyrolidone facilitated exfoliation to give FGNs. Transmission electron microscopy and atomic force microscopy revealed that the average thickness of the FGNs was approximately 3 nm; they were considerably thinner than the nanosheets prepared using a conventional sonication approach. Furthermore, when the FGNs were deposited uniformly onto substrates (through spin coating), they formed effective cathode interlayers for polymer solar cells (PSCs), the efficiency of which was 60% greater than that of PSCs containing FGNs prepared through ultrasonication.
机译：本文描述了通过液相中的氟化石墨（FG）的光映射制备氟化石墨烯纳米片（FGN）。 我们发现，在N-甲基-2-吡咯烷酮中促进剥离的UV分散体的UV照射，得到FGN。 透射电子显微镜和原子力显微镜显示，FGN的平均厚度约为3nm; 它们比使用常规超声处理方法制备的纳米片更薄。 此外，当FGN均匀地沉积在基材上时（通过旋涂），它们形成了用于聚合物太阳能电池（PSC）的有效阴极夹层，其效率比通过超声波制备的FGNs的PSC的效率大于60％。

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