石墨烯粉体材料缺陷密度的拉曼光谱表征方法

来源 :2016石墨烯产业·技术高峰论坛暨第14届海峡两岸碳材料研讨会 | 被引量 : 0次 | 上传用户:effielove0228
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  当石墨烯片层的缺陷密度较高时,材料的许多本征特性会受到极大的影响[1]。因此,对石墨烯材料的缺陷密度进行有效的测量,是目前一些石墨烯材料检测和表征的工作重心。不同于石墨烯薄膜,石墨烯粉体不能沿用拉曼光谱的I(D)/I(G)作为缺陷密度的参数。因为粉体中大量的片层边界会提供极强的D峰信号,这使D峰的峰强度更多取决于片层的边界情况,而非石墨烯片层内部的点缺陷密度[2]。
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