采用化学气相沉积法,以SiO2/Si为衬底、镍膜为催化层,研究不同催化层厚度对石墨烯生长的影响.选择拉曼光谱,透射电子显微镜等手段对石墨烯的层数和质量进行表征.结果表明,随着Ni膜厚度的增加,石墨烯的缺陷减小,而且层数也减少,当Ni膜厚度为300 nm时,可以在SiOJSi基板上获得高质量的单层石墨烯.
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