Graphene Nucleation Preferentially at Oxygen-Rich Cu Sites Rather Than on Pure Cu Surface.

Liang, Tao; He, Guangyu; Huang, Guowei; Kong, Yuhan; Fu, Weifei; Chen, Hongzheng; Wang, Qi; Iwai, Hideo et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

Graphene nucleation at oxygen-rich Cu sites instead of on the commonly assumed pure Cu surface is discovered using high-spatial-resolution scanning Auger electron microscopy, which reveals a strong O signal existing underneath the graphene seeds, along with density functional theory calculations.