Morphology of Graphene on Step-Controlled Sapphire Surfaces

被引：34

作者：

Tsukamoto, Takahiro ^{[1
]}

Ogino, Toshio ^{[1
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Engn, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan

来源：

APPLIED PHYSICS EXPRESS | 2009年 / 2卷 / 07期

基金：

日本学术振兴会;

关键词：

PHOTOEMISSION-SPECTROSCOPY; REACTION SIMULATION; BAND OFFSETS; DIELECTRICS; OXIDES; GAP; OPTIMIZATION; STABILITY; SI;

D O I：

10.1143/APEX.2.075502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Graphene attached on a sapphire surface with regularly ordered step-terrace structure was observed using atomic force microscopy (AFM). We found that graphene tightly adheres to a sapphire surface and the buried step structure on the sapphire surface was clearly observed on the graphene surface. Height of a single-layer graphene was estimated to be approximately 0.36 nm on sapphire surface, which is in good agreement with the theoretical height. These results indicate that sapphire is suitable for the substrate that supports graphene because we can obtain undistorted graphene that is tightly fixed on a substrate surface. (C) 2009 The Japan Society of Applied Physics

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页数：4

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