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Graphene nanoribbon growth on Au(100)

Au(100)上でのグラフェンナノリボンの成長

矢野 雅大   ; 朝岡 秀人  

Yano, Masahiro; Asaoka, Hidehito

Au(100)とAu(111)上で前駆体分子の自己組織化単層膜を基にボトムアップ合成したグラフェンナノリボンをSTMを用いて観測した。自己組織化単層膜を基にしたグラフェンナノリボンは、基になった分子配向によって配向方位が制御可能であることが明らかになった。特に、Au(100)上ではグラフェンナノリボンの形成方位が基板再構成構造の一次元状の凹凸方位と一致するため、グラフェンナノリボンの形成方位の制御性が高い。これは、グラフェンナノリボンをデバイス応用する上で重要な知見となる。

Graphene nanoribbons that were bottom-up synthesized from self-assembled precursor monolayers on Au(100) and Au(111) were observed by using a scanning tunneling microscope (STM). It was revealed that the molecular orientation of the self-assembled monolayers decides the orientation direction of the graphene nanoribbons. In particular, the orientation direction of the graphene nanoribbons coincides with the one-dimensional uneven of the surface reconstruction structure on Au(100). It means that the controllability of graphene nanoribbon orientation on Au(100) is higher than that of Au(111). This is an important finding for the device application of graphene nanoribbons.

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