Title: Nucleation site in CVD graphene growth investigated by radiation-mode optical microscopy
Abstract:We investigate the graphene nucleation site in real space using radiation-mode optical microscopy (Rad-OM), which we have developed for the real-time observation of the graphene growth in chemical vap...We investigate the graphene nucleation site in real space using radiation-mode optical microscopy (Rad-OM), which we have developed for the real-time observation of the graphene growth in chemical vapor deposition (CVD) conditions. We found the bright spot in the Rad-OM image worked as a nucleation site through continuous observation of a Cu substrate from pretreatment to graphene growth. The bright spot, considered as a C impurity, was effectively removed by Ar bombardment, which significantly reduced the nucleation density. The present result directly elucidates the role of C impurities and provides a means to grow single-crystalline and large-area graphene via CVD.Read More
Publication Year: 2017
Publication Date: 2017-04-05
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 11
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