Site-Specific Growth of Width-Tailored Graphene Nanoribbons on Insulating Substrates

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• 作者：Wooseok Song ; Soo Youn Kim ; Yooseok Kim ; Sung Hwan Kim ; Su Il Lee ; Inkyung Song ; Cheolho Jeon ; Chong-Yun Park
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：September 20, 2012
• 年：2012
• 卷：116
• 期：37
• 页码：20023-20029
• 全文大小：593K
• 年卷期：v.116,no.37(September 20, 2012)
• ISSN：1932-7455

文摘

The band-gap opening in graphene is a key factor in developing graphene-based field-effect transistors. Although graphene is a gapless semimetal, a band gap opens when graphene is formed into a graphene nanoribbon (GNR). Moreover, the band-gap energy can be manipulated by the width of the GNR. In this study, we propose a site-specific synthesis of a width-tailored GNR directly onto an insulating substrate. Predeposition of a diamond-like carbon nanotemplate onto a SiO₂/Si wafer via focused ion-beam-assisted chemical vapor deposition is first utilized for growth of the GNR. These results may present a feasible route for growing a width-tailored GNR onto a specific region of an insulating substrate.