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intercalation of metals and silicon at the interface of epitaxial graphene and its substrates

Chinese Physics B 2013年第9期22卷 54-62页

作者：黄立徐文焱阙炎德毛金海孟蕾潘理达李更王业亮杜世萱刘云圻高鸿钧 Institute of Physics Chinese Academy of Sciences Institute of Chemistry Chinese Academy of Sciences

intercalations of metals and silicon between epitaxial graphene and its substrates are reviewed. For metal intercala- tion, seven different metals have been successfully intercalated at the interface of graphene/Ru（O001） and form different intercalated structures. Meanwhile, graphene maintains its original high quality after the intercalation and shows features of weakened interaction with the substrate. For silicon intercalation, two systems, graphene on Ru（O001） and on Ir（l I 1）, have been investigated. In both cases, graphene preserves its high quality and regains its original superlative properties after the silicon intercalation. More importantly, we demonstrate that thicker silicon layers can be intercalated at the interface, which allows the atomic control of the distance between graphene and the metal substrates. These results show the great potential of the intercalation method as a non-damaging approach to decouple epitaxial graphene from its substrates and even form a dielectric layer for future electronic applications.

关键词： graphene metal intercalation silicon intercalation scanning tunneling microscopy

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intercalation of metals and silicon at the interface of epitaxial graphene and its substrates

Intercalation of metals and silicon at the interface of epit...

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中国真空学会2014学术年会

作者： Li Huang Wenyan Xu Yande Que Jinhai Mao Lei Meng Lida Pan Geng Li Yeliang Wang Shixuan Du YunQi Liu Hong-Jun Gao Institute of Chemistry Chinese Academy of Sciences Institute of Physics Chinese Academy of Sciences

intercalations of metals and silicon between epitaxial graphene and its substrates are *** metal intercalation,seven different metals have been successfully intercalated at the interface of graphene/Ru(0001)and form different intercalated ***,graphene maintains its original high quality after the intercalation and shows features of weakened interaction with the *** silicon intercalation,two systems,graphene on Ru(0001)and on Ir(111),have been *** both cases,graphene preserves its high quality and regains its original superlative properties after the silicon *** importantly,we demonstrate that thicker silicon layers can be intercalated at the interface,which allows the atomic control of the distance between graphene and the metal *** results show the great potential of the intercalation method as a non-damaging approach to decouple epitaxial graphene from its substrates and even form a dielectric layer for future electronic applications.

关键词： graphene metal intercalation silicon intercalation scanning tunneling microscopy

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