The Backside of Graphene: Manipulating Adsorption by Intercalation

The ease by which graphene is affected through contact with other materials is one of its unique features and defines an integral part of its potential for applications. Here, it will be demonstrated that intercalation, the insertion of atomic layers in between the backside of graphene and the suppo...

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Podrobná bibliografie
Vydáno v:	Nano letters Ročník 13; číslo 11; s. 5013 - 5019
Hlavní autoři:	Schumacher, Stefan, Wehling, Tim O, Lazić, Predrag, Runte, Sven, Förster, Daniel F, Busse, Carsten, Petrović, Marin, Kralj, Marko, Blügel, Stefan, Atodiresei, Nicolae, Caciuc, Vasile, Michely, Thomas
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Washington, DC American Chemical Society 13.11.2013
Témata:	Binding energy Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Contact Cross-disciplinary physics: materials science; rheology Density functional theory Doping Electron states Exact sciences and technology Fullerenes and related materials; diamonds, graphite Graphene Insertion Intercalation Materials science Methods of electronic structure calculations Physics Solid surfaces and solid-solid interfaces Specific materials Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) doping adsorption work function intercalation STM graphene Europium additions Scanning tunneling microscopy Adsorption Graphene Binding energy Adsorbates Doping Theoretical study Density functional method Nitrogen additions Phosphorus additions
ISSN:	1530-6984, 1530-6992, 1530-6992
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Popis
Shrnutí:	The ease by which graphene is affected through contact with other materials is one of its unique features and defines an integral part of its potential for applications. Here, it will be demonstrated that intercalation, the insertion of atomic layers in between the backside of graphene and the supporting substrate, is an efficient tool to change its interaction with the environment on the frontside. By partial intercalation of graphene on Ir(111) with Eu or Cs we induce strongly n-doped graphene patches through the contact with these intercalants. They coexist with nonintercalated, slightly p-doped graphene patches. We employ these backside doping patterns to directly visualize doping induced binding energy differences of ionic adsorbates to graphene through low-temperature scanning tunneling microscopy. Density functional theory confirms these binding energy differences and shows that they are related to the graphene doping level.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1530-6984 1530-6992 1530-6992
DOI:	10.1021/nl402797j