Gateless patterning of epitaxial graphene by local intercalation

Sorger C, Hertel S, Jobst J, Steiner C, Meil K, Ullmann K, Albert A, Wang Y, Krieger M, Ristein J, Maier S, Weber HB (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Nanotechnology Institute of Physics: Hybrid Open Access

Publisher: Institute of Physics: Hybrid Open Access

Book Volume: 26

Pages Range: 025302

DOI: 10.1088/0957-4484/26/2/025302

Abstract

We present a technique to pattern the charge density of a large-area epitaxial graphene sheet locally without using metallic gates. Instead, local intercalation of the graphene-substrate interface can selectively be established in the vicinity of graphene edges or prede fined voids. It provides changes of the work function of several hundred meV, corresponding to a conversion from n-type to p-type charge carriers. This assignment is supported by photoelectron spectroscopy, scanning tunneling microscopy, scanning electron microscopy and Hall effect measurements. The technique introduces materials contrast to a graphene sheet in a variety of geometries and thus allows for novel experiments and novel functionalities.

Authors with CRIS profile

Christian Sorger Chair of Applied Physics (LAP) Stefan Hertel Chair of Applied Physics (LAP) Johannes Jobst Chair of Applied Physics (LAP) Christian Steiner Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Konrad Ullmann Chair of Applied Physics (LAP) Yabin Wang Chair of Applied Physics (LAP) Michael Krieger Chair of Applied Physics (LAP) Jürgen Ristein Lehrstuhl für Laserphysik Sabine Maier Professur für Experimentalphysik (Rastersondenmikroskopie) Heiko Weber Chair of Applied Physics (LAP)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM) Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Related research project(s)

None - None Monolithic electronic circuits based on epitaxial graphene Dec. 1, 2013 - Dec. 1, 2016

How to cite

APA:

Sorger, C., Hertel, S., Jobst, J., Steiner, C., Meil, K., Ullmann, K.,... Weber, H.B. (2015). Gateless patterning of epitaxial graphene by local intercalation. Nanotechnology, 26, 025302. https://doi.org/10.1088/0957-4484/26/2/025302

MLA:

Sorger, Christian, et al. "Gateless patterning of epitaxial graphene by local intercalation." Nanotechnology 26 (2015): 025302.

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