DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Your Clean Graphene is Still Not Clean

Journal Article · · Advanced Materials Interfaces
ORCiD logo [1];  [2];  [1];  [3];  [1];  [1]
  1. Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37830 USA
  2. Department of Physical Sciences Physics Division College of Science Jazan University Jazan 82817‐2820 Kingdom of Saudi Arabia, Department of Physics and Astronomy Georgia State University Atlanta GA 30303 USA
  3. NanoScience Technology Center University of Central Florida Orlanda FL 32826 USA, Department of Materials Science and Engineering University of Central Florida Orlando FL 32816 USA

Abstract Researchers working with thin samples, such as monolayer graphene, are consistently struggling against contamination. Indeed, the problem of hydrocarbon contamination is known from the earliest days of electron microscopy and efforts to reduce this problem are ubiquitous to almost all high‐vacuum experiments. Accurate knowledge of the behavior of such contamination is essential for electron beam (e‐beam) based atomic fabrication, where it is aspired to select and control matter on an atom‐by‐atom basis. Here, the vexing question of hydrocarbon contamination on graphene is taken up. Image intensity is used to directly reveal the presence of diffusing hydrocarbons on ostensibly clean graphene. These diffusing hydrocarbons are previously inferred but not directly observed. Surprising dynamic variations of the concentration of these hydrocarbons impels questions about their origin. Here, some possible explanations are presented and some tentative conclusions are drawn. This work updates the conceptual model of “clean graphene” and offers refinements to the description of e‐beam induced hydrocarbon deposition.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2478937
Journal Information:
Advanced Materials Interfaces, Journal Name: Advanced Materials Interfaces; ISSN 2196-7350
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

References (43)

Clean‐Lifting Transfer of Large‐area Residual‐Free Graphene Films journal June 2013
The Synthescope: A Vision for Combining Synthesis with Atomic Fabrication journal August 2023
Top‐Down Fabrication of Atomic Patterns in Twisted Bilayer Graphene journal June 2023
Discovery of Graphene‐Water Membrane Structure: Toward High‐Quality Graphene Process journal July 2022
Direct Observation of Atomic Dynamics and Silicon Doping at a Topological Defect in Graphene journal June 2014
Controlling hydrocarbon transport and electron beam induced deposition on single layer graphene: Toward atomic scale synthesis in the scanning transmission electron microscope journal July 2021
Cleaning graphene: Comparing heat treatments in air and in vacuum: Cleaning graphene journal July 2017
Building Structures Atom by Atom via Electron Beam Manipulation journal August 2018
Atomically Precise Control of Carbon Insertion into hBN Monolayer Point Vacancies using a Focused Electron Beam Guide journal May 2021
A Platform for Atomic Fabrication and In Situ Synthesis in a Scanning Transmission Electron Microscope journal July 2023
Toward High Carrier Mobility and Low Contact Resistance: Laser Cleaning of PMMA Residues on Graphene Surfaces journal May 2016
Z-contrast stem for materials science journal June 1989
Specimen contamination in analytical electron microscopy: Sources and solutions journal January 1978
Large scale atmospheric pressure chemical vapor deposition of graphene journal April 2013
Clean graphene surface through high temperature annealing journal November 2015
Electron-beam introduction of heteroatomic Pt–Si structures in graphene journal May 2020
Doping transition-metal atoms in graphene for atomic-scale tailoring of electronic, magnetic, and quantum topological properties journal March 2021
Indirect measurement of the carbon adatom migration barrier on graphene journal August 2022
The role of temperature on defect diffusion and nanoscale patterning in graphene journal January 2023
Manipulating low-dimensional materials down to the level of single atoms with electron irradiation journal September 2017
Atom-by-Atom Direct Writing journal March 2023
Doping of Cr in Graphene Using Electron Beam Manipulation for Functional Defect Engineering journal October 2020
Single Indium Atoms and Few-Atom Indium Clusters Anchored onto Graphene via Silicon Heteroatoms journal August 2021
Graphene Annealing: How Clean Can It Be? journal December 2011
Graphene Reknits Its Holes journal July 2012
Clean Transfer of Graphene for Isolation and Suspension journal February 2011
Toward Clean and Crackless Transfer of Graphene journal October 2011
Si-Compatible Cleaning Process for Graphene Using Low-Density Inductively Coupled Plasma journal April 2012
Molecule-by-Molecule Writing Using a Focused Electron Beam journal October 2012
Direct visualization of reversible dynamics in a Si6 cluster embedded in a graphene pore journal April 2013
Fiji: an open-source platform for biological-image analysis journal June 2012
Mechanical cleaning of graphene using in situ electron microscopy journal April 2020
Toward clean suspended CVD graphene journal January 2016
Current-induced cleaning of graphene journal October 2007
Mechanical cleaning of graphene journal February 2012
Dry-cleaning of graphene journal April 2014
Cleaning graphene with a titanium sacrificial layer journal June 2014
Placing single atoms in graphene with a scanning transmission electron microscope journal September 2017
Single-atom spectroscopy of phosphorus dopants implanted into graphene journal February 2017
Trainable Weka Segmentation: a machine learning tool for microscopy pixel classification journal March 2017
Electron-Beam-Induced Carbon Contamination in STEM-in-SEM: Quantification and Mitigation journal December 2022
Silicon–Carbon Bond Inversions Driven by 60-keV Electrons in Graphene journal September 2014
Ultraclean freestanding graphene by platinum-metal catalysis
  • Longchamp, Jean-Nicolas; Escher, Conrad; Fink, Hans-Werner
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 31, Issue 2 https://doi.org/10.1116/1.4793746
journal March 2013