Study of the Surface Morphology of Thermally Annealed Copper Foils and Various Transfer Methods for Graphene

Abstract

The surface morphology of thermally annealed copper foils utilized for graphene growth by chemical vapor deposition (CVD) has been studied by Optical microscopy, Scanning Electron Microscopy (SEM), and Scanning Tunneling Microscopy (STM) as a function of heat treatment. This study reports on the surface roughness and relative grain size before and after thermal annealing. The main results are that (a) the graphene covered foil exhibits reduced surface roughness, and (b) the graphene film preserves an imprint of the Cu grain structure. In the second part of the work, the transfer of CVD graphene is ex-perimentally investigated using Poly(methyl methacrylate) (PMMA), Polycarbonate (PC), and Polysty-rene (PS). Noticeable improvement to surface cleanness as well as electrical properties of graphene is observed after the ethanol treatment. Finally, Raman characterization showed apparent blue-shifts of the G and 2D bands suggesting that the graphene is heavily doped after the ethanol treatment.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2013
Accession Number
ADA624842

Entities

People

  • Olesya Sarajlic

Organizations

  • Georgia State University

Tags

DTIC Thesaurus Topics

  • Alkenes
  • Band Structures
  • Charge Carriers
  • Chemical Synthesis
  • Chemical Vapor Deposition
  • Chemistry
  • Electrical Properties
  • Electron Microscopy
  • Energy Bands
  • Fullerenes
  • Heat Treatment
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Silicon Carbide
  • Thermoplastic Resins

Fields of Study

  • Materials science

Readers

  • Nanoscale Plasmonic Nanotechnology
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene