Accession Number:

ADA624842

Title:

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

Descriptive Note:

Master's thesis

Corporate Author:

GEORGIA STATE UNIV ATLANTA RESEARCH FOUNDATION INC

Personal Author(s):

Report Date:

2013-01-01

Pagination or Media Count:

61.0

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 Polymethyl 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.

Subject Categories:

  • Physical Chemistry
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE