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Title: Layer-by-Layer Transfer of Multiple, Large Area Sheets of Graphene Grown in Multilayer Stacks on a Single SiC Wafer

Journal Article · · ACS Nano
DOI:https://doi.org/10.1021/nn101896a· OSTI ID:1875530
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States); Chulalongkorn Univ., Bangkok (Thailand)
  2. Univ. of Illinois at Urbana-Champaign, IL (United States)

Here we report a technique for transferring graphene layers, one by one, from a multilayer deposit formed by epitaxial growth on the Si-terminated face of a 6H-SiC substrate. The procedure uses a bilayer film of palladium/polyimide deposited onto the graphene coated SiC, which is then mechanically peeled away and placed on a target substrate. Orthogonal etching of the palladium and polyimide leaves isolated sheets of graphene with sizes of square centimeters. Repeating these steps transfers additional sheets from the same SiC substrate. Raman spectroscopy, scanning tunneling spectroscopy, low-energy electron diffraction and X-ray photoelectron spectroscopy, together with scanning tunneling, atomic force, optical, and scanning electron microscopy reveal key properties of the materials. The sheet resistances determined from measurements of four point probe devices were found to be ~2 kΩ/square, close to expectation. As a result, graphene crossbar structures fabricated in stacked configurations demonstrate the versatility of the procedures.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-07ER46471; FG02-07ER46453
OSTI ID:
1875530
Journal Information:
ACS Nano, Vol. 4, Issue 10; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Graphene transfer: key for applications journal January 2012
Transfer of wafer-scale graphene onto arbitrary substrates: steps towards the reuse and recycling of the catalyst journal July 2018
Layer-Resolved Graphene Transfer via Engineered Strain Layers journal October 2013
Synthesis of Graphene/Diamond Double-Layered Structure for Improving Electron Field Emission Properties journal May 2016
Materials for stretchable electronics in bioinspired and biointegrated devices journal March 2012
Selective Pick-and-Place of Thin Film by Robotic Micromanipulation journal July 2012
Films of Carbon Nanomaterials for Transparent Conductors journal May 2013