Fully reproducible, lowerature synthesis of high-quality, few-layer graphene on nickel via preheating of gas precursors using atmospheric pressure chemical vapor deposition

Miriam Somekh, Efrat Shawat, Gilbert D. Nessim

Research output: Contribution to journalArticlepeer-review

Abstract

By preheating the precursor gases (ethylene and hydrogen), we synthesized high-quality, few-layer graphene at reduced temperatures with full reproducibility on nickel thin films. Raman spectroscopy showed that the graphene films synthesized using gas preheating exhibited 50% less defects compared to those obtained without gas preheating. All experiments performed using gas preheating were fully reproducible, while less than 15% of the experiments performed without gas preheating led to graphene of only acceptable quality. Gas chromatography/mass spectrometry (GC-MS) of the preheated gases showed an increased formation of polycyclic aromatic hydrocarbons (PAHs). From these results, we postulated a new growth mechanism that fits previous density functional theory (DFT) reports of hydrocarbon stability on a nickel surface. The results presented are an important step in the direction of graphene synthesis at lower temperatures with full reproducibility.

Original languageEnglish
Pages (from-to)19750-19758
Number of pages9
JournalJournal of Materials Chemistry A
Volume2
Issue number46
DOIs
StatePublished - 14 Dec 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Renewable Energy, Sustainability and the Environment

Fingerprint

Dive into the research topics of 'Fully reproducible, lowerature synthesis of high-quality, few-layer graphene on nickel via preheating of gas precursors using atmospheric pressure chemical vapor deposition'. Together they form a unique fingerprint.

Cite this