The effect of pressure on morphological features and quality of synthesized graphene

The effect of pressure on morphological features and quality of synthesized graphene Graphene was grown on copper foils using a low pressure chemical vapor deposition technique. In this experiment the pressure varied from 0.1 to 4 Torr, the time was maintained at 150 s, the temperature was kept at 1000 °C, and the flow rate of hydrogen and methane was 10 and 30 sccm, respectively. To characterize the graphene layer formed on the copper foil, Raman spectra and SEM were analyzed. From the Raman spectra of samples, the ratio of I D/I G increases and the grain size of synthesized graphene samples decreases with rising pressure of the reaction chamber. The effect of low pressure on the density is clearly obvious since the ratio of I D/I G is less than 0.2. A lower value showed fewer defects. For the first time, MountainsMap Premium and Gwyddion software were used to investigate the morphological characteristics and quality of graphene samples. The results suggest that the density of graphene particles on the surface rises with rising pressure. It can be concluded that the density, uniformity, and the grain size of the synthesized graphene are controlled by changing the pressure of the reaction chamber. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

The effect of pressure on morphological features and quality of synthesized graphene

Loading next page...
 
/lp/springer_journal/the-effect-of-pressure-on-morphological-features-and-quality-of-mdNYY6weA9
Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2594-8
Publisher site
See Article on Publisher Site

Abstract

Graphene was grown on copper foils using a low pressure chemical vapor deposition technique. In this experiment the pressure varied from 0.1 to 4 Torr, the time was maintained at 150 s, the temperature was kept at 1000 °C, and the flow rate of hydrogen and methane was 10 and 30 sccm, respectively. To characterize the graphene layer formed on the copper foil, Raman spectra and SEM were analyzed. From the Raman spectra of samples, the ratio of I D/I G increases and the grain size of synthesized graphene samples decreases with rising pressure of the reaction chamber. The effect of low pressure on the density is clearly obvious since the ratio of I D/I G is less than 0.2. A lower value showed fewer defects. For the first time, MountainsMap Premium and Gwyddion software were used to investigate the morphological characteristics and quality of graphene samples. The results suggest that the density of graphene particles on the surface rises with rising pressure. It can be concluded that the density, uniformity, and the grain size of the synthesized graphene are controlled by changing the pressure of the reaction chamber.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 11, 2016

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off