scholarly journals Spectral Monitoring CH/C2Ratio of Methane Plasma for Growing Single-Layer Graphene on Cu

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Shih-Hao Chan ◽  
Shih-Fang Liao ◽  
Hung-Pin Chen ◽  
Hung-Sen Wei ◽  
Sheng-Hui Chen ◽  
...  
Keyword(s):  
Single Layer ◽  
Emission Spectra ◽  
Chemical Vapor ◽  
Active Species ◽  
Single Layer Graphene ◽  
Plasma Power ◽  
Layer Graphene ◽  
Graphene Synthesis ◽  
Initial Stage ◽  
Flowing Hydrogen

Single-layer graphene was grown on copper at a low temperature of 600°C by plasma-assisted thermal chemical vapor deposition. Its growth mechanism was discussed with reference to the emission spectra of the plasma. The methane plasma produces the active species (Hx, CHx, and Cx) without the addition of flowing hydrogen, and the amounts of hydrogen-containing species can be controlled by varying the plasma power. The effective distance was found between the plasma initial stage and the deposition stage for the single-layer graphene synthesis. The results reveal that high-quality graphene can be synthesized using methane plasma at a suitable plasma power.

scholarly journals Influence of Different Copper Treatment on the Formation of Single-Layer Graphene by CVD Method

2020 ◽  
Vol 4 (1) ◽  
pp. 14
Author(s):  
Ivan Kondrashov ◽  
Maxim Komlenok ◽  
Pavel Pivovarov ◽  
Sergei Savin ◽  
Elena Obraztsova ◽  
...  
Keyword(s):  
Copper Foil ◽  
Single Layer ◽  
Chemical Vapor ◽  
Copper Surface ◽  
Single Layer Graphene ◽  
Graphene Layers ◽  
Layer Graphene ◽  
Graphene Synthesis ◽  
Number Of Layers ◽  
Optimized Conditions

Chemical vapor deposition synthesis of graphene on copper foil from methane is the most promising technology for industrial production. However, an important problem of the formation of the second and subsequent graphene layers during synthesis arises due to the strong roughness of the initial copper foil. Here we demonstrate the various approaches to prepare a smooth copper surface before graphene synthesis to reduce the formation of multi-layer graphene islands. Six methods of surface processing of copper foils are studied, and the decrease of the roughness from 250 to as low as 80 nm is achieved. The correlation between roughness and the formation of multi-layer graphene is demonstrated. Under optimized conditions of surface treatment, the content of the multi-layer graphene islands drops from 9% to 2.1%. The quality and the number of layers of synthesized graphene are analyzed by Raman spectroscopy, scanning electron microscopy, and measurements of charge mobility.

scholarly journals Preparation of Copper Surface for the Synthesis of Single-Layer Graphene

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1071
Author(s):  
Ivan Kondrashov ◽  
Maxim Komlenok ◽  
Pavel Pivovarov ◽  
Sergey Savin ◽  
Elena Obraztsova ◽  
...  
Keyword(s):  
Copper Foil ◽  
Single Layer ◽  
Chemical Vapor ◽  
Copper Surface ◽  
Single Layer Graphene ◽  
Graphene Layers ◽  
Layer Graphene ◽  
Additional Layer ◽  
Graphene Synthesis ◽  
Few Layer Graphene

Chemical vapor deposition synthesis of graphene on copper foil from methane is the most promising technology for industrial production. However, an important problem of the formation of the additional graphene layers during synthesis arises due to the strong roughness of the initial copper foil. In this paper, various approaches are demonstrated to form a smooth copper surface before graphene synthesis to reduce the amount of few layer graphene islands. Six methods of surface processing of copper foils are studied and the decrease of the roughness from 250 to as low as 80 nm is achieved. The correlation between foil roughness and the formation of the additional layer is demonstrated. Under optimized conditions of surface treatment, the content of the additional graphene layer drops from 9 to 2.1%. The quality and the number of layers of synthesized graphene are analyzed by Raman spectroscopy, scanning electron microscopy and measurements of charge mobility.

scholarly journals Single-Layer Graphene Synthesis on a Al2O3(0001)/Cu(111) Template Using Chemical Vapor Deposition

2016 ◽  
Vol 5 (11) ◽  
pp. Q3060-Q3066 ◽  
Author(s):  
Ken Verguts ◽  
Nandi Vrancken ◽  
Bart François Vermeulen ◽  
Cedric Huyghebaert ◽  
Herman Terryn ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Graphene Synthesis

scholarly journals Methane as an effective hydrogen source for single-layer graphene synthesis on Cu foil by plasma enhanced chemical vapor deposition

Nanoscale ◽  
2013 ◽  
Vol 5 (3) ◽  
pp. 1221 ◽  
Author(s):  
Yong Seung Kim ◽  
Jae Hong Lee ◽  
Young Duck Kim ◽  
Sahng-Kyoon Jerng ◽  
Kisu Joo ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Graphene Synthesis ◽  
Cu Foil ◽  
Effective Hydrogen

Epitaxial Chemical Vapor Deposition Growth of Single-Layer Graphene over Cobalt Film Crystallized on Sapphire

ACS Nano ◽  
2010 ◽  
Vol 4 (12) ◽  
pp. 7407-7414 ◽  
Author(s):  
Hiroki Ago ◽  
Yoshito Ito ◽  
Noriaki Mizuta ◽  
Kazuma Yoshida ◽  
Baoshan Hu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Single Layer Graphene ◽  
Chemical Vapor Deposition Growth ◽  
Cobalt Film ◽  
Layer Graphene

Performance of single layer graphene obtain by chemical vapor deposition on gold electrodes

2019 ◽  
Vol 98 ◽  
pp. 107510 ◽  
Author(s):  
Bianca Tincu ◽  
Ioana Demetrescu ◽  
Andrei Avram ◽  
Vasilica Tucureanu ◽  
Alina Matei ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Single Layer Graphene ◽  
Gold Electrodes ◽  
Layer Graphene

Oxidation of CVD Growth Single-Layer Graphene

2013 ◽  
Vol 790 ◽  
pp. 7-10 ◽  
Author(s):  
Hui Gao ◽  
Yin Zhang
Keyword(s):  
Vapor Deposition ◽  
Acid Treatment ◽  
Oxidation Process ◽  
Single Layer ◽  
Chemical Vapor ◽  
Strong Acid ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Potential Applications ◽  
Cvd Growth

Recently, oxidized chemical vapor deposition (CVD) growth graphene has drawn much attention due to its potential applications in the field of optoelectronics. In this article, we report a simple, scalable and efficient method to synthesize oxidized CVD growth single-layer graphene by the strong acid treatment. The results indicate that oxidation process successfully introduced more defects and oxygen-containing groups into the lattice of graphene.

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