Triggering the Continuous Growth of Graphene Toward Millimeter‐Sized Grains
By Tianru Wu, Guqiao Ding, Honglie Shen, Haomin Wang, Lei Sun, D. Jiang, Xiaoming Xie, M. Jiang. 2012
133 citations recorded by the source corpus.
A simple but efficient strategy to synthesize millimeter‐sized graphene single crystal grains by regulating the supply of reactants in the chemical vapor deposition (CVD) process is demonstrated. Polystyrene is used as a carbon source. Pulse heating on the carbon source is utilized to minimize the nucleation density of graphene on copper foil, while a gradual increase in the temperature of the carbon source and the flow rate of hydrogen is adapted to drive the continuous growth of the graphene grains. As a result, the nucleation density of graphene grain can be controlled to as low as ≈100 nuclei/cm2, and a single crystal grain can grow up to dimensions of ≈1.2 mm. Raman spectroscopy, transmission electron microscopy (TEM), and electrical‐transport measurements show that the graphene grains obtained are of high quality. The strategy presented provides very good controllability and enables the possibility of large graphene single crystals, which is of vital importance for practical applications.
Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/27ab98ae467d449110e8b0f983329e0ba96d9550
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In Electrical and Electronic Engineering
In Materials Chemistry
Citations in the corpus
- Synthesis of graphene crystals from solid waste plastic by chemical vapor deposition (2014, methodology): “[27] Wu T, Ding G, Shen H, Wang H, Sun L, Jiang D et al.”
- Graphene Nucleation Density on Copper: Fundamental Role of Background Pressure (2013, background): “For example, large grains were grown on catalysts with negligible carbon solubility such as copper,[8-13] as well as, on those with larger carbon solubility such as platinum [14] using both the low and atmospheric pressure CVD processes.”