Visualizing fast growth of large single-crystalline graphene by tunable isotopic carbon source
large single-crystalline graphene, fast growth, isotope labelling, carbon source
ABSTRACT The fast growth of large single-crystalline graphene by chemical vapor deposition on Cu foil remains a challenge for industrial-scale applications. To achieve the fast growth of large single-crystalline graphene, understanding the detailed dynamics governing the entire growth process—including nucleation, growth, and coalescence—is important; however, these remain unexplored. In this study, by using a pulsed carbon isotope labeling technique in conjunction with micro-Raman spectroscopy identification, we visualized the growth dynamics, such as nucleation, growth, and coalescence, during the fast growth of large singlecrystalline graphene domains. By tuning the supply of the carbon source, a growth rate of 320 μm/min and the growth of centimeter-sized graphene single crystals were achieved on Cu foil.
Tsinghua University Press
Luzhao Sun,Li Lin,Jincan Zhang,Huan Wang,Hailin Peng,Zhongfan Liu, Visualizing fast growth of large single-crystalline graphene by tunable isotopic carbon source. NanoRes.2017, 10(2): 355–363