Visualizing fast growth of large single-crystalline graphene by tunable isotopic carbon source

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• 作者：Luzhao Sun ; Li Lin ; Jincan Zhang ; Huan Wang ; Hailin Peng ; Zhongfan Liu
• 关键词：large single ; crystalline graphene ; fast growth ; isotope labelling ; carbon source
• 刊名：Nano Research
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：10
• 期：2
• 页码：355-363
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nanotechnology; Materials Science, general; Atomic/Molecular Structure and Spectra; Condensed Matter Physics; Biotechnology; Biomedicine, general;
• 出版者：Tsinghua University Press
• ISSN：1998-0000
• 卷排序：10

文摘

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 single-crystalline 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.