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Tianru Wu, Guqiao Ding, Honglie Shen, Haomin Wang, Lei Sun, Da Jiang, Xiaoming Xie and Mianheng Jiang Triggering the Continuous Growth of Graphene Toward Millimeter-Sized Grains Advanced Functional Materials 23

Version of Record online: 20 AUG 2012 | DOI: 10.1002/adfm.201201577

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The key to synthesizing large graphene grains by ambient pressure chemical vapor deposition (APCVD) is to maintain a low nucleation rate and to provide a continuous drive for graphene growth. An optimized process enables ≈100 nuclei/cm2 on a finely polished and annealed substrate. A continuous increase in carbon supply and flow rate drives the graphene growth to ≈1.2 mm, the largest reported on a Cu substrate.

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