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Youpin Gong, Xuemin Zhang, Guangtong Liu, Liqiong Wu, Xiumei Geng, Mingsheng Long, Xiaohui Cao, Yufen Guo, Weiwei Li, Jianbao Xu, Mengtao Sun, Li Lu and Liwei Liu Layer-Controlled and Wafer-Scale Synthesis of Uniform and High-Quality Graphene Films on a Polycrystalline Nickel Catalyst Advanced Functional Materials 22

Article first published online: 24 APR 2012 | DOI: 10.1002/adfm.201200388

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The layer-controlled synthesis of uniform and high-quality graphene films is a challenging task. A novel and viable synthesis of layer-controlled high-quality graphene films on a wafer-scale Ni surface by the sequentially separated steps of gas carburization, hydrogen exposure, and segregation at ambient pressure is developed. The hydrogen exposure plays a critical role in promoting the preferential segregation through reducing carbon content in the Ni.

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