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最新Science石墨烯：Wafer-Scale Growth of Single-Crystal Monolayer Graphene ……
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Science在4月3日在线出版了Jae-Hyun Lee等人在Ge表面制备大尺寸单晶石墨烯的论文“Wafer-Scale Growth of Single-Crystal Monolayer Graphene on Reusable Hydrogen-Terminated Germanium”。 The uniform growth of single-crystal graphene over wafer-scale areas remains a challenge in the commercial-level manufacturability of various electronic, photonic, mechanical, and other devices based on graphene. Here, we describe wafer-scale growth of wrinkle-free single-crystal monolayer graphene on silicon wafer using a hydrogen-terminated germanium buffer layer. The anisotropic twofold symmetry of the germanium (110) surface allowed unidirectional alignment of multiple seeds, which were merged to uniform single-crystal graphene with predefined orientation. Furthermore, the weak interaction between graphene and underlying hydrogen-terminated germanium surface enabled the facile etch-free dry transfer of graphene and the recycling of the germanium substrate for continual graphene growth. |
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2014-04-04 20:53:42, 2.77 M
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2014-04-04 21:04
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2014-04-04 21:45
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2014-04-05 01:13
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2014-04-05 02:27
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2014-04-05 08:53
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2014-04-05 09:24
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2014-04-05 12:02
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