Flame-annealing assisted synthesis of graphene films from adamantane
Flame-annealing assisted synthesis of graphene films from adamantane
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DOI：
10.1039/c2jm32493h
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发表时间：
2012-07
影响因子：
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通讯作者：
R. N. Tiwari;M. Ishihara;J. Tiwari;M. Yoshimura
中科院分区：
文献类型：
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作者：
R. N. Tiwari;M. Ishihara;J. Tiwari;M. Yoshimura
在这里，我们展示了一种简单的方法，从纳米多孔碳(NC)材料直接在多晶金属箔上生长均匀和大面积的单层石墨烯。采用金刚烷(C10H16)火焰法合成了纳米碳管。金刚烷的火焰退火导致金刚烷转化为NC。纳米粒子的大小为∼80~100 nm。制备的夹心结构(Mo-NC-Ni-介电-Mo)以NC为碳源材料，在850~950°C温度下进行热处理。成功地将纳米材料转化为单层石墨烯。我们探索了用我们的方法在低真空(1×10−10Pa.)空气中而不是惰性Ar气氛中生长石墨烯的可能性。对夹层结构产生的压力提高了石墨烯的密度/可伸缩性以及质量。我们观察到石墨烯的方阻为∼929Ω/sq，透明度为91.8%。我们的工作拓展了从各种碳源材料合成单层石墨烯的可能性。此外，合成的石墨烯薄膜还可以应用于未来的电子应用。
Here we demonstrate a facile approach to grow uniform and large area single layer graphene directly over polycrystalline metal foil from nanoporous carbon (NC) material. The NC is synthesized by using the adamantane (C10H16) flame method. The flame-annealing of adamantane resulted in the conversion of adamantane to NC. The size of NC is ∼80 to 100 nm. The prepared sandwich structures (Mo–NC–Ni–dielectric–Mo) were annealed at 850 to 950 °C, where NC was used as a carbon source material. The NC material was successfully transformed into single layer graphene. We have explored the possibility of using our approach to grow graphene in low vacuum (1 × 10−10 Pa) air instead of inert Ar atmosphere. The generated pressure on sandwich structures has enhanced the density/scalability as well as the quality of graphene. We observed the sheet resistance of graphene was ∼929 Ω per sq at 91.8% transparency. Our work expands the possibility of synthesizing single-layer graphene from various carbon source materials. Moreover, the synthesized graphene films can be applied for future electronics applications.