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arXiv 1812.04540cond-mat.mtrl-sci
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序贯化学气相沉积法在铂表面制备石墨烯双层膜

Preparation of graphene bilayers on platinum by sequential chemical vapour deposition

Johannes Halle, Alexander Mehler, Nicolas Néel, Jörg Kröger

摘要:

介绍了一种廉价而灵活的方法,该方法能够通过顺序化学气相沉积在Pt(111)上外延生长双层石墨烯。两个堆叠的石墨烯片的延伸区域通过首先乙烯的热分解和随后的石墨烯的形成来获得。在第二步骤中,足够厚的Pt膜掩埋第一石墨烯层,并充当用于在第三步骤中制造第二石墨烯层的平台。然后,最终退火过程导致第一石墨烯片扩散到表面,直到完成与第二片的双层堆叠。扫描隧道显微镜揭示了双层石墨烯的成功生长,并阐明了莫尔图案的起源。

英文摘要:

A cheap and flexible method is introduced that enables the epitaxial growth of bilayer graphene on Pt(111) by sequential chemical vapour deposition. Extended regions of two stacked graphene sheets are obtained by, first, the thermal decomposition of ethylene and the subsequent formation of graphene. In the second step, a sufficiently thick Pt film buries the first graphene layer and acts as a platform for the fabrication of the second graphene layer in the third step. A final annealing process then leads to the diffusion of the first graphene sheet to the surface until the bilayer stacking with the second sheet is accomplished. Scanning tunnelling microscopy unravels the successful growth of bilayer graphene and elucidates the origin of moiré patterns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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