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arXiv 1111.5072cond-mat.mtrl-scicond-mat.mes-hall
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SiO2衬底上大面积气相生长MoS2原子层及其表征

Large Area Vapor Phase Growth and Characterization of MoS2 Atomic Layers on SiO2 Substrate

Yongjie Zhan, Zheng Liu, Sina Najmaei, Pulickel M. Ajayan, Jun Lou

摘要:

单层二硫化钼(MoS2)是一种具有直接带隙的二维晶体,是补充石墨烯的二维纳米电子器件的有前途的候选者。最近已经尝试通过本体材料的化学和机械剥离来生产MoS2层。在这里,我们展示了大面积生长的二硫化钼原子层SiO2衬底上的可扩展的化学气相沉积(CVD)方法。所制备的样品可以容易地用于进一步的器件制造或容易地从SiO2释放并转移到任意衬底。高分辨率透射电子显微镜和拉曼光谱上生长的薄膜的二硫化钼表明,层数范围从单层到几层。我们在电介质上直接生长MoS2层的结果导致了简单的器件制造可能性,这表明在石墨烯之后,有用的2D原子层的扩展集可以可控地合成和操纵,用于许多应用。

英文摘要:

Monolayer Molybdenum disulfide (MoS2), a two-dimensional crystal with a direct bandgap, is a promising candidate for 2D nanoelectronic devices complementing graphene. There have been recent attempts to produce MoS2 layers via chemical and mechanical exfoliation of bulk material. Here we demonstrate the large area growth of MoS2 atomic layers on SiO2 substrates by a scalable chemical vapor deposition (CVD) method. The as-prepared samples can either be readily utilized for further device fabrication or be easily released from SiO2 and transferred to arbitrary substrates. High resolution transmission electron microscopy and Raman spectroscopy on the as grown films of MoS2 indicate that the number of layers range from single layer to a few layers. Our results on the direct growth of MoS2 layers on dielectric leading to facile device fabrication possibilities show the expanding set of useful 2D atomic layers, on the heels of graphene, which can be controllably synthesized and manipulated for many applications.

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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