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中国物理学会期刊

六方氮化硼表面石墨烯纳米带生长与物性研究

Synthesis and characterization of graphene nanoribbons on hexagonal boron nitride

CSTR: 32037.14.aps.68.20191036
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  • 石墨烯作为二维原子晶体家族的典型代表, 由于其优异的物理与化学特性而受到学术界与工业界的广泛关注. 石墨烯纳米带是宽度仅有几纳米到几十纳米的石墨烯. 纳米带不但继承了石墨烯大部分优异的性能, 而且具备可调控带隙、自旋极化边界态等石墨烯所不具有的新奇物理特性. 这些特性使石墨烯纳米带成为未来探索石墨烯电子学应用所需要重点研究的对象. 利用与石墨烯晶格结构相似的六方氮化硼(h-BN)作为绝缘介质衬底进行石墨烯及石墨烯纳米带制备, 不仅可以有效地保持它们优异的本征性质, 还可以开发出与主流半导体工艺相兼容的电子器件工艺与应用. 本文回顾了近几年h-BN表面石墨烯及石墨烯纳米带研究的发展历程, 详细阐述了最近的材料制备和物性研究的进展, 并对高质量h-BN衬底制备的最新进展进行介绍, 以期为未来实现高质量h-BN表面石墨烯纳米带的规模化制备并最终实现电子器件应用奠定基础. 最后本文对h-BN表面石墨烯及石墨烯纳米带的未来研究方向进行了展望.

     

    Graphene, as a typical representative of the two-dimensional material family, has received a wide attention due to its excellent physical and chemical properties. Graphene nanoribbon (GNR) is graphene in a width of several to a few tens of nanometers. GNRs not only inherit most of the excellent properties of graphene, but also have their own specific properties such as band gap opening and spin-polarized edge states, which make it the potential candidate in graphene based electronics in the future. Hexagonal boron nitride (h-BN), which has similar lattice constant with graphene, normally serves as an ideal substrate for graphene and GNRs. It can not only effectively preserve their intrinsic properties, but also benefit for the fabrication of electrical devices via popular semiconductor processes. In this paper, we reviewed the development history of research of graphene and GNRs on h-BN in recent years. The recent progress of physical properties is also discussed. In order to realize the large scale production of graphene and GNRs on h-BN, high quality h-BN multilayer is necessary. In addition, recent progresses about h-BN preparation methods are presented, and the progresses could pave the way for the further application of GNRs in the electronics. Finally, the research direction of graphene and GNRs on h-BN in the future is discussed.

     

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