Recent advances in free-standing two-dimensional crystals with atomic thickness: design, assembly and transfer strategies.
Recent advances in free-standing two-dimensional crystals with atomic thickness: design, assembly and transfer strategies.
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DOI：
10.1039/c3cs60138b
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发表时间：
2013-10
影响因子：
46.2
通讯作者：
Xiaodong Zhang;Yi Xie
中科院分区：
文献类型：
--
作者：
Xiaodong Zhang;Yi Xie
具有原子厚度的自支撑二维晶体由于其新颖的电学、光学、力学和生物相容性等特性而受到广泛关注，近年来对原子厚度二维晶体的研究主要集中在层间存在弱货车德瓦尔斯力的层状材料上。由于缺乏可执行的合成策略，制备具有非层状结构或准层状结构且层间键合相对较强的原子级厚度的二维晶体仍然是一个巨大的挑战。本文主要介绍了非层状结构和层间键合较强的准层状结构的原子厚度二维晶体的合成策略的最新进展。此外，还讨论了二维晶体电子结构的调制方法沿着二维晶体的组装和转移技术。介绍了每种策略在制备、电子结构调控、组装和转移过程中的关键技术。
Free-standing two-dimensional (2D) crystals with atomic thickness have attracted extensive attention because of their novel electronic, optical, mechanical and biocompatible properties, and so on. In recent years, the study of atomically thick 2D crystals has mainly focused on the layered materials with weak van der Waals forces between the layers. For the lack of executable synthetic strategies, preparation of atomically thick 2D crystals with a nonlayered structure or quasi-layered structure with relatively strong bonds between the layers is still a great challenge. This review mainly focuses on recent advances in synthetic strategies for atomically thick 2D crystals with a nonlayered structure as well as the quasi-layered structure with relatively strong bonds between the layers. Furthermore, methods for the modulation of the electronic structures of 2D crystals along with assembly and transfer techniques of the 2D crystals are discussed. The key points of each strategy in preparation, electronic structure modulation, assembly and transfer processes are also presented.