摘要
以石墨烯为代表的二维材料具有新颖的物理特性和潜在的应用前景.但石墨烯的零带隙限制了它在半导体器件中的应用,寻找新的半导体型替代材料成为当前的一个研究热点.作为黑磷的单层,磷烯具有褶皱状蜂窝结构.它具有可调直接带隙、高载流子迁移率和面内各向异性等独特的性质,引起了人们的广泛关注.磷烯的发现开辟了Ⅴ族二维单层材料的研究领域.本文首先着重介绍具有黑磷结构的五种单元素二维材料(氮、磷、砷、锑和铋)的结构、合成和物理性质.其次,讨论了一些类黑磷结构的二元二维材料,包括Ⅳ-Ⅵ族化合物、Ⅴ-Ⅴ族化合物.这些材料具有独特的晶体对称性,通过改变结构以及维度可以实现对性质的调控.最后指出了一些当前需要解决的问题,并对这些二维半导体材料未来可能的应用前景进行了展望.
Graphene, as the representative of two-dimensional materials, has varous novel physical properties and potential applications. The intrinsic zero band gap of graphene limits its application in semiconductor devices,and thus the search for new semiconducting alternative materials has become a current research hotspot.Phosphorene is the monolayer of black phosphorus and has a puckered honeycomb structure. Its advanced properties, such as adjustable direct band gap, high carrier mobility and in-plane anisotropy and so on, have recently aroused great research interest, thus opening up the research field of puckered honeycomb monolayers in group V elements. In this article, we first focus on the structure, synthesis and physical properties of five single-element two-dimensional materials(nitrogen, phosphorus, arsenic, antimony and bismuth) each with puckered honeycomb structure. Second, some binary two-dimensional materials with puckered honeycomb structure are discussed, including Ⅳ-Ⅵ and Ⅴ-Ⅴ compounds. These materials have their own unique crystal symmetry, and the properties can be controlled by changing their structures and dimensions. Finally, we also make a summary on some current challenges that need to be solved, and the possible future applications of these two-dimensional materials are also presented.
作者
孟雨欣
赵漪凡
李绍春
Meng Yu-Xin;Zhao Yi-Fan;Li Shao-Chun(National Laboratory of Solid State Microstructures,School of Physics,Nanjing University,Nanjing 210093,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2021年第14期299-316,共18页
Acta Physica Sinica
基金
国家自然科学基金(批准号:11774149,11790311)资助的课题.
关键词
Ⅴ族元素
褶皱蜂窝状结构
二维材料
group Ⅴ elements
puckered honeycomb
two-dimensional materials
