Two-dimensional hexagonal semiconductors beyond graphene

The rapid and successful development of the research on graphene and graphene-based nanostructures has been substantially enlarged to include many other two-dimensional hexagonal semiconductors (THS): phosphorene, silicene, germanene, hexagonal boron nitride (h-BN) and transition metal dichalcogenides (TMDCs) such as MoS2, MoSe2, WS2, WSe2 as well as the van der Waals heterostructures of various THSs (including graphene). The present article is a review of recent works on THSs beyond graphene and van der Waals heterostructures composed of different pairs of all THSs. One among the priorities of new THSs compared to graphene is the presence of a non-vanishing energy bandgap which opened up the ability to fabricate a large number of electronic, optoelectronic and photonic devices on the basis of these new materials and their van der Waals heterostructures. Moreover, a significant progress in the research on TMDCs was the discovery of valley degree of freedom. The results of research on valley degree of freedom and the development of a new technology based on valley degree of freedom-valleytronics are also presented. Thus the scientific contents of the basic research and practical applications os THSs are very rich and extremely promising.

Title:

	Two-dimensional hexagonal semiconductors beyond graphene
Authors:	Nguyen, B.H. Nguyen, V.H.
Keywords:	Graphene Phosphorene Silicene Transition metal dichalcogemides van der Waals heterostructures
Issue Date:	2016
Publisher:	Institute of Physics Publishing
Citation:	Scopus
Abstract:	The rapid and successful development of the research on graphene and graphene-based nanostructures has been substantially enlarged to include many other two-dimensional hexagonal semiconductors (THS): phosphorene, silicene, germanene, hexagonal boron nitride (h-BN) and transition metal dichalcogenides (TMDCs) such as MoS2, MoSe2, WS2, WSe2 as well as the van der Waals heterostructures of various THSs (including graphene). The present article is a review of recent works on THSs beyond graphene and van der Waals heterostructures composed of different pairs of all THSs. One among the priorities of new THSs compared to graphene is the presence of a non-vanishing energy bandgap which opened up the ability to fabricate a large number of electronic, optoelectronic and photonic devices on the basis of these new materials and their van der Waals heterostructures. Moreover, a significant progress in the research on TMDCs was the discovery of valley degree of freedom. The results of research on valley degree of freedom and the development of a new technology based on valley degree of freedom-valleytronics are also presented. Thus the scientific contents of the basic research and practical applications os THSs are very rich and extremely promising.
Description:	Advances in Natural Sciences: Nanoscience and Nanotechnology Volume 7, Issue 4, December 2016, Article number 043001
URI:	http://iopscience.iop.org/article/10.1088/2043-6262/7/4/043001/meta;jsessionid=7D4BF8DAD276BC8CC4675F747037DE05.ip-10-40-1-105 http://repository.vnu.edu.vn/handle/VNU_123/34082
ISSN:	20436262
Appears in Collections:	Bài báo của ĐHQGHN trong Scopus