Electrically tunable physical properties of two-dimensional materials. (August 2019)

• Record Type: Journal Article
• Authors: Chen, Xiaolong; Zhou, Zishu; Deng, Bingchen; Wu, Zefei; Xia, Fengnian; Cao, Yi; Zhang, Le; Huang, Wei; Wang, Ning; Wang, Lin
• Is Part Of: Nano today. Volume 27(2019)
• Page Start: 99
• Page End: 119
• Publication Date: 2019-08
• Subjects: Two-dimensional material -- Electrically tunable property -- Electro-matter interaction; Nanotechnology -- Periodicals; Nanosciences -- Périodiques; 620.505
• DOI: 10.1016/j.nantod.2019.05.005
• Languages: English
• ISSNs: 1748-0132

Abstract

Graphical abstract: The atomically thin nature of two-dimensional (2D) materials allows the sufficient interactions between 2D materials and electric fields, enabling rich electrically tunable physical properties and novel device applications. Highlights: Two-dimensional (2D) materials possess rich electrically tunable electronic, optical, and magnetic properties. Electrically tunable bandgap, valley valve, and excitons are reviewed in bilayer graphene. Electrically tunable bandgap, photodetector, and optical modulator are reviewed in black phosphorus. Electrically tunable transport, valley, and ferroelectric properties are reviewed in transition metal dichalcogenides. Electrically tunable magnetic properties are reviewed in emerging magnetic materials, including CrI3, Gr2 Ge2 Te6, and Fe3 GeTe2 . Abstract: Two-dimensional (2D) materials, with atomically thin van der Waals layered structure, exhibit both novel physical properties and promising applications in electronic, optoelectronic and energy-harvesting devices. Currently 2D material research has become one of the most exciting topics in physics, engineering and material communities due to the easy preparation processes, rich species and unique properties. Among all the unique properties of 2D materials, the ability to electrically tune the electronic, optical and even magnetic properties at a mild electrostatic doping offers us numerous possibilities for investigating electro-matter interactions and novel device applications. Here, we review the electrically tunable physical properties of several interesting 2D materials as well as the relevant applications on devices utilizing these unique properties. The electrically tunable valley properties of 2D materials and the recent discovered 2D magnetism are also included.