Author:
Han Sha,Xia Cai-Juan,Li Min,Zhao Xu-Mei,Zhang Guo-Qing,Li Lian-Bi,Su Yao-Heng,Fang Qing-Long
Abstract
AbstractIn recent years, the two-dimensional (2D) semiconductor α-In2Se3 has great potential for applications in the fields of electronics and optoelectronics due to its spontaneous iron electrolysis properties. Through ab initio electronic structure calculations and quantum transport simulations, the interface properties and transport properties of α-In2Se3/Au contacts with different polarization directions are studied, and a two-dimensional α-In2Se3 asymmetric metal contact design is proposed. When α-In2Se3 is polarized upward, it forms an n-type Schottky contact with Au. While when α-In2Se3 is polarized downward, it forms a p-type Schottky contact with Au. More importantly, significant rectification effect is found in the asymmetric Au/α-In2Se3/Au field-effect transistor. The carrier transports under positive and negative bias voltages are found to be dominated by thermionic excitation and tunneling, respectively. These findings provide guidance for the further design of 2D α-In2Se3-based transistors.
Funder
Project of Xi’an Science and Technology Bureau
Doctoral Program of Xi'an Polytechnic University
Scientific Research Program Funded by Shaanxi Provincial Education Department
Publisher
Springer Science and Business Media LLC
Cited by
2 articles.
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