Impact Factor5.1

DOI number:10.1016/j.diamond.2024.111684

Affiliation of Author(s):西北大学电子信息学院

Teaching and Research Group:电子科学与技术系

Journal:Diamond and Related Materials

Place of Publication:Netheland

Funded by:国际科技合作项目

Key Words:Vector network analyzer; Millimeter-wave terahertz; Optical modulators; Device measurement; Simulation and modeling

Abstract:Graphene has great application potential in the field of electromagnetic modulation field because of its excellent physical and electronic properties. Studies have demonstrated that the properties of graphene films with different layers are also different due to the difference in energy band structure. Nowadays, the modulation mechanism of monolayer graphene (MLG) and bilayer graphene (BLG) has been gradually discovered, but for graphene with more than three layers, the mechanism of whether it is tunable remains to be explored, especially on the proving from an experimental perspective. In this study, the CVD-prepared highly homogeneous few-layer graphene (FLG) film was combined with SiO2 nanolayers and P-doped Si substrate to form an MIS-like capacitor structure, a unique electromagnetic behavior of mutant amplitude modulation exhibited by FLG film was found, which was different from that of mono- and bi-layers of graphene. The results show that the structure exhibits obvious modulation behavior in the ultra-wideband frequency of 500–750 GHz and the bias of 0.9 V, up to 3.1 dB. This study makes a new supplement to a gap in the EM modulation system of graphene series material.

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Electronic Science and Techonology

Document Type:J

Issue:150

Page Number:111684

Translation or Not:no

Date of Publication:2024-12-14

Included Journals:SCI

Links to published journals:https://www.sciencedirect.com/science/article/abs/pii/S0925963524008975?via%3Dihub

First Author:Cheng Chen

Correspondence Author:Jixin Wang

Correspondence Author:Yang Dai

All the Authors:Boyuan Gao

All the Authors:Jiaxuan Xue

All the Authors:Zhihao Li

All the Authors:Zhiyong Zhang

All the Authors:Wu Zhao

All the Authors:Johan Stiens