Top-gated multifunctional MoS2/silicon-on-insulator heterojunction
Abstract
Van der Waals heterojunctions that combine materials with distinct properties enable the integration of multiple functionalities into a single device. Here, we demonstrate a top-gated n–n MoS2/silicon-on-insulator (SOI) heterojunction that can be configured into several operational modes: a thin-silicon channel transistor electrostatically modulated by a MoS2 secondary gate; a silicon channel phototransistor with a high responsivity of 64.1 A/W and a specific detectivity of 6.56 × 1012 Jones; an integrated diode-transistor showing a rectifying ratio approaching 104 and an on–off ratio up to 9600; and a self-powered photodiode featuring a fast response speed (rise/fall time of 3.2/3.6 μs). These results establish a pathway toward multifunctional electronic and optoelectronic integration using a simple commercial SOI platform.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (11)
Liqiang Chen
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Boyuan Di
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Yijia Jiang
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Yuxiang Wang
Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials
Shiwan Zou
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Jintian Li
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Ziyi Dong
Yuanbo Xie
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology 1 , Wuhan 430074,
Haixin Chang
Youwei Zhang
Wenfeng Zhang