1State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
2College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Adv. Mater. Lett., 2019, 10 (5), pp 329-333
DOI: 10.5185/amlett.2019.2281
Publication Date (Web): Jan 14, 2019
Copyright © IAAM-VBRI Press
E-mail: kywang@semi.ac.cn
Two-dimensional (2D) atomic crystals, such as graphene, black phosphorus and transition metal dichalcogenides (TMDCs) are attractive for use in optoelectronic devices, due to their unique optical absorption properties and van der Waals (vdWs) force between layers. Heterostructures based on layered semiconductors provide a new platform for broadband high-performance photodetectors. In this work, graphene-MoTe2-WS2-graphene vdWs heterojunctions are fabricated for photodetection. The fundamental electric properties and the band structures of the heterojunctions are investigated and discussed. The devices show a high responsivity (≈ 140 mA W-1 at 825 nm), stable and broadband photodetection from UV to NIR wavelength range (300 - 1350 nm), fast response time of 186 µs and self-driven photodetectors. The scanning photocurrent microscopy maps are also employed to study the mechanism of photocurrent generation in the heterojunction. Our results reveal that the vdWs heterojunctions with graphene electrodes offer a new route to broadband detection, optical communication and energy harvesting applications.
Ultraviolet, near-infrared, photodetection, van der Waals heterostructure, molybdenum ditelluride, tungsten disulfide.
Trade-off between Safety of Construction Workers and Economy in Backdrop of Covid-19
Recent Applications of Magnesium Oxide (MgO) Nanoparticles in various domains
Influence of Coating Thickness on the Formability of Annealed Aluminum 2024
Nonwovens with and without Super-absorbents Surface Help Firefighters as Additional Active-Cooling to Prevent Heat-Related Deaths
Enhanced Electrochemical Reduction of CO2 by Zeolitic Imidazolate Frameworks-8 Supported Silver Nanoparticles
Effect of Surfactant type on the Characteristics and Bioactivity of Mesoporous Bioactive Glasses
Structure Factor of Charged Microemulsion Nanodroplets Decorated with Telechelic Polymers: Experimental and Numerical Study
The Catalytic Efficiency of Au3+ metal ions and Au NPs on the Oxidation of Carbonyl Compounds by in situ Generated Na2FeO4 under Microwave Irradiation for Industrial Point of View
Synthesis, Functionalized and Characterization of Magnetic Fe3O4 Nanoparticles Protected with MCM-41 Mesoporous
Adaptations and Lessons from COVID-19: A Perspective on How some Industries will be Impacted
Background and Strategies for Identification and Design of Materials for Thermochemical Energy Storage and Conversion
Phosphorus Gasification during the Reduction of basic Oxygen Furnace Slags in a Novel Reactor Concept
Concrete Electrical Resistivity at Varied Water, Chloride Contents and Porosity – Experiment, Modelling & Application
Water Purifying Bio-concrete
Local Fluctuations of Transformation to “Amorphous Diamond” from C60 Fullerenes and Neutron-irradiated Graphite under Shock-compression
Coulomb Drag of Electron-Electron Interactions in GaAs Bilayer with a Non Homogeneous Dielectric Background
Effect of Nd-concentration in Nd(2-x)FexO3 System on the Crystal Structure and Microwave Absorption Characteristics
Experimental Study on Strength Characteristics of Chopped Glass Fiber (CGF) Cement-Mortar Composites
Copyright ©2010-2020 VBRI Press
Full Article