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High-throughput Synthesis of Solution-Processable van der Waals Heterostructures through Electrochemistry |
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| Authors: | Dr Huanhuan Shi Prof Mengmeng Li Shuai Fu Dr Christof Neumann Dr Xiaodong Li Dr Wenhui Niu Yunji Lee Prof Mischa Bonn Dr Hai I Wang Prof Andrey Turchanin Dr Ali Shaygan Nia Dr Sheng Yang Prof Xinliang Feng |
| Institution: | 1. Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062 Dresden, Germany
These authors contributed equally to this work.;2. Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, 100029 Beijing, China University of Chinese Academy of Sciences, 100049 Beijing, China These authors contributed equally to this work.;3. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany These authors contributed equally to this work.;4. Institute of Physical Chemistry and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Lessingstrasse 10, 07743 Jena, Germany;5. Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062 Dresden, Germany Max Planck Institute for microstructure physics, Weinberg 2, 06120 Halle, Germany;6. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany;7. Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062 Dresden, Germany;8. Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China |
| Abstract: | Two-dimensional van der Waals heterostructures (2D vdWHs) have recently gained widespread attention because of their abundant and exotic properties, which open up many new possibilities for next-generation nanoelectronics. However, practical applications remain challenging due to the lack of high-throughput techniques for fabricating high-quality vdWHs. Here, we demonstrate a general electrochemical strategy to prepare solution-processable high-quality vdWHs, in which electrostatic forces drive the stacking of electrochemically exfoliated individual assemblies with intact structures and clean interfaces into vdWHs with strong interlayer interactions. Thanks to the excellent combination of strong light absorption, interfacial charge transfer, and decent charge transport properties in individual layers, thin-film photodetectors based on graphene/In2Se3 vdWHs exhibit great promise for near-infrared (NIR) photodetection, owing to a high responsivity (267 mA W?1), fast rise (72 ms) and decay (426 ms) times under NIR illumination. This approach enables various hybrid systems, including graphene/In2Se3, graphene/MoS2 and graphene/MoSe2 vdWHs, providing a broad avenue for exploring emerging electronic, photonic, and exotic quantum phenomena. |
| Keywords: | 2D Semiconductors Electrochemical Synthesis NIR Photodetectors Solution Processability Van Der Waals Heterostructures |