High-throughput Synthesis of Solution-Processable van der Waals Heterostructures through Electrochemistry

Huanhuan Shi; Mengmeng Li; Shuai Fu; Christof Neumann; Xiaodong Li; Wenhui Niu; Yunji Lee; Mischa Bonn; Hai I Wang; Andrey Turchanin; Ali Shaygan Nia; Sheng Yang; Xinliang Feng

doi:10.1002/anie.202303929

High-throughput Synthesis of Solution-Processable van der Waals Heterostructures through Electrochemistry

Angew Chem Int Ed Engl. 2023 Jul 10;62(28):e202303929. doi: 10.1002/anie.202303929. Epub 2023 Jun 6.

Authors

Huanhuan Shi¹, Mengmeng Li^{2

3}, Shuai Fu⁴, Christof Neumann⁵, Xiaodong Li^{1

6}, Wenhui Niu^{1

6}, Yunji Lee⁴, Mischa Bonn⁴, Hai I Wang⁴, Andrey Turchanin⁵, Ali Shaygan Nia^{1

6}, Sheng Yang⁷, Xinliang Feng^{1

6}

Affiliations

¹ Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstrasse 4, 01062, Dresden, Germany.
² Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, 100029, Beijing, China.
³ University of Chinese Academy of Sciences, 100049, Beijing, China.
⁴ Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
⁵ Institute of Physical Chemistry and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Lessingstrasse 10, 07743, Jena, Germany.
⁶ Max Planck Institute for microstructure physics, Weinberg 2, 06120, Halle, Germany.
⁷ Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China.

PMID: 37163208
DOI: 10.1002/anie.202303929

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/In₂ Se₃ 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/In₂ Se₃ , 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.

Abstract

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