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General synthesis of two-dimensional van der Waals heterostructure arrays.
Li, Jia; Yang, Xiangdong; Liu, Yang; Huang, Bolong; Wu, Ruixia; Zhang, Zhengwei; Zhao, Bei; Ma, Huifang; Dang, Weiqi; Wei, Zheng; Wang, Kai; Lin, Zhaoyang; Yan, Xingxu; Sun, Mingzi; Li, Bo; Pan, Xiaoqing; Luo, Jun; Zhang, Guangyu; Liu, Yuan; Huang, Yu; Duan, Xidong; Duan, Xiangfeng.
  • Li J; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Yang X; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Liu Y; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Huang B; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China.
  • Wu R; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Zhang Z; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Zhao B; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Ma H; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Dang W; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Wei Z; Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences, Beijing, China.
  • Wang K; Center for Electron Microscopy, Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy, School of Materials, Tianjin University of Technology, Tianjin, China.
  • Lin Z; Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
  • Yan X; Department of Materials Science and Engineering, University of California, Irvine, Irvine, CA, USA.
  • Sun M; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China.
  • Li B; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Pan X; School of Physics and Electronics, Hunan University, Changsha, China.
  • Luo J; Department of Materials Science and Engineering, University of California, Irvine, Irvine, CA, USA.
  • Zhang G; Department of Physics and Astronomy, University of California, Irvine, Irvine, CA, USA.
  • Liu Y; Center for Electron Microscopy, Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy, School of Materials, Tianjin University of Technology, Tianjin, China.
  • Huang Y; Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences, Beijing, China.
  • Duan X; Hunan Key Laboratory of Two-Dimensional Materials, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
  • Duan X; School of Physics and Electronics, Hunan University, Changsha, China.
Nature ; 579(7799): 368-374, 2020 03.
Article en En | MEDLINE | ID: mdl-32188941
ABSTRACT
Two-dimensional van der Waals heterostructures (vdWHs) have attracted considerable interest1-4. However, most vdWHs reported so far  are created by an arduous micromechanical exfoliation and manual restacking process5, which-although versatile for proof-of-concept demonstrations6-16 and fundamental studies17-30-is clearly not scalable for practical technologies. Here we report a general synthetic strategy for two-dimensional vdWH arrays between metallic transition-metal dichalcogenides (m-TMDs) and semiconducting TMDs (s-TMDs). By selectively patterning nucleation sites on monolayer or bilayer s-TMDs, we precisely control the nucleation and growth of diverse m-TMDs with designable periodic arrangements and tunable lateral dimensions at the predesignated spatial locations, producing a series of vdWH arrays, including VSe2/WSe2, NiTe2/WSe2, CoTe2/WSe2, NbTe2/WSe2, VS2/WSe2, VSe2/MoS2 and VSe2/WS2. Systematic scanning transmission electron microscopy studies reveal nearly ideal vdW interfaces with widely tunable moiré superlattices. With the atomically clean vdW interface, we further show that the m-TMDs function as highly reliable synthetic vdW contacts for the underlying WSe2 with excellent device performance and yield, delivering a high ON-current density of up to 900 microamperes per micrometre in bilayer WSe2 transistors. This general synthesis of diverse two-dimensional vdWH arrays provides a versatile material platform for exploring exotic physics and promises a scalable pathway to high-performance devices.
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Texto completo: 1 Banco de datos: MEDLINE Tipo de estudio: Guideline Idioma: En Año: 2020 Tipo del documento: Article
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Tipo de estudio: Guideline Idioma: En Año: 2020 Tipo del documento: Article