title: Substrate Facet Effect on the Growth of Monolayer MoS2 on Au Foils.
abstract: MoS2 on polycrystalline metal substrates emerges as an intriguing growth system compared to that on insulating substrates due to its direct application as an electrocatalyst in hydrogen evolution. However, the growth is still indistinct with regard to the effects of the inevitably evolved facets. Herein, we demonstrate for the first time that the crystallography of Au foil substrates can mediate a strong effect on the growth of monolayer MoS2, where large-domain single-crystal MoS2 triangles are more preferentially evolved on Au(100) and Au(110) facets than on Au(111) at relative high growth temperatures (>680 °C). Intriguingly, this substrate effect can be weakened at a low growth temperature (∼530 °C), reflected with uniform distributions of domain size and nucleation density among the different facets. The preferential nucleation and growth on some specific Au facets are explained from the facet-dependent binding energy of MoS2 according to density functional theory calculations. In brief, this work should shed light on the effect of substrate crystallography on the synthesis of monolayer MoS2, thus paving the way for achieving batch-produced, large-domain or domain size-tunable growth through an appropriate selection of the growth substrate.
authors: †Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.|‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Jianping
authors: J
authors: Shi
authors: §Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, People's Republic of China.
authors: Xiaona
authors: X
authors: Zhang
authors: ‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Donglin
authors: D
authors: Ma
authors: ⊥International Center for Quantum Design of Functional Materials (ICQD), Hefei National Laboratory for Physical Sciences at the Microscale (HFNL), University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.|∥Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.|¶Beijing Computational Science Research Center, Beijing, 100084, People's Republic of China.
authors: Jianbao
authors: J
authors: Zhu
authors: †Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.|‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Yu
authors: Y
authors: Zhang
authors: §Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, People's Republic of China.
authors: Zhenxi
authors: Z
authors: Guo
authors: ⊥International Center for Quantum Design of Functional Materials (ICQD), Hefei National Laboratory for Physical Sciences at the Microscale (HFNL), University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.|∥Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
authors: Yu
authors: Y
authors: Yao
authors: ‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Qingqing
authors: Q
authors: Ji
authors: ‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Xiuju
authors: X
authors: Song
authors: †Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.|‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Yanshuo
authors: Y
authors: Zhang
authors: †Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.|‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Cong
authors: C
authors: Li
authors: ‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Zhongfan
authors: Z
authors: Liu
authors: ⊥International Center for Quantum Design of Functional Materials (ICQD), Hefei National Laboratory for Physical Sciences at the Microscale (HFNL), University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.|∥Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.|¥Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
authors: Wenguang
authors: W
authors: Zhu
authors: †Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People's Republic of China.|‡Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
authors: Yanfeng
authors: Y
authors: Zhang
keywords: chemical vapor deposition; electron backscatter diffraction; molybdenum disulfide; substrate crystallography