[16p-F203-1~15] 17.3 Layered materials

[16p-F203-4] Characterization of twin boundary of CVD-grown MoS₂

〇Yusuke Kureishi¹, Mitsuhiro Okada¹, Shoji Yoshida², Kenji Watanabe³, Takashi Taniguchi³, Hidemi Shigekawa², Hisanori Shinohara¹, Ryo Kitaura¹ (1.Nagoya Univ., 2.Tsukuba Univ., 3.National Institute for Materials Science)

Keywords:transition metal dichalcogenides, MoS2, layered materials

MoS₂ have been attracting intense research interests. CVD-grown samples of MoS₂, which are used in various experiments, have grain boundaries, which can alter their physical properties. In this work, we have focused on preparation of monolayer MoS₂ crystals on hexagonal boron nitride and graphite substrate, which sample have two different types of the boundary structure. Interaction between MoS₂ and substrates plays an important role in realizing the boundary structure. PL imaging have shown that the two different boundaries shows different contrast in images, which indicates difference in structure significantly alter the local electronic structure of the boundaries.