[10a-N305-1~10] CS.8 4.5 Nanocarbon and 2D Materials、17 ナノカーボンのコードシェアセッション

▲ [10a-N305-9] Dynamics of Moiré Exciton in MoSe₂-WSe₂ Heterstrosucture

〇(D)Heejun Kim¹、Keisuke Shinokita¹、Wenjin Zhang¹、Kenji Watanabe²、Takashi Taniguchi³、Kazunari Matsuda¹ (1.Institute of Advanced Energy, Kyoto University、2.Research Center for Functional Materials, National Institute for Materials Science、3.International Center for Materials Nanoarchitectonics, National Institute for Materials Science)

キーワード：van der waals heterostructure, moire superlattice, dynamics

Extensive attention has been paid on moiré superlattice, which is composed of two different atomically thin monolayer 2D transition metal dichalcogenides (TMDs) semiconducting materials (MX₂:M=Mo, W, X=S, Se). The fascinating properties from the moiré superlattice leads the formation of a potential by slightly different lattice constant with tilting angle between two layers. This potential acts as a periodic trap for exciton and provides spatially ordered zero-dimensional (0D) quantum dots. In this work, we investigate time-resolved photoluminescence spectroscopy of MoSe₂-WSe₂ heterostructure and clarify the dynamics of ground and excited states of moiré exciton.