Abstract

Recently, significant studies has been focued on the moiré physics, which has been realized in two different atomically thin monolayer two-dimensional (2D) semiconducting transition metal dichalcogenides. The moiré potential, which is induced by a slightly different lattice constant with tilting angle between two monolayers acts as a periodic trap to confine the optically generated bound electron-hole pair (moiré exciton). The moiré superlattice provides spatially ordered zero-dimensional quantum system ensembles, which has high potential as a platform for many-body physics and design of quantum optics application [1], however, the moiré excitonic state, and dynamics have not bee revealed. In this work, we have investigated the higher moiré exciton state in MoSe₂/WSe₂ heterostructure and clarify the moiré exciton dynamics by static photoluminescence (PL) and time-resolved PL spectroscopy [2].

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