[22a-E203-1~11] 17.3 Layered materials

△ [22a-E203-10] Optical properties due to a few moiré excitons in nanofabricated MoSe₂/WSe₂ heterobilayers

〇Yuki Okamura¹, Keisuke Shinokita¹, Kenji Watanabe², Takashi Taniguchi², Kazunari Matsuda¹ (1.IAE, Kyoto Univ., 2.NIMS)

Keywords:Atomically thin material, moire exciton, heterostructure

In this study, we observed PL signal from a few moiré excitons in a narrower region than the diffraction-limited region in nanofabricated MoSe₂/WSe₂ heterobilayers with a focused ion beam (FIB). The broad emission from a large number of inhomogeneous distributed moiré excitons was observed in the non-FIB processed region, while only sharp emission peaks from a small number of moiré excitons could be observed in the FIB processed region.