[19a-311-1~12] 17.3 Layered materials

[19a-311-7] Substrate effect in molybdenum disulfide(MoS₂) and its optical response

〇Yousuke Uchiyama¹, Kana Kojima², Kenji Watanabe³, Takashi Taniguchi³, Yasumitsu Miyata², Hisanori Shinohara¹, Ryo Kitaura¹ (1.Nagoya Univ., 2.Tokyo Metro. Univ., 3.National Institute for Materials Science)

Keywords:Molybdenum disulfide, Optical property, Substrate effect

Substrates can have a large effect on the physical properties of two-dimensional materials because almost all of their atoms are exposed to its surface. Therefore hexagonal boron nitride(hBN) that has an atomically flat surface is widely used as the ideal substrate that brings out the intrinsic properties of two-dimensional materials. Although two-dimensional materials sitting on hBN are considered to be in the condition like suspended samples in vacuum, this consideration is still not validated in detail. In this study, we have examined the effect of hBN on two-dimensional materials through the optical response of monolayer molybdenum disulfide.