[13p-A37-1~13] 4.6 Nanocarbon and 2D Materials

▲ [13p-A37-10] Modulation of Optical Properties of Monolayer MoSe₂-MoS₂ Hetero-Structures

〇Shinichiro Mouri^1,2、Wenjing Zhang¹、Yuhei Miyauchi¹、Kazunari Matsuda¹ (1.Kyoto Univ.、2.Ritumeikan Univ.)

キーワード：Layered materials, Transition Metal dichalcogenides

We measured PL spectra of 1L-MoS₂/1L-MoSe₂ hetero-structure with changing applied gate voltage and found that inter-layer exciton PL intensity is increased gradually with increasing the negative voltage. In this region, reduction of electron density suppresses the intra-layer trion formation and enhances the photo-carrier separation between layers. As a result, inter-layer excitons are stabilized in such large negative voltage region.