The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

CS Code-sharing session » 【CS.4】 Code-sharing Session of 4.5 & 17

[8a-Z23-1~10] 【CS.4】 Code-sharing Session of 4.5 & 17

Tue. Sep 8, 2020 9:00 AM - 12:30 PM Z23

Kazunari Matsuda(Kyoto Univ.)

12:15 PM - 12:30 PM

[8a-Z23-10] Chemically brightened and highly valley polarized trions in monolayer MoS2

Wenjin Zhang1, Kenya Tanaka1, Yusuke Hasegawa1, Keisuke Shinokita1, Kazunari Matsuda1, Yuhei Miyauchi1 (1.Kyoto University)

Keywords:transition metal dichalcogenides, MoS2, PL

Monolayer (1L) transition metal dichalcogenides (TMDs) MX2, where M and X are a transition metal and a chalcogen, respectively, are attractive for exploiting valleytronics or optovalleytronics in fast and energy-saving information processing applications. Their valley polarized excitons or charged excitons (trions) are candidates as information carriers [1-5] in optovalleytronics. Trions, which are three-body charged excitonic bound states of electrons and holes, are expected to exhibit a much longer valley lifetime compared to excitons. However, the relatively weak PL of trions prohibits the realistic application of trions in these materials.