[11p-Z29-1~16] 17.3 Layered materials

[11p-Z29-6] Observation of Electronic State Change due to Molecular Adsorption on MoS₂ Surface using Ultraviolet Photoelectron Spectroscopy

〇Hiroki Waizumi¹, Yudai Tanaka¹, Kousei Takahashi¹, Md Iftekharul Alam¹, Muhammad Shamim Al Mamun¹, Tsuyoshi Takaoka², Tadahiro Komeda² (1.Tohoku Univ., 2.IMRAM, Tohoku Univ.)

Keywords:Transition Metal Dichalcogenide, Photoelectron Spectroscopy, Surface Chemistry

At the previous autumn lecture, we reported that the electrical properties change when TCNQ and F4-TCNQ are adsorbed on the surface of MoS₂-FET. As a proof of this experimental result, we decided to observe from the viewpoint of ultraviolet photoemission spectroscopy (UPS). In this presentation, we will compare the changes in the UPS spectra obtained in this experiment with the changes in the previously reported electrical characteristics, and try to make progress in consideration.