[11p-Z29-1~16] 17.3 層状物質

▲ [11p-Z29-7] Microfluidic Tank Engineering and Functionalization of Two Dimensional MoS₂ by Nicotine

〇(DC)MuhammadShamimAl Mamun¹、Yudai Tanaka¹、Hiroki Waizumi¹、Tsuyoshi Takaoka²、Zhipeng Wang¹、Md Iftekharul Alam¹、Atsushi Ando³、Tadahiro Komeda² (1.Tohoku University、2.IMRAM, Tohoku Univ.、3.AIST, Tsukuba, Japan)

キーワード：Nicotine, Microfluidic tank, n-doping

For the Incorporation of MoS₂ into logical applications, it is obligatory to functionalize it with the chemical moieties. To avoid the effect of solvent and dopant on the electrode we set up a microfluidic tank over the MoS₂ channel. Here we report the tailoring of electrical properties of mechanically exfoliated MoS₂ by nicotine. Raman spectroscopy and electrical charge transport measurement revealed that nicotine imposes n-doping in MoS₂. The threshold voltage forwarded left side, indicating n-type doping effect. Nicotine functionalization tailored the field effect mobility by a factor of ~ 3.6 without deteriorating the electrical properties of MoS₂ devices. XPS analysis reveals the up shift of Fermi level of MoS₂ towards conduction bands after nicotine functionalization.