[15a-D311-1~12] 6.3 Oxide electronics

[15a-D311-2] High performance electric double layer transistors using solvate ionic liquids

〇Shimpei Ono¹, Satoshi Saito², Ryota Tamate², Kazumoto Miwa¹, Sunao Shimizu¹, Tatsuhiro Horii², Masayoshi Watanabe² (1.CRIEPI, 2.Yokohama National Univ.)

Keywords:Ionic liquid gating

We report electrochemical properties of a Li⁺-based solvate ionic liquid (SIL) and its application to gate dielectrics for electric double layer transistors (EDLTs). It is found that the electric double layer capacitance of the SIL increases with strengthening the negative polarization of the working electrode due to the possible desolvation of the cations in the SIL. The transfer characteristics of a SrTiO₃-based EDLT show a dramatic improvement when the SIL is used for the gate dielectric. The present result proposes a guideline to high performance gate dielectrics for EDLTs, leading to the development of iontoronics research with semiconductor devices.