title: Electrostatically Reversible Polarity of Ambipolar α-MoTe2 Transistors.
abstract: A doping-free transistor made of ambipolar α-phase molybdenum ditelluride (α-MoTe2) is proposed in which the transistor polarity (p-type and n-type) is electrostatically controlled by dual top gates. The voltage signal in one of the gates determines the transistor polarity, while the other gate modulates the drain current. We demonstrate the transistor operation experimentally, with electrostatically controlled polarity of both p- and n-type in a single transistor.
authors.affiliation: †WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Shu
authors.initials: S
authors.lastname: Nakaharai
authors.affiliation: †WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Mahito
authors.initials: M
authors.lastname: Yamamoto
authors.affiliation: ‡Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.
authors.forename: Keiji
authors.initials: K
authors.lastname: Ueno
authors.affiliation: †WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.|§Department of Physics, National Chung Hsing University, Taichung 40227, Taiwan.
authors.forename: Yen-Fu
authors.initials: YF
authors.lastname: Lin
authors.affiliation: †WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Song-Lin
authors.initials: SL
authors.lastname: Li
authors.affiliation: †WPI Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Tsukagoshi
keywords: ambipolar; field-effect transistor; molybdenum ditelluride; polarity control; transition metal dichalcogenide