Persistent charge storage and memory operation of top-gate transistors solely based on two-dimensional molybdenum disulfide

Po Cheng Tsai, Coung Ru Yan, Shoou Jinn Chang, Shu Wei Chang, Shih Yen Lin

Research output: Contribution to journalArticlepeer-review

Abstract

We fabricate top-gate transistors on the three-layer molybdenum disulfide (MoS2) with three, two, and one layers in the source and drain regions using atomic layer etching (ALE). In the presence of ALE, the device at zero gate voltage can exhibit high and low levels of drain current under the forward and reverse gate bias, respectively. The hysteresis loop on the transfer curve of transistor indicates that two distinct charge states exist in the device within a range of gate bias. A long retention time of the charge is observed. Unlike conventional semiconductor memories with transistors and capacitors, the two-dimensional (2D) material itself plays two parts in the current conduction and charge storage. The persistent charge storage and memory operation of the multilayer MoS2 transistors with thicknesses of a few atomic layer will further expand the device application of 2D materials with reduced linewidths.

Original languageEnglish
Article number305701
JournalNanotechnology
Volume34
Issue number30
DOIs
Publication statusPublished - 2023 Jul 23

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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