Robust memristors based on layered two-dimensional materials

Miao Wang, Songhua Cai, Xiaoqing Pan, Chenyu Wang, Xiaojuan Lian, Ye Zhuo, Kang Xu, Tianjun Cao, Xiaoqing Pan, Baigeng Wang, Shi Jun Liang, J. Joshua Yang, Peng Wang, Feng Miao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

223 Citations (Scopus)

Abstract

Van der Waals heterostructures are formed by stacking layers of different two-dimensional materials and offer the possibility to design new materials with atomic-level precision. By combining the valuable properties of different 2D systems, such heterostructures could potentially be used to address existing challenges in the development of electronic devices, particularly those that require vertical multi-layered structures. Here we show that robust memristors with good thermal stability, which is lacking in traditional memristors, can be created from a van der Waals heterostructure composed of graphene/MoS2-x O x /graphene. The devices exhibit excellent switching performance with an endurance of up to 107 and a high operating temperature of up to 340 °C. With the help of in situ electron microscopy, we show that the thermal stability is due to the MoS2-x O x switching layer, as well as the graphene electrodes and the atomically sharp interface between the electrodes and the switching layer. We also show that the devices have a well-defined conduction channel and a switching mechanism that is based on the migration of oxygen ions. Finally, we demonstrate that the memristor devices can be fabricated on a polyimide substrate and exhibit good endurance against over 1,000 bending cycles, illustrating their potential for flexible electronic applications.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalNature Electronics
Volume1
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Electrical and Electronic Engineering

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