Role of Nanoelectromechanical Switching in the Operation of Nanostructured Bi2Se3 Interlayers between Conductive Electrodes

Jelena Kosmaca, Jana Andzane, Margarita Baitimirova, Floriana Lombardi, Donats Erts (Corresponding Author)

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We demonstrate a simple low-cost method of preparation of layered devices for opto- and thermoelectric applications. The devices consist of a functional Bi2Se3 layer of randomly oriented nanoplates and flexible nanobelts enclosed between two flat indium tin oxide (ITO) electrodes. The number of functional interconnections between the ITO electrodes and correspondingly the efficiency of the device can be increased by gradual nanoelectromechanical (NEM) switching of flexible individual Bi2Se3 nanobelts in the circuit. NEM switching is achieved through applying an external voltage to the device. For the first time, we investigate in situ NEM switching and breakdown parameters of Bi2Se3 nanobelts, visualize the processes occurring in the device under the influence of applied external voltage, and establish the limitations to the possible operational conditions.

Original languageEnglish
Pages (from-to)12257-12262
Number of pages6
JournalACS Applied Materials and Interfaces
Volume8
Issue number19
DOIs
Publication statusPublished - 18 May 2016
Externally publishedYes

Keywords*

  • bismuth selenide
  • nanobelts
  • nanoelectromechanical switching
  • nanostructured interlayers
  • sandwich device

Field of Science*

  • 1.3 Physical sciences
  • 2.5 Materials engineering

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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