Effect of nanopyramid bottom electrodes on bipolar resistive switching phenomena in nickel nitride films-based crossbar arrays

Hee Dong Kim, Min Ju Yun, Seok Man Hong, Tae Geun Kim

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The improved resistive switching (RS) performance characteristics of nickel nitride (NiN) films-based crossbar array (CBA) memory resistors - such as reduction in the operating voltages, reset current and current/voltage variations; no initial forming process; and set/reset speeds - are demonstrated using nanopyramid-patterned (NPP) platinum-bottom electrodes. Compared with a conventional CBA sample with flat-bottom electrodes, both the voltage and the current of the set and reset operations are respectively reduced when NPP samples are used. The drastic reduction in the variation of the operating voltage and current is of particular interest. We explain the RS process using the model of the redox-reaction-mediated formation and rupture of the conducting filaments in the NiN films, based on the capacitance-voltage and conductance-voltage characteristics under different resistance states.

Original languageEnglish
Article number125201
JournalNanotechnology
Volume25
Issue number12
DOIs
Publication statusPublished - 2014 Mar 28

Keywords

  • NiN film
  • crossbar array
  • nanopyramid electrode

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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