Electrical Characteristics of Hybrid-Organic Memory Devices Based on Au Nanoparticles

Razan R. Nejm, Ahmad I. Ayesh, Dagou A. Zeze, Adam Sleiman, Mohammed F. Mabrook, Amal Al-Ghaferi, Mousa Hussein

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We report on the fabrication and characterization of hybrid-organic memory devices based on gold (Au) nanoparticles that utilize metal–insulator–semiconductor structure. Au nanoparticles were produced by sputtering and inert-gas condensation inside an ultrahigh-vacuum compatible system. The nanoparticles were self-assembled on a silicon dioxide (SiO2)/silicon (Si) substrate, then coated with a poly(methyl methacrylate) (PMMA) insulating layer. Aluminum (Al) electrodes were deposited by thermal evaporation on the Si substrate and the PMMA layer to create a capacitor. The nanoparticles worked as charge storage elements, while the PMMA is the capacitor insulator. The capacitance–voltage (C–V) characteristics of the fabricated devices showed a clockwise hysteresis with a memory window of 3.4 V, indicative of electron injection from the top Al electrode through the PMMA layer into Au nanoparticles. Charge retention was measured at the stress voltage, demonstrating that the devices retain 94% of the charge stored after 3 h of continuous testing.

Original languageEnglish
Pages (from-to)2835-2841
Number of pages7
JournalJournal of Electronic Materials
Volume44
Issue number8
DOIs
Publication statusPublished - Aug 1 2015

Keywords

  • Au
  • Organic memory devices
  • nanoparticles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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