Imaging electroluminescence from individual nanoparticles in an array exhibiting room temperature single electron effect

Jason Kee Yang Ong, Chieu Van Nguyen, Sena Sayood, Ravi F. Saraf

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Electroluminescence (EL) from the monolayer of a network of a one-dimensional (1D) necklace of 10 nm Au particles (nano)cemented by CdS is imaged. The EL and photoluminescence (PL) spectra confirm the emission from CdS. The EL emission blinks and is highly specular. The position of the speckles from individual CdS cement sites is independent of magnitude and polarity of the applied bias. The EL is explained by field-assisted ionization of the cement due to high internal fields in the array caused by stationary local charging that also leads to robust single electron effect at room temperature.

Original languageEnglish (US)
Pages (from-to)7403-7410
Number of pages8
JournalACS Nano
Volume7
Issue number8
DOIs
StatePublished - Aug 27 2013

Keywords

  • Coulomb blockade
  • electroluminescence
  • field-assisted ionization
  • nanoparticles
  • one-dimensional nanoparticle arrays
  • single electron effect

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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