Optical characterization of Ag nanoparticles embedded in aluminophosphate glass

J. A. Jiménez, S. Lysenko, G. Zhang, H. Liu

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

An aluminophosphate glass system containing silver and tin was prepared by the melt-quenching technique in which spherical silver nanoparticles (NPs) of different sizes were embedded upon heat treatment. Optical absorption was used in the assessment of particle growth and for particle size estimation yielding mean radii in the 10-40 nm range. Measurements in the UV region revealed absorption features indicative of the occurrence of silver ions and twofold-coordinated tin centers. Photoluminescence spectroscopy excited at 355 nm showed a broadband emission around 420 nm for the non-heat-treated glass, which shows a thermal quenching effect in temperature dependence measurements. Heat-treated glass shows a dip in the emission spectrum ascribed to absorption by NPs. The luminescence is attributed to single Ag + ions. The nature of the silver emitting states is discussed.

Original languageEnglish (US)
Pages (from-to)812-820
Number of pages9
JournalJournal of Electronic Materials
Volume36
Issue number7
DOIs
StatePublished - Jul 1 2007
Externally publishedYes

Keywords

  • Aluminophosphate glass
  • Photoluminescence (PL)
  • Silver ions
  • Silver nanoparticles (NPs)
  • Surface plasmon resonance
  • Tin

ASJC Scopus subject areas

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

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