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Near-IR Photoluminescence of Pr/Cu/Sn Tridoped Phosphate Glass: Nonplasmonic Material System Versus Plasmonic Nanocomposite

Journal of Electronic Materials, ISSN: 1543-186X, Vol: 44, Issue: 4, Page: 1175-1180
2015
  • 15
    Citations
  • 0
    Usage
  • 8
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    15
    • Citation Indexes
      15
  • Captures
    8

Article Description

An optical spectroscopy study of PrO, CuO, and SnO tridoped barium phosphate glass prepared by the melt-quenching technique has been carried out, emphasizing near-infrared (IR) emission properties. The material is studied in its nonplasmonic state (as synthesized) and plasmonic form (heat-treated), aiming to elucidate the effects of Cu nanoparticles. The data indicate that Cu ions and Sn centers are stabilized in the melt-quenched glass. Broad ultraviolet excitations of both species can lead to near-IR emission of Pr ions via energy transfer. The plasmonic nanocomposite is produced upon heat treatment as Sn reduces Cu to Cu atoms, ultimately precipitating as Cu nanoparticles sustaining the surface plasmon resonance. Consequently, depletion of primarily Cu modified the ultraviolet excitation properties for the sensitized near-IR Pr emission. Further, suppression of the Pr emission from near-IR emitting states D and G was observed in the Cu nanocomposite in accord with a “plasmonic diluent” role of the nanoparticles.

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