Interfacial effects in the relaxation dynamics of silver nanometal-glass composites probed by transient grating spectroscopy

J. A. Jiménez, S. Lysenko, V. S. Vikhnin, H. Liu

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Relaxation dynamics of silver nanoparticles (NPs) embedded in glass have been studied by picosecond time-resolved transient grating (TG) spectroscopy. Phosphate-based glasses were prepared by melting and heat-treatment processes by which two different nanometal-glass composites were produced. The first is a glass system containing silver and tin in which Ag NPs are embedded in the matrix upon heat treatment. The second is a heat-treated silver-doped glass with spectroscopic indications of Ag +-Ag 0 pairs located at or near the surface of the NPs. The time evolution of the light-induced TG for the Ag/Sn-doped glass shows an uncommon relaxation on the nanosecond time scale. Such behavior is explained in terms of energy transfer processes between polaronic and/or excitonic states in the near-interface region of the glass matrix and the NPs. In contrast, a faster monotonic relaxation is observed for the Ag-doped nanocomposite. This result is attributed to Ag NP → Ag +-Ag 0 plasmon resonance energy transfer.

Original languageEnglish (US)
Pages (from-to)138-143
Number of pages6
JournalJournal of Electronic Materials
Volume39
Issue number1
DOIs
StatePublished - Jan 1 2010
Externally publishedYes

Keywords

  • Energy transfer
  • Nanoparticles
  • Phosphate glass
  • Silver

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Interfacial effects in the relaxation dynamics of silver nanometal-glass composites probed by transient grating spectroscopy'. Together they form a unique fingerprint.

  • Cite this