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 journalArticlepeer-review

17 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+–Ag0 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+–Ag0 plasmon resonance energy transfer.
Original languageAmerican English
JournalJournal of Electronic Materials
Volume2010
DOIs
StatePublished - Jan 2010

Disciplines

  • Physical Sciences and Mathematics

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