Kinetics of Ag nanoparticle growth in thick SiO 2 films: An in situ optical assessment of Ostwald ripening

J. A. Jiménez, M. Sendova

Research output: Contribution to journalArticle

Abstract

Significant progress in understanding physico-chemical changes of noble metal species embedded in dielectrics can be achieved from the real-time monitoring of material optical properties during processing. In this work, in situ optical microspectroscopy is employed in a real-time assessment of the kinetics of Ag nanoparticle (NP) growth in the Ostwald ripening stage for NPs embedded in thick SiO 2 films on soda glass, heat-treated in air atmosphere. The remarkable plasmonic evolution allows for following the variation in NP size in the framework of Mie extinction and crystal growth theories. An Arrhenius-type analysis yields an activation energy of 1.8 eV in association to aforementioned regime of NP growth. The data is discussed in the context of the atmosphere/film/substrate physico-chemical interactions alongside with previously reported results obtained by the proposed novel application of in situ optical microspectroscopy.

Original languageEnglish (US)
Pages (from-to)282-286
Number of pages5
JournalMaterials Chemistry and Physics
Volume135
Issue number2-3
DOIs
StatePublished - Aug 15 2012
Externally publishedYes

Fingerprint

Ostwald ripening
Nanoparticles
nanoparticles
Kinetics
kinetics
atmospheres
Precious metals
Crystallization
noble metals
Crystal growth
crystal growth
extinction
Optical properties
Activation energy
Association reactions
activation energy
optical properties
Glass
heat
Monitoring

Keywords

  • Crystal growth
  • Nanostructures
  • Optical materials
  • Transport properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kinetics of Ag nanoparticle growth in thick SiO 2 films : An in situ optical assessment of Ostwald ripening. / Jiménez, J. A.; Sendova, M.

In: Materials Chemistry and Physics, Vol. 135, No. 2-3, 15.08.2012, p. 282-286.

Research output: Contribution to journalArticle

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