Influence of reducing agent concentration on the luminescence and photophysical processes constant rates of silver clusters in silica-based glass

Mironov, L. Yu.; Marasanov, Dmitriy V.; Sgibnev, Yevgeniy; Sannikova, None; Kulpina, Ekaterina; Kolesnikov, Ilya E.

doi:10.1016/j.jlumin.2023.119918

Cited by 2 publications

(1 citation statement)

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“…Comparison of the short-lived emission spectra of Ag.05 and Ag.01 shows that the fluorescence of Ag.05 was wider and tailed more to the longer wavelength region (Figure 2d). The combination of fluorescence and phosphorescence with emission in blue and green-yellow parts of the spectra is a characteristic feature of the luminescence of silver clusters in the studied glass matrix [24,37]. Additionally, we observed a decrease in the fluorescence lifetime to 16.9 ns, which may originate from the contribution of silver clusters, since the fluorescence lifetime of silver clusters in the studied glass varies from 3.2 to 4.5 ns.…”

Section: Resultssupporting

confidence: 52%

Formation and Photophysical Properties of Silver Clusters in Bulk of Photo-Thermo-Refractive Glass

Mironov,

Marasanov,

Sannikova

et al. 2023

Ceramics

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The bright luminescence of silver clusters in glass have potential applications in solid-state lighting, optical memory, and spectral converters. In this work, luminescent silver clusters were formed in the bulk of photo-thermo-refractive glass (15Na2O-5ZnO-2.9Al2O3-70.3SiO2-6.5F, mol.%) doped with different Ag2O concentrations from 0.01 to 0.05 mol.%. The spontaneous formation of plasmonic nanoparticles during glass synthesis was observed at 0.05 mol.% of Ag2O in the glass composition, limiting the silver concentration range for cluster formation. The luminescence of silver clusters was characterized by steady-state and time-resolved spectroscopy techniques. The rate constants of fluorescence, phosphorescence, intersystem crossing, and nonradiative deactivation were estimated on the basis of an experimental study. A comparison of the results obtained for the photophysical properties of luminescent silver clusters formed in the ion-exchanged layers of photo-thermo-refractive glass is provided.

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Section: Resultssupporting

confidence: 52%