Luminescence of silver molecular clusters in photo-thermo-refractive glasses

Dubrovin, Victor; Ignatiev, Alexander; Никоноров, Н. В.; Сидоров, А. И.; Shakhverdov, T. A.; Agafonova, D. S.

doi:10.1016/j.optmat.2013.11.018

Cited by 96 publications

(42 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2) can be observed, and it is therefore present as individual ions or small clusters. These are known to be luminescent, and fluorescent silver nanoclusters stabilized in different scaffolds were reviewed by Díez and Ras [20], while Dubrovin et al [21] considered the many Ag-related species that may occur in photo-thermo-refractive glasses. The optical properties of these luminescent species are dependent on their environment and may therefore vary significantly.…”

Section: Methodsmentioning

confidence: 99%

White luminescence from sol–gel silica doped with silver

Abbass

Swart

Kroon

2015

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

Undoped silica and Ag-doped silica (SiO 2 ) were synthesized by the sol-gel method. The photoluminescence properties as a function of annealing temperature were investigated in detail. The addition of Ag introduced new optical active centres in the sample annealed at 1000°C, responsible for emission bands at 2.25 eV (550 nm) and 3.26 eV (380 nm) in the SiO 2 luminescence spectrum. These new emission bands were related to excess oxygen due to decomposition of Ag 2 O at high temperatures. The additional luminescence band at 2.25 eV changed the blue emission from pure SiO 2 to near white light from Ag-doped SiO 2 , suggesting that the SiO 2 :Ag system may be suitable for solidstate lighting applications. The stability of this phosphor under ultraviolet irradiation was investigated. Graphical Abstract

show abstract

Section: Methodsmentioning

confidence: 99%

White luminescence from sol–gel silica doped with silver

Abbass

Swart

Kroon

2015

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

show abstract

“…Indeed, the presence of metallic silver nanoclusters in a glass containing rare earth centers have been demonstrated to enhance their optical properties, with application for example in optical amplifiers technology. In particular, field-enhancement effects and energy-transfer mechanisms between Ag clusters and rare earth ions are at the basis of the enhanced luminescence performances [71][72]. Again, silver offers several degrees of freedom in the tailoring of the optical response of this class of materials, being the various sensitizing features anyhow related to the presence in the glass of several different forms of silver, ranging from Ag pairs to nanosized aggregates [73].…”

Section: Properties Of Silver-doped Glassesmentioning

confidence: 99%

Silver doping of glasses

Gonella

2015

Ceramics International

View full text Add to dashboard Cite

“…A large variety of glasses have been developed with luminescent centers in the form of molecular clusters (MCs) of silver, [13][14][15][16][17][18][19][20] MCs of copper compounds, [21][22][23][24] and MCs and quantum dots of cadmium and lead chalcogenides. [25][26][27][28] Silicate glasses with neutral silver MCs were chosen from this variety for this paper, since they are optimal in the following parameters: High chemical stability of the glass matrix, high (20-60%) quantum yield 29 of the luminescence of the silver MCs, and spectral coincidence of the luminescence band of the silver MCs with the spectral-sensitivity band of silicon photodiodes.…”

Section: Experimental Techniquementioning

confidence: 99%

Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium

2015

View full text Add to dashboard Cite

The experimental results presented here show that the use of luminescent multimode fibers in sensors of the refractive index of the ambient medium makes it possible to substantially increase their sensitivity to variation of the medium's refractive index. Experiments have been carried out with fibers made from silicate glass containing luminescent centers in the form of neutral molecular clusters of silver. The sensitivity is increased because more high-order modes are excited when the fiber captures the radiation of luminescent centers in the fiber than when the waveguide modes are excited through the ends of the fiber. The results of numerical modelling show that the sensitivity is appreciably increased for modes with index N ≥ 100.

show abstract

Luminescence of silver molecular clusters in photo-thermo-refractive glasses

Cited by 96 publications

References 35 publications

White luminescence from sol–gel silica doped with silver

White luminescence from sol–gel silica doped with silver

Silver doping of glasses

Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium

Contact Info

Product

Resources

About