Formation of luminescent and nonluminescent silver nanoparticles in silicate glasses by near-infrared femtosecond laser pulses and subsequent thermal treatment: the role of halogenides

Klyukin, Dmitry; Dubrovin, Victor; Pshenova, Alisa; Putilin, S. É.; Shakhverdov, T. A.; Tsypkin, A. N.; Никоноров, Н. В.; Сидоров, А. И.

doi:10.1117/1.oe.55.6.067101

Cited by 20 publications

(3 citation statements)

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“…At low ion fluencies, when the concentration of ions in the matrix is insignificant, these ions combine sub-nanoscale molecular charged clusters (MCs) consisting of n ions (atoms) Ag(n+), here n = 3-6. Under excitation, these clusters produce a luminescent band with peak at 460 nm wavelength and short decay times [9]. The intensity of this band is comparable with intensity of luminescence bands emitted by F 2 and F 3 colour centers resulting from the silver ion exposure of the matrix.…”

Section: Methodsmentioning

confidence: 69%

Luminescent centers in nanolayers of LiF crystals with embedded silver ions

Шипилова

Dresvyansky

Мартынович

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. The paper presents the results of studies of luminescent centers induced by irradiation of LiF crystals with flow of silver ions of a fluence varying in a range of 2×10 13 -5×10 17 ions/cm 2 and energy about of 150 keV. Two bands with maxima at 250 nm and 420 nm in the absorption spectra of the exposed crystals were observed. The former was due to the absorption of F colour centers and the latter consisted of F 2 (F 3 + ) colour centers band and a plasmon resonance band arose due to the embedded silver ions. The peak of the latter remained stable after annealing the sample at 400 0 C unlike the colour centers bands. The luminescence spectra of the crystals under excitation with a laser irradiation of 375 nm wavelength showed a band with a peak at 450 nm along with the bands with peaks at 530 and 680 nm corresponding to F 3 + and F 2 colour centers, respectively. The peak of the former reached saturation, while the peaks of the colour centers bands increased with ion fluence increasing. These results show that subnanometre sized metal clusters Ag(n+) (n=3-6) are responsible for the observed luminescence, while the Ag particles of a nanometer scale are not luminescent.

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Section: Methodsmentioning

confidence: 69%

Luminescent centers in nanolayers of LiF crystals with embedded silver ions

Шипилова

Dresvyansky

Мартынович

et al. 2017

J. Phys.: Conf. Ser.

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“…At the same time, the band around 350 nm could be attributed to color centers due to the lattice defects or impurities in PTR glass that can capture the free electrons and holes. Therefore, the obvious decrease in the transmittance in the UV and visible range indicates the generation of color centers and SMCs [30]. After heat treatment, a noticeable reduction in the transmittance in the 350 nm-600 nm range, the absorption at 450 nm was caused by the formation of Ag NPs [31] due to their surface plasmon resonance [31].…”

Section: The Transmission and Absorption Spectra Analysismentioning

confidence: 99%

Effects of CeO2 and Sb2O3 on the Nonlinear Photochemical Process in Ultrashort Laser Gaussian—Bessel Beams Irradiated Photo—Thermo—Refractive Glass

Wang

Zhang

et al. 2021

Micromachines

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Microfluidic chips and optical elements can be fabricated based on the nonlinear photosensitivity in photo–thermo–refractive (PTR) glass by controlling the growth of nanocrystals in the femtosecond (fs) laser–irradiated region. Here, we focus on CeO2 and Sb2O3 that play important roles in UV irradiation, experimentally investigate the effects of the dopants on the nonlinear photochemical process in PTR glass triggered by fs Gaussian–Bessel beams. The results show that the generation of Ag0 atoms and the Ag nanoparticles can be improved by CeO2 and Sb2O3 co–doping. Besides, each multivalent ion in PTR glass possibly participates in the electron transfer processes and contributes to the generation of Ag0 atoms. Finally, X–ray diffraction analysis reveals the precipitation of NaF nanocrystals with an average size of 10 to 12 nm after laser irradiation and thermal treatment, which is unrelated to the dopants.

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“…Their observation correlates with the presence of a long wavelength tail of the cerium absorption band, as discussed earlier. Similarly, multi-photon ionization of the PTR glass matrix was shown to be possible using a weakly focused femtosecond laser with central wavelength anywhere between 800 and 1500 nm and a peak intensity of 10 13 W/cm 2 [88,89]. Mechanisms of this non-linear interaction were studied in detail using the Franz Keldysh theory [88] and apparently result from a complex interaction combining multi-photon and tunneling ionization.…”

Section: The Photoinduced Processmentioning

confidence: 99%

A review of the photo-thermal mechanism and crystallization of photo-thermo-refractive (PTR) glass

Lumeau

Zanotto

2016

International Materials Reviews

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International audiencePhoto-thermo-refractive (PTR) glass is an optically transparent photosensitive multicomponent silicate glass. UV-exposure produces silver nanoclusters, and NaF nanocrystals upon heating, giving rise to permanent refractive index changes. This is the basis for the production ofBragg gratings. In this article, we present a comprehensive overview of the photo-thermoinduced effects in PTR glass. We first give a general introduction of PTR glasses and their applications. Then, we perform a thorough analysis of the mechanisms of refractive index changes starting with the photo-induced process followed by the crystal nucleation mechanism and NaF crystallisation kinetics. Finally, we concentrate on the PTR glassnanostructure and its effect on the crystallisation mechanisms and properties, finishing with the kinetics and origin of the refractive index change. Despite the fact that much is known about this septuagenarian glass and that it is already being commercially produced, a number of open problems still exist that warrant further investigation

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Formation of luminescent and nonluminescent silver nanoparticles in silicate glasses by near-infrared femtosecond laser pulses and subsequent thermal treatment: the role of halogenides

Cited by 20 publications

References 0 publications

Luminescent centers in nanolayers of LiF crystals with embedded silver ions

Luminescent centers in nanolayers of LiF crystals with embedded silver ions

Effects of CeO2 and Sb2O3 on the Nonlinear Photochemical Process in Ultrashort Laser Gaussian—Bessel Beams Irradiated Photo—Thermo—Refractive Glass

A review of the photo-thermal mechanism and crystallization of photo-thermo-refractive (PTR) glass

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