Influence of UV irradiation and heat treatment on the luminescence of molecular silver clusters in photo-thermo-refractive glasses

Ignat’ev, A. I.; Никоноров, Н. В.; Сидоров, А. И.; Shakhverdov, T. A.

doi:10.1134/s0030400x13030132

Cited by 29 publications

(10 citation statements)

References 24 publications

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“…Neutral atoms of silver and neutral molecular clusters Ag 2 , Ag 3 , and Ag 4 contribute to the luminescence of PTR glass. 17 As in oxyfluoride glass, clusters of type Ag n O, Ag n F, and Ag n Cl can contribute to the luminescence of PTR glass. Stable clusters of Ag n Cl (n 2 7) are described in Ref.…”

Section: Oxyfluoride Glasses With Molecular Clusters Of Silvermentioning

confidence: 99%

New luminescent glasses and prospects of using them in solar energy

et al. 2013

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This paper presents a comparative analysis of the luminescence and absorption of glasses with molecular clusters of silver and selenium and nanocrystals of copper chloride and cadmium sulfide from the viewpoint of spectral down-conversion of short-wavelength solar radiation into the spectral interval of the maximum efficiency of the photoelectric converter of a solar cell. It is shown that UV and violet radiation can be efficiently converted into the 450-700-nm spectral region by appropriately choosing the luminescence centers in glass, and this promises to reduce the number of stages in a solar cell.

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Section: Oxyfluoride Glasses With Molecular Clusters Of Silvermentioning

confidence: 99%

New luminescent glasses and prospects of using them in solar energy

et al. 2013

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“…Irradiation of the glass with UV radiation and heat treatment at a temperature below the glass-transition temperature transform the charged MCs into neutral centers and are accompanied by a substantial increase of the luminescence intensity. 13,18 Third, glass that originally contains no silver but with additives of CeO 2 (0.07 mol%), and Sb 2 O 3 (0.04 mol%). Silver was introduced into a fiber made from this glass by ion exchange of a Na ion with a Ag ion 30 from the melt of a mixture AgNO 3 5 mass% NaNO 3 95 mass% at a temperature of 350°C for 15 min in one case and for 18 h in a second case.…”

Section: Experimental Techniquementioning

confidence: 99%

“…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

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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.

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“…[1][2][3][4] There are currently several MCs of silver known that are formed in various liquids, zeolites, glasses, and polymers. [5][6][7] The luminescence of the MCs can be used to convert radiation in fluorescent lamps, LEDs, and solar cells, as well as to create photonics devices and miniature biocompatible markers.…”

Section: Introductionmentioning

confidence: 99%

“…10 The absorption and luminescence bands of silver atoms and ions, as well as of the molecular ions Ag 2 and Ag 3 and the dimers Ag -Ag in NaCl and phosphate-glass matrices, were determined in Ref. 11.…”

Section: Introductionmentioning

confidence: 99%

The effect of ions of rare-earth metals on the temperature dependence of the luminescence of molecular clusters of silver in oxyfluoride glasses

Arafonova¹,

Сидоров²,

Колобкова

et al. 2014

J. Opt. Technol.

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The influence of temperature on the spectral composition and luminescence intensity of oxyfluoride glasses containing molecular clusters of silver and ions of the rare-earth metals samarium and terbium has been investigated. It is shown that introducing these ions into the composition of the glass increases the luminescence intensity of the molecular clusters of silver and the temperature sensitivity of their luminescence intensity. In oxyfluoride glass with molecular clusters of silver and Tb 3 ions, the overall luminescence intensity in the 20°C-250°C temperature range is attenuated by a factor of 50. It is shown that molecular clusters of silver are characterized by temperature sensitivity of the luminescence intensity in the range 0.045-0.099 dB∕°C.OCIS codes: (160.2540) Fluorescent and luminescent materials; (160.5690) Rare-earth-doped materials; (280.4788) Optical sensing and sensors. http://dx.

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Influence of UV irradiation and heat treatment on the luminescence of molecular silver clusters in photo-thermo-refractive glasses

Cited by 29 publications

References 24 publications

New luminescent glasses and prospects of using them in solar energy

New luminescent glasses and prospects of using them in solar energy

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

The effect of ions of rare-earth metals on the temperature dependence of the luminescence of molecular clusters of silver in oxyfluoride glasses

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