The Influence of the Bismuth Concentration and Heat Treatment on the Properties of Bismuth-Containing High-Silica Glass: II. Luminescence Properties

Гирсова, М. А.; Firstov, S. V.; Антропова, Т. В.

doi:10.1134/s1087659619020068

Cited by 16 publications

(12 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[24][25][26] Bi ions have been proved to present different valence states in germanate glasses, such as Bi 3+ , 27 Bi 2+ , 28 Bi + , and Bi 0 , 29,30 and each valence state of Bi ions has distinct luminescence bands. Under the action of external fields, such as thermal field 31 and high-energy rays, [32][33][34] the valence state of Bi ions can be easily transformed by gaining and losing electrons, which makes it possible not only to improve the radiation resistance of glass fiber but also reflect the valence changes of Bi ions through the discrepant fluorescence bands and thus profit studying the radiation resistance mechanism of polyvalent metal ions in germanate glasses.…”

Section: Introductionmentioning

confidence: 99%

Heat treatment to regulate bismuth valence toward enhanced radiation resistance in barium gallo‐germanate glass

et al. 2022

View full text Add to dashboard Cite

Due to the excellent infrared transparency, low phonon energy, and high rare‐earth solubility, germanate laser glass has attracted much attention in mid‐infrared fiber lasers for potential coherent laser radar systems, optical detection, remote sensing, and laser surgery. However, radiation‐induce darkening often occurs in fiber lasers that operate in radiation environment. Here, we report a useful strategy to improve the radiation resistance by adding multivalence Bi ions and discuss its radiation resistance mechanism. In order to study the effect of valence states on the radiation resistance of barium gallo‐germanate glass, we adjust the valence states of Bi ions by heat treatment, the potential mechanism of which is discussed in detail based on the absorption, photoluminescence (PL), and Raman spectra. The absorption, electron paramagnetic resonance, and photoluminescence spectra have proved the interconversion of Bi ions between low and high valence, which inhibits the formation of Ge‐related electron center (GEC) and non‐bridging oxygen hole center defects in the irradiation process. In addition, the Bi3+ content increased by heat treatment is beneficial to serve as electron‐trapping centers in γ‐ray irradiation, thus further reducing the formation of GEC. This study provides a simple method to achieve Bi valence regulation, so as to improve the radiation resistance.

show abstract

Section: Introductionmentioning

confidence: 99%

Heat treatment to regulate bismuth valence toward enhanced radiation resistance in barium gallo‐germanate glass

et al. 2022

View full text Add to dashboard Cite

show abstract

“…During the heat treatment of the BPGs, a microcrystalline phase of Bi 2 O 3 oxide was formed in the pores as a result of Bi(NO 3 ) 3 thermolysis [14]. Taking into account the data we received earlier, according to which the bismuth content in the BPG (BQG) samples made of NFF-I glass after one-stage (for 24 h) impregnation is ~2 wt % (in terms of Bi 2 O 3 ), and taking into account that with a threefold increase in the duration of impregnation, the content of bismuth in BPG increases by ~1.4 times [16], it was concluded that the content of bismuth in the studied samples of BPG (BQG) made of NFF-I glass is no less than ~2.8 wt % Bi 2 O 3.…”

Section: Methodsmentioning

confidence: 91%

“…To create bismuth-containing luminescent glass materials, the practical significance of which is due to the prospects of their use as preform materials for optical fibers with laser generation in the IR spectral region, high-silica porous glasses (PGs) can be successfully used [12][13][14][15][16][17]. PGs are obtained as a result of the through leaching of two-phase sodium borosilicate (SBS) glasses in aqueous solutions of mineral acids [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of P2O5 Impurities and Fluoride Ions on The Rheological Properties of Porous Glasses and Bismuth-Containing Composites Based on Them

et al. 2021

Self Cite

View full text Add to dashboard Cite

The results of a study of the rheological properties (shrinkage on heating, viscosity) of porous glasses (PGs) obtained as a result of through acid leaching of two-phase sodium borosilicate glass doped with small additives of P2O5 and fluoride ions, as well as bismuth-containing PGs and quartzoid glasses based on them, depending on the temperature of the heat treatment of the PG and in comparison with the characteristics of the samples obtained from sodium borosilicate glass without additives, are presented. It is found that doping glass with the indicated impurities leads to a decrease in the thermal resistance of the obtained PGs and bismuth-containing PGs. The introduction of bismuth nitrate into PG in the case of the low-temperature treatment (at 120°C) lowers the temperature for the same viscosity values of quartzoid glasses by 15–20°C, in contrast to samples without additives, as well as from higher-temperature treatment (at 650°C) PGs with additives.

show abstract

“…Известно, что пористые стекла обладают развитой пористой структурой [1], что позволяет использовать их в качестве матриц для создания на их основе различных функциональных композитов [2][3][4][5][6][7]. Молекулярные кластеры серебра, состоящие из небольшого количества атомов и ионов, являются промежуточным продуктом при образовании наночастиц Ag из атомов и ионов серебра [8][9][10].…”

Section: Introductionunclassified

Формирование Молекулярных Кластеров Серебра Полимерно-Солевым Методом В Пористых Стеклах

Саратовский¹,

Гирсова²,

Анфимова³

et al. 2023

Оптика И Спектроскопия

View full text Add to dashboard Cite

A methodology for the formation of molecular clusters of silver in silicate nanoporous glasses has been developed. Composite materials containing molecular clusters of silver, silver nanoparticles and zinc oxide have been synthesized. The synthesis was carried out by impregnation of porous glasses in aqueous solutions of silver and zinc nitrates stabilized with high-molecular polyvinylpyrrolidone, followed by heat treatment of samples for decomposition of metal nitrates and polymer. Spectral-luminescent properties of composites have been investigated.

show abstract

The Influence of the Bismuth Concentration and Heat Treatment on the Properties of Bismuth-Containing High-Silica Glass: II. Luminescence Properties

Cited by 16 publications

References 27 publications

Heat treatment to regulate bismuth valence toward enhanced radiation resistance in barium gallo‐germanate glass

Heat treatment to regulate bismuth valence toward enhanced radiation resistance in barium gallo‐germanate glass

Effect of P2O5 Impurities and Fluoride Ions on The Rheological Properties of Porous Glasses and Bismuth-Containing Composites Based on Them

Формирование Молекулярных Кластеров Серебра Полимерно-Солевым Методом В Пористых Стеклах

Contact Info

Product

Resources

About