Structural characterization and compositional dependence of the optical properties of Ge–Ga–La–S chalcohalide glass system

Li, Lini; Jiao, Qing; Lin, Changgui; Dai, Shixun; Nie, Qiuhua

doi:10.1016/j.optmat.2018.02.041

Cited by 9 publications

(2 citation statements)

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“…This decrease may be related to the relatively lower co GeS2 in the glass. A decrease in the intensity of the peak due to metal-metal bo also observed in [10] upon transition from the glass composition 80GeS2-20Ga2 composition 80GeS2-15Ga2S3-05La2S3. A slight increase in scattering around could be tentatively attributed to the vibrations of the La-S bonds (typically aro cm -1 [9,38]).…”

Section: Initial Glasses Of the Ga2s3-ges2 System And The Influence O...mentioning

confidence: 63%

“…Along the La 2 S 3 -GeS 2 quasi-binary Materials 2023, 16, 7094 2 of 18 section, up to 50 mol.% La 2 S 3 can be incorporated, and along the La 2 S 3 -Ga 2 S 3 section, the range spans from 25 to 50 mol.% La 2 S 3 . Based on this premise, it was a priori believed that significant amounts of other RE elements should homogeneously dissolve in glasses with a high content of La 2 S 3 because they should isomorphically replace the positions of the lanthanum atoms [10,11]. From this point of view, Pr is the most suitable RE element because it is the nearest element to La in the lanthanide series and its ionic radius should be closest to the ionic radius of La at the same coordination number.…”

Section: Introductionmentioning

confidence: 99%

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Peculiarity of the Structure and Luminescence of Glasses in La2S3-Ga2S3-GeS2:Pr3+ System

Tverjanovich,

Smirnov

2023

Materials

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The effect of modifying the composition of a glass matrix based on the Ga2S3-GeS2:Pr3+ system due to the addition of La2S3 on the structure and the optical and luminescent properties of these glasses has been studied. It has been shown that the addition of La2S3 leads to changes in the nearest structural environment of Ga, Ge, and S and increases the degree of ionicity of the bonds of the Pr3+ ion. Despite the existence of a large glass formation region in the Ga2S3-GeS2-La2S3 system and the structural and chemical similarity of La and Pr, La2S3 does not promote a more uniform distribution of Pr3+ ions in the glass matrix, and thus does not reduce the concentration quenching of the luminescence of Pr3+ ions. However, the addition of La2S3 increases the probability of emission of Pr3+ ions and decreases the radiative lifetime. Additionally, it was shown that, when studying the structure and luminescent properties of glasses with La, it is necessary to take into account a significant concentration of rare earth traces (Pr and Nd).

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Section: Initial Glasses Of the Ga2s3-ges2 System And The Influence O...mentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%