Specific features of Stokes photoluminescence of the La2S3–Ga2S3–Er2S3 glasses

Halyan, V. V.; Yukhymchuk, Volodymyr; Gule, Ye.G.; Kityk, I.V.; Zhydachevskyy, Ya.; Ivashchenko, I. A.; Козак, В. С.; Kevshyn, A. H.; Suchocki, A.; Yatsyniuk, T.K.; Piasecki, M.

doi:10.1016/j.optmat.2022.112394

Cited by 4 publications

(1 citation statement)

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“…However, the structure of such modified glasses associated with free-volume defects has not been fully investigated in all aspects of its manifestation, which significantly limits further progress in modern IR photonics. It is known that the closest arrangement of atoms in glass and nanomaterials can be adequately investigated using numerous experimental measurement methods [21][22][23][24][25][26][27][28][29][30][31][32]. However, the row of experimental probes available to study atomic-deficient void structure of such materials is rather limited, especially at nanometer and subnanometer scale.…”

Section: Introductionmentioning

confidence: 99%

Modification of free-volume defects in the GaS2–Ga2S3–CsCl glasses

Klym

Calvez

Попов

2023

J Mater Sci: Mater Electron

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Modification of free-volume positron trapping defects in the GaS 2 -Ga 2 S 3 -CsCl chalcogenide glasses was studied using positron annihilation lifetime spectroscopy and Doppler broadening of annihilation radiation methods. It is shown that the addition of CsCl to the main glass matrix leads to agglomeration of internal free-volume defects, which are di-or tri-atomic vacancies. However, an excessive amount of CsCl component causes a decrease in the size and content of these defects in the internal structure of the glass against the background of water adsorption in nanovoids with a radius of 0.3 nm. The obtained results are confirmed by normal and abnormal trends in the correlation of the S parameter, which characterizes the annihilation of positrons with low-momentum valence electrons and the W parameter, which corresponds to the annihilation of positrons with high-momentum core electrons.

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