TY - JOUR

T1 - Peculiarity of the Structure and Luminescence of Glasses in La2S3-Ga2S3-GeS2:Pr3+ System

AU - Tverjanovich, Andrey

AU - Smirnov, Egor

PY - 2023/11/9

Y1 - 2023/11/9

N2 - The effect of modifying the composition of a glass matrix based on the Ga 2S 3-GeS 2:Pr 3+ system due to the addition of La 2S 3 on the structure and the optical and luminescent properties of these glasses has been studied. It has been shown that the addition of La 2S 3 leads to changes in the nearest structural environment of Ga, Ge, and S and increases the degree of ionicity of the bonds of the Pr 3+ ion. Despite the existence of a large glass formation region in the Ga 2S 3-GeS 2-La 2S 3 system and the structural and chemical similarity of La and Pr, La 2S 3 does not promote a more uniform distribution of Pr 3+ ions in the glass matrix, and thus does not reduce the concentration quenching of the luminescence of Pr 3+ ions. However, the addition of La 2S 3 increases the probability of emission of Pr 3+ 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).

AB - The effect of modifying the composition of a glass matrix based on the Ga 2S 3-GeS 2:Pr 3+ system due to the addition of La 2S 3 on the structure and the optical and luminescent properties of these glasses has been studied. It has been shown that the addition of La 2S 3 leads to changes in the nearest structural environment of Ga, Ge, and S and increases the degree of ionicity of the bonds of the Pr 3+ ion. Despite the existence of a large glass formation region in the Ga 2S 3-GeS 2-La 2S 3 system and the structural and chemical similarity of La and Pr, La 2S 3 does not promote a more uniform distribution of Pr 3+ ions in the glass matrix, and thus does not reduce the concentration quenching of the luminescence of Pr 3+ ions. However, the addition of La 2S 3 increases the probability of emission of Pr 3+ 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).

UR - https://www.mendeley.com/catalogue/0daa2b28-3b59-3ca6-a0a7-2fc69fa472f2/

U2 - 10.3390/ma16227094

DO - 10.3390/ma16227094

M3 - Article

C2 - 38005024

VL - 16

JO - Materials

JF - Materials

SN - 1996-1944

IS - 22

M1 - 7094

ER -