Tverjanovich Andrey, Tveryanovich Yurii S, Shahbazova Christina
Institute of Chemistry, St. Petersburg State University, 198504 St. Petersburg, Russia.
Materials (Basel). 2023 Jun 28;16(13):4672. doi: 10.3390/ma16134672.
The physicochemical, optical, and luminescent properties and structures of glasses of the GaS-GeS-SbS:Pr system have been studied in a wide range of concentrations of the main components in order to reveal their correlation with the composition. According to the calculations using the Judd-Ofelt theory, glasses with a high content of SbS should provide the highest luminescence efficiency of Pr ions. However, this result is leveled by enhancing the concentration quenching effect, followed by an increase of the SbS content in the glasses. The introduction of Pr leads to a significant increase in the fraction of Sb-Sb, Sb-Ge, Ge-Ge bonds in glasses enriched with SbS and GeS. In the cases of the glasses enriched with GaS, this effect was not observed, apparently because Ga promotes the formation of three-coordinated sulfur atoms.
研究了GaS-GeS-SbS:Pr体系玻璃在主要成分浓度变化范围很广的情况下的物理化学、光学和发光性质及结构，以揭示它们与组成之间的相关性。根据利用贾德-奥费尔特理论进行的计算，具有高SbS含量的玻璃应能提供Pr离子的最高发光效率。然而，随着玻璃中SbS含量的增加，浓度猝灭效应增强，这一结果被削弱。Pr的引入导致富含SbS和GeS的玻璃中Sb-Sb、Sb-Ge、Ge-Ge键的比例显著增加。在富含GaS的玻璃中未观察到这种效应，显然是因为Ga促进了三配位硫原子的形成。
