Spectroscopic characteristics of barium sulfoborophosphate glasses doped samarium ions: Evaluation of Judd-Ofelt intensity parameters and radiative properties

Herein, barium sulfoborophoshate (PBBs) glasses activated with varying contents of Sm3+ ions have been prepared by melt quench technique and optically characterized by means of ultraviolet visible, photoluminescence and fluorescence spectrophotometers to ascertain their spectroscopic traits. UV-Vis-NIR spectra revealed the occurrence of several absorption bands corresponding to the transitions from the ground state to various excited states of the Sm3+ ion. Meanwhile the photoluminescence spectra displayed four prominent emission bands centered at 559, 596, 642 and 709 nm. The as-prepared glass sample with 0.7 mol. % of samarium ions concentration disclosed highest luminescence intensity and quenched afterward. Besides, Judd-Ofelt approach has been applied for the f-f transition of Sm3+ ions to calculate intensity parameters (omega lambda (lambda = 2, 4, 6). Conclusively, the exceptional values achieved for branching ratio > 50%, color purity (99.56 %) and the quantum efficiency (86.21 %) declare the feasibility of the present glass host spe-cifically PBBsSm0.7 sample for visible red laser and display device applications.

Automated summary

Barium sulfoborophosphate (PBBs) glasses activated with varying contents of Sm3+ ions were prepared and optically characterized. The UV-Vis-NIR spectra showed several absorption bands corresponding to transitions of Sm3+ ions, while the photoluminescence spectra exhibited four prominent emission bands. The glass sample with a 0.7 mol. % concentration of samarium ions showed the highest luminescence intensity. The results from the Judd-Ofelt analysis indicated that this sample had a branching ratio over 50%, a color purity of 99.56%, and a quantum efficiency of 86.21%, making it suitable for visible red laser and display device applications.