Abstract
Melt quenching was utilized to produce Er+3-doped lead–bismuth tellurite glasses with the following composition: (75-x) TeO2–15 PbO–10 Bi2O3–xEr2O3, where x = 0, 0.5, 1, 1.5, 2, and 2.5 mol%. The impact of Er3+ doping was assessed by analyzing its optical and physical properties. Using XRD, the non-crystalline character of the materials was determined. The density of the samples was increased from 6.387 to 6.528 g.cm−3. The absorption spectra show eight transition bands corresponding to the transitions from 4I15/2to 4I13/2, 4I11/2, 4I9/2, 4F9/2, 4S3/2, 2H11/2, 4F7/2 and 4F5/2, respectively. Judd–Ofelt theory was utilized to compute both the experimental and calculated oscillator strengths. The trends of the intensity parameters are as follows: Ω2 > Ω6 > Ω4. A total of three emission bands were detected in the spectrum of fluorescence. The green transition 4S3/2 → 4I15/2 is the strongest among other transitions. To ascertain the color coordinates, the CIE 1931 chromaticity diagram was applied. 95.11% was the maximum quantum efficiency for the transition 4S3/2 → 4I15/2. The findings indicate that TPBE2 glass exhibits considerable potential as a material for photonic applications and the production of laser optical systems.
