Luminescence of Phosphate Glasses: P2O5-ZnO-BaF2-K2TeO3-Al2O3-Nb2O5 Doped with Sm3+ Ions for Display and Laser Material

Structural, photoluminescence, and optical characteristics of a Sm3+‐doped lead borate–strontium–tungsten glass system: Evaluation of Judd–Ofelt intensity parameters and radiative properties

“…Glass samples with greater values of Ω 2 and Ω 4 but lower values of Ω 6 are regarded as good hosts as they can produce a high luminescence intensity ratio [62]. The obtained intensity parameters of our glass samples followed the trend Ω 4 > Ω 6 > Ω 2 , which agrees with referenced reports [16, 59, 63]. Various trends for the J–O intensity parameters in different Sm 3+ ‐doped glass compositions have been reported previously and are presented in Table 5.…”

“…For the presented glass system, $$$ {\Omega}_2 $$$ is smallest for sample BPbSrWSm 1.5 and largest for sample BPbSrWSm 2.0 . The obtained values of $$$ {\Omega}_2 $$$ of our studied glass were higher than tellurium–phosphate [16, 55], calcium–borate [29], zinc‐phosphate [56], alumino–borate [9], and zinc–tellurite [3]. This shows that the studied glass had higher covalency of the Sm–O bond and stronger asymmetry around the Sm 3+ ion site.…”

“…The bands in Figure 2b were assigned to the transitions from ground state 6 H 5/2 to the excited states 6 F 1/2 , 6 F 3/2 , 6 F 5/2 , 6 F 7/2 , 6 F 9/2 , 6 F 11/2 , and 6 H 15/2 of Sm 3+ [15, 16]. The transition band intensities are sharp as a result of the 4f electrons shielding by the filled 5s and 5p shells [28].…”

“…Lately, rare earth (RE)-doped glass have gained significant consideration and are used in vast commercial applications. They are employed to develop advanced lasers and optical devices [13][14][15][16][17][18] due to their unique photoluminescence properties [1,[19][20][21]. They are commonly utilized to investigate the structural changes in a glass host due to their distinctive properties emanating from the optical transitions in their unfilled 4f shell [22].…”