Role of PbO substitution by PbF2 on structural behavior and luminescence of rare earth-doped lead borate glass

FTIR and UV–VIS optical absorption spectra of gamma-irradiated MoO3-doped lead borate glasses

“…Moreover, the alkali-free borate glasses such as MoO 3 -PbO-B 2 O 3 glasses are moisture resistant and possess low rates of crystallization and relatively high electrical resistance, since PbO, in contrast to the conventional alkali/alkaline earth oxide modifiers, has the ability to form stable glasses [5]. Quite large glass-forming region and wide transparency from the UV-VIS to the near infrared spectral range as well as a large variety of structural groups existing in compositional-dependent lead borate glasses are promising for structural and optical investigations [6]. MoO 3 containing glasses have been the subject of many investigations due to their catalytic properties.…”

Spectroscopic properties of Yb3+ and Er3+ ions in heavy metal glasses

“…Luminescence decays from the 4 I 13/2 state of Er 3+ ions were analyzed in our previous works [10,26]. Luminescence decay analysis clearly indicates that the 4 I 13/2 lifetime of Er 3+ ions in lead borate glass is close to 400 s and its value increases up to 820 s, when PbO was totally replaced by PbF 2 [26]. Our values are not changed, when glass samples are co-doped with Yb 3+ and Er 3+ .…”

“…Lead borate glasses singly doped with Er 3+ or doubly doped with Yb 3+ and Er 3+ exhibit very good broadband properties, but the luminescence decays from the upper 4 I 13/2 laser state are relatively short compared to lead germanate glass. Luminescence decays from the 4 I 13/2 state of Er 3+ ions were analyzed in our previous works [10,26]. Luminescence decay analysis clearly indicates that the 4 I 13/2 lifetime of Er 3+ ions in lead borate glass is close to 400 s and its value increases up to 820 s, when PbO was totally replaced by PbF 2 [26].…”

Luminescence spectroscopy of rare earth-doped oxychloride lead borate glasses

“…In this system, lead oxide plays the role of glass former or glass modifier, influencing strongly the structure and optical properties of rare earth ions, which depends on PbO content in the borate glass matrix. Moreover, the introduction of PbF 2 to lead borate glass [6,7] as well as other glass matrices [8][9][10] significantly enhanced luminescence of Ln 3 + ions. The experimental results obtained for Ln-doped glasses modified by PbF 2 are well documented.…”