Rare earth-doped lead borate glasses and transparent glass–ceramics: Structure–property relationship

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 79; no. 4; pp. 696 - 700
• Main Authors: Pisarski, W.A., Pisarska, J., Mączka, M., Lisiecki, R., Grobelny, Ł., Goryczka, T., Dominiak-Dzik, G., Ryba-Romanowski, W.
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 15.08.2011
• Subjects: Borates - chemistry; Ceramics - chemistry; Glass–ceramics; Lead - chemistry; Lead borate glasses; Luminescence; Metals, Rare Earth - chemistry; Rare earth ions; Spectrophotometry, Infrared; Spectroscopy, Near-Infrared; Spectrum Analysis, Raman; Structure; Structure-Activity Relationship; Temperature; Transition Elements - chemistry; Glass–ceramics; Lead borate glasses; Rare earth ions; Structure; Luminescence
• ISSN: 1386-1425; 1873-3557
• DOI: 10.1016/j.saa.2010.04.022

Correlation between structure and optical properties of rare earth ions in lead borate glasses and glass–ceramics was evidenced by X-ray-diffraction, Raman, FT-IR and luminescence spectroscopy. The rare earths were limited to Eu 3+ and Er 3+ ions. The observed BO 3 ↔ BO 4 conversion strongly depends on the relative PbO/B 2O 3 ratios in glass composition, giving important contribution to the luminescence intensities associated to 5D 0– 7F 2 and 5D 0– 7F 1 transitions of Eu 3+. The near-infrared luminescence and up-conversion spectra for Er 3+ ions in lead borate glasses before and after heat treatment were measured. The more intense and narrowing luminescence lines suggest partial incorporation of Er 3+ ions into the orthorhombic PbF 2 crystalline phase, which was identified using X-ray diffraction analysis.