Study on Tb³⁺ containing high silica and low silica calcium aluminate glasses: Impact of optical basicity

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• 作者：Atul D. Sontakke ; K. Annapurna ; ^{annapurnak@cgcri.res.in} ; ^{glasslab42@hotmail.com}
• 关键词：Glass ; Infrared spectroscopy ; Optical spectroscopy ; Optical basicity ; Luminescent materials
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：August, 2012
• 卷：94
• 期：Complete
• 页码：180-185
• 文件大小：1070 K

摘要

Two series of glasses based on high silica (CAS) and low silica calcium aluminates (LSCA) have been investigated for their structural, optical and Tb³⁺ luminescence properties. The compositional modification reduces host phonon energy in LSCA glasses. Still, LSCA glasses exhibit Tb³⁺ green luminescence quenching, whereas no quenching observed in CAS glasses. Material property influence on this behaviour has been discussed with an insight into the redox state of active ions.