Optical and thermal properties of luminescent Er3+-doped lithium tellurite glasses

被引：3
作者：
Hirdesh [1 ]
Khanna, Atul [1 ]
机构：
[1] Guru Nanak Dev Univ, Dept Phys, Amritsar, Punjab, India
来源：
PHASE TRANSITIONS | 2021年 / 94卷 / 11期
关键词：
Tellurite glasses; Structural and thermal properties; UV-visible spectra; Er3+ downconversion; Raman and photoluminescence spectroscopy; MU-M EMISSION; REVERSE MONTE-CARLO; X-RAY-DIFFRACTION; SPECTROSCOPIC PROPERTIES; UP-CONVERSION; ER3+ IONS; QUANTUM EFFICIENCY; BISMUTH TELLURITE; ANTI-GLASS; ERBIUM ION;
D O I：
10.1080/01411594.2021.1979548
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The effects of Er3+ concentration on the short-range order, thermal and luminescence properties of lithium tellurite glasses (xEr(2)O(3)-24Li(2)O-(75-x)TeO2, x = 1-5 mol%) were studied by X-ray diffraction, density measurements, differential scanning calorimetry, UV-visible, Raman and photoluminescence spectroscopic techniques. The incorporation of 1-5 mol% Er2O3 in the lithium tellurite glass system increases density steadily from 4.97 to 5.21 g cm(-3), it decreases the average Te-O co-ordination number from 3.51 to 3.44 due to short-range structural transformation: TeO4 -> TeO3 units, and it enhances the glass transition temperature from 264 degrees C to 298 degrees C. The glass sample with 1 mol% Er2O3 produces maximum green light emission with 89% color purity and fluorescence quantum yield of 3.05%. On increasing the Er2O3 concentration from 1 to 5 mol%, very strong concentration quenching effects on the luminescence intensity are found.
引用
收藏
页码：856 / 870
页数：15
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