用Eu3+离子合的酸玻璃的结构和光谱特性研究
Marta Kuwik1, Karolina Dej1, Tomasz Goryczka2
1Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
概括
将 (IV) 氧化物引入酸盐玻璃会降低声子能量,并改变局部结构. 较高的 (IV) 氧化物含量提高了光强度比,表明了先进光学材料的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 频谱学是一种光谱学.
背景情况:
- 酸盐玻璃是一种多用途的光学材料.
- 纳入 (IV) 氧化物可以改变玻璃的性能.
- 欧 (Eu3+) 离子是常见的发光剂.
研究的目的:
- 研究 (IV) 氧化物对酸盐玻璃结构和发光效应的影响.
- 确定玻璃组成,局部结构和光谱特性之间的关系.
- 评估这些酸玻璃在光学应用中的潜力.
主要方法:
- 合成具有不同xGeO2-(60-x) P2O5组成的酸盐玻璃.
- 使用红外 (IR-ATR) 和拉曼光谱分析局部玻璃结构.
- 通过Eu3+离子的激发和发射光谱来表征发光特性.
主要成果:
- 增加GeO2:P2O5比率导致酸盐网络脱聚合 (Q2到Q1/Q0单位).
- 声波能量从1145厘米-1下降到924厘米-1与更高的GeO2含量.
- 光强度比 (R/O) 随着GeO2度的增加而增加,在55mol%的GeO2.2%时达到5.58.
- 围绕Eu3+离子的局部对称性与酸盐含量和低声能量相关.
结论:
- 纳入 (IV) 氧化物有效地降低了酸盐玻璃中的声子能量.
- 局部结构和光谱性质取决于成分.
- 这些眼镜在低声波能量的光学应用中表现出有前途的特性.
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