含有酸玻璃的Mn2+和Nd3+的物理,热和光学特性
1Department of Biochemistry, Chemistry, and Physics, Georgia Southern University, Statesboro, Georgia 30460, United States.
ACS physical chemistry Au
|July 29, 2024
概括
用 (Mn2+) 和 (Nd3+) 离子合的酸盐玻璃显示了可调节的光学特性,用于太阳能应用. 优化的Nd3+兴奋剂增强近红外辐射,平衡红色辐射进行光谱转换.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光子学是指光子学的使用方法.
背景情况:
- 用稀土和过渡金属离子合的酸盐玻璃对光学应用具有前景.
- (Mn2+) 和 (Nd3+) 离子分别具有明显的红色和近红外 (NIR) 发射特性.
- 太阳光谱转换需要具有高效光吸收和辐射操纵的材料.
研究的目的:
- 为了研究酸盐玻璃的光学特性,与Mn2+和Nd3+离子配合.
- 分析不同度的3+对2+和3+光学相互作用的影响.
- 评估这些眼镜在太阳光谱转换应用中的潜力.
主要方法:
- 通过化合成名义成分50P2O5-(48 - x) BaO-2MnO-xNd2O3 (x = 0, 0.5, 1.0, 2.0 mol %) 的酸盐玻璃.
- 使用X射线衍射,密度测量,差分扫描热度计,扩度计,UV对NIR光学吸收和光发光谱学的表征.
- 使用Tauc和Urbach图表分析光学吸收边缘,并评估排放衰变动力学.
主要成果:
- 合成的玻璃是X射线无形的,其物理和热特性受到Nd2O3含量的影响.
- 光学吸收证实了Mn2+的存在,并增加了Nd3+的吸收与兴奋剂度.
- 光发光显示Mn2+排放的抑制与Nd3+的增加,表明有效的Mn2+ → Nd3+能量转移.
- 激发Mn2+导致最大的Nd3+ NIR发射在1.0mol%的Nd2O3,尽管总体寿命缩短.
结论:
- 与2+和3+一起配合酸盐玻璃可控制红色和NIR辐射.
- 观察到有效的Mn2+到Nd3+的能量转移,这对于光谱转换至关重要.
- 含有0.5mol%Nd2O3的酸盐玻璃显示出通过平衡红色和NIR辐射来实现太阳光谱转换的希望.
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