红色的光发射在欧3+中被和Dy3+/欧3+中被的四玻璃用于固态照明设备
P Sai Dinesh1, Y C Ratnakaram1, M Seshadri2
1Department of Physics, Sri Venkateswara University, Tirupati, Andhra Pradesh, India.
概括
用欧 (Eu3+) 和异 (Dy3+) 杂四氧化玻璃的光谱分析显示,能量从Dy3+转移到Eu3+. 这种 codoping 产生红色的光,具有可调色的颜色特性,用于潜在的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 频谱学是一种光谱学.
背景情况:
- 四酸盐 (LiTeBo) 玻璃正在研究其光学特性.
- 用欧 (Eu3+) 和 (Dy3+) 等稀土离子进行兴奋剂可以改变发光特性.
- 了解能量转移机制对于开发新的光和光学材料至关重要.
研究的目的:
- 用光谱分析单独合的Eu3+和配的Dy3+/Eu3+ LiTeBo眼镜.
- 研究土和成分对玻璃性能的影响.
- 探索Dy3+和Eu3+离子之间的能量转移动态.
主要方法:
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和富里埃变换红外光谱 (FTIR) 的表征.
- 进行了光学吸收,光发光和光衰变的光谱分析.
- 计算光波段间隙,乌尔巴赫能量和CIE色度坐标.
主要成果:
- 光学吸收光谱产生了粘合特性,光学能量带间隙,nephlauxetic比率和Urbach能量,用于Eu3+合眼镜.
- 辐射光谱揭示了颜色坐标,相关的颜色温度和颜色纯度.
- 通过光谱重叠和光衰变分析表明,从Dy3+到Eu3+的能量转移得到确认,导致红色的光辐射.
结论:
- 用Dy3+和Eu3+对LiTeBo眼镜进行合,有助于能量转移,从而产生高效的红色光辐射.
- 可以通过调整激发波长来调整CIE色度坐标,这表明可调节照明应用的潜力.
- 这项研究提供了对稀土合玻尿酸玻璃的光谱行为的见解.
相关概念视频
01:23Photoluminescence: Fluorescence and Phosphorescence
573
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...
573
01:14Photoluminescence: Applications
340
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
340