相关实验视频

Updated: Jan 18, 2026

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials

Published on: September 13, 2024

Sm3+ 活性铁纳米:合成,结构,光学和发光研究

Arti Khajuria¹, Vishav Deep Sharma¹, Pooja Khajuria¹

¹School of Physics, Shri Mata Vaishno Devi University, Katra, J&K, 182320, India.

Journal of fluorescence

|June 7, 2025

概括

新的萨马化酸盐 (Sm3+) 纳米被合成为白色发光二极管. 这些光器发出珀色的光,显示出对固态照明应用的潜力.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
发光的光度是非常的低.

背景情况:

开发高效的发光材料对于先进的照明技术至关重要.
(Sm3+) 离子以其特有的排放特性而闻名.
基于酸盐 (P2O7) 4− 的材料提供可调节的光学特性.

研究的目的:

合成了新的K2Mg(1−x) SmxP2O7纳米.
研究它们的结构,形态和光学特性.
评估它们在白色发光二极管 (WLED) 应用中的潜力.

主要方法:

自传播溶液燃烧合成. 自传播溶液燃烧合成.
用于结构验证的X射线衍射 (XRD).
福里埃变换红外光谱 (FTIR) 用于功能组识别.
高分辨率传输电子显微镜 (HRTEM) 用于形态学.
用于电子结构的X射线光电子光谱 (XPS).
扩散反射光谱 (DRS) 用于光学带隙测定.
光发光 (PL) 光谱法用于排放特征.
对颜色特性进行光度检测.

主要成果:

单相K2Mg(1−x) SmxP2O7纳米被成功合成了.
FTIR证实了酸盐组的存在.
HRTEM和XPS提供了对形态学和电子状态的见解.
在402nm激发时,PL光谱学揭示了在603nm (4G5/2 → Sm3+的6H7/2过渡) 的特征性辐射峰值.
优化的光体呈现了87%的色彩纯度,相关的色彩温度 (CCT) 为1768K,以及CIE坐标 (x=0.58,y=0.42).

结论:

合成的K2Mg(1−x) SmxP2O7纳米具有高效的珀色排放.
它们的特性使得它们成为固态照明的合适候选者,特别是在WLED中.
这项研究突出了用Sm3+合的酸盐基材料在照明应用中的潜力.

关键词:

这就是为什么PL PL PL PL.美国的FTIR是FTIR.时间 HRTEM HRTEM 紫外线-Vis 在紫外线下.这是XPSXPS.XRD XRD 在线观看

更多相关视频

Low-energy Cathodoluminescence for OxyNitride Phosphors

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

相关概念视频

Photoluminescence: Applications

Photoluminescence: Applications

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...

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence: Fluorescence and Phosphorescence

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...

Variables Affecting Phosphorescence and Fluorescence

Variables Affecting Phosphorescence and Fluorescence

Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...