SrAl4O7:Eu3+ 纳米荧光粉的结构、磷光、热和介电特性

IF 2.3 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS
R. Meenakshi, V. T. Jisha, S. S. Soumya
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引用次数: 0

摘要

利用溶胶-凝胶法成功合成了掺杂不同重量百分比铕(1、3、5 和 12 wt%)的 SrAl4O7 纳米荧光粉。粉末 X 射线衍射证实了合成样品的相纯度,平均结晶尺寸随着掺杂铕浓度的增加而增大。带隙值随 SrAl4O7 中掺杂铕浓度的增加而增大。掺杂 Eu3+ 的材料的衰变动力学和发光光谱与浓度密切相关。TG 曲线显示了前驱体中有机化合物的分解以及大量气体的评估和 SrAl4O7 的结晶。DSC 曲线显示了松散结合的有机分子的分解、水分子的消除以及造成内热峰的其他表面悬键。介电常数随着频率的增加而降低。这些研究成果使重点材料有望应用于储能设备、太阳能电池和照明技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Structural, phosphorescence, thermal, and dielectric properties of SrAl4O7: Eu3+ nano phosphors

Structural, phosphorescence, thermal, and dielectric properties of SrAl4O7: Eu3+ nano phosphors

Structural, phosphorescence, thermal, and dielectric properties of SrAl4O7: Eu3+ nano phosphors

SrAl4O7 nano phosphors doped with different weight percentages of europium (1, 3, 5, and 12 wt%) were successfully synthesized using the sol-gel method. The phase purity of the synthesized samples was confirmed by powder X-ray diffraction and the average crystallite size increased with an increase in dopant concentration of europium. The band gap value increases with an increase in the dopant concentrations of europium in SrAl4O7. The decay kinetics and luminescence spectra of materials doped with Eu3+ were strongly concentration-dependent. TG curves show the decomposition of the organic compounds in the precursors together with the evaluation of great amounts of gases and crystallization of SrAl4O7. DSC curves show the breakdown of loosely bound organic molecules, the elimination of water molecules, and other surface dangling bonds responsible for the endothermic peaks. The dielectric constant decreases with an increase in frequency. The outcomes of these investigations made the focused materials worthy of applications in energy storage devices, solar cells, and lighting technology.

Graphical Abstract

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来源期刊
Journal of Sol-Gel Science and Technology
Journal of Sol-Gel Science and Technology 工程技术-材料科学:硅酸盐
CiteScore
4.70
自引率
4.00%
发文量
280
审稿时长
2.1 months
期刊介绍: The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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