广泛调节的全可见光谱ZnS/ZnO:Mn2+复合微,用于温暖的WLED应用
Hoang Gia Chuc1, Pham Minh Tri1, Manh Trung Tran1
1Faculty of Materials Science and Engineering, Phenikaa School of Engineering, Phenikaa University Yen Nghia Ha-Dong District Hanoi 12100 Vietnam trung.tranmanh@phenikaa-uni.edu.vn.
RSC advances
|July 23, 2025
概括
通过热扩散开发新的硫化/氧化 (ZnS/ZnO:Mn2+) ,为温暖白色LED提供稳定,无毒的替代品. 这些光器表现出可调整的全可见光谱辐射,用于增强照明应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光电学是指光电子产品.
背景情况:
- 热白LED (w-WLED) 的开发对于改善光质,能源效率和可持续性至关重要.
- 添加 (Mn2+) 体提供广泛可见的辐射,适合紫外线送的w-WLED.
- 现有的化物和石榴石面临着毒性和复杂合成的挑战,需要像ZnO和ZnS这样的稳定替代品.
研究的目的:
- 使用简单的热扩散方法合成可调整的全可见光谱ZnS/ZnO:Mn2+.
- 为了研究合成的结构和光发光特性.
- 为了评估光涂层LED原型用于温暖照明应用的性能.
主要方法:
- 通过热扩散合成ZnS/ZnO:Mn2+.
- 使用X射线衍射 (XRD) 和拉曼光谱学进行结构性表征.
- 光发光 (PL) 和光发光激发 (PLE) 测量以分析发射和吸收特性.
- 一个涂LED原型的制造和测试.
主要成果:
- 在ZnS/ZnO:Mn2+中观察到温度驱动的相位演变.
- 强烈的紫外线吸收和400-700纳米范围的广泛发射被证实.
- 通过调整Mn2+度来调整发射颜色,以0.1%Mn2+达到最佳的温暖白光.
- 这种LED原型显示出高光效率 (127.7 lm/W),CRI为72,CCT为2506 K.
结论:
- 通过热扩散合成的ZnS/ZnO:Mn2+是产生温暖白光的有效方法.
- 开发的光体为w-WLED提供可调节的发射和良好的性能特征.
- 这种方法为照明应用提供了稳定,无毒和高效的替代方案.
相关概念视频
01:14Photoluminescence: Applications
489
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...
489
01:23Photoluminescence: Fluorescence and Phosphorescence
2.3K
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...
2.3K