在Eu3+激活的Ba2LaVO6和Ba2GdVO6双矿光体中的结构发光相关性
Mustafa İlhan1, Sibel Gökçe2, Lütfiye Feray Güleryüz3
1Department of Jewelry and Jewelry Design, Faculty of Applied Sciences, Marmara University Kartal 34865 İstanbul Türkiye mustafa.ilhan@marmara.edu.tr.
RSC advances
|February 11, 2026
概括
欧激活的双矿石显示出作为发射红色的光体具有前景. 这项研究揭示了Ba2LaVO6:Eu3+和Ba2GdVO6:Eu3+光体的结构刚度发光相关性,指导了针对量身定制的发射的主体选择.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的阴影是什么意思
背景情况:
- 欧 (Eu3+) 激活的双矿被研究为红色发射体,这是由于可调的组成和多功能结构.
- 了解主机网格特性对于优化性能至关重要.
研究的目的:
- 为了合成和描述Ba2La1-xVO6:xEu3+和Ba2Gd1-xVO6:xEu3+.
- 为了阐明宿主依赖的发光行为,并建立结构-刚性-发光相关性.
主要方法:
- 合成的固态反应路径.
- 用瑞特维尔德精细化进行结构分析的X射线衍射 (XRD).
- 扫描电子显微镜 (SEM) 用于微观结构的研究.
- X射线光电子光谱 (XPS) 用于元素组成和氧化状态的验证.
- 光发光 (PL) 光谱,包括温度依赖测量和CIE分析.
主要成果:
- 基于La的和基于Gd的宿主都表现出单相正Pnma对称性,基于La的网格更灵活,基于Gd的网格更刚硬.
- Ba2LaVO6:Eu3+表现出异常的色红色排放 (5D0 → 7F4占主导地位),具有高的兴奋剂耐受性,而Ba2GdVO6:Eu3+表现出常规的红色排放 (5D0 → 7F2占主导地位),具有较早的度灭.
- 显著的热灭行为与格子刚性相关;基于La的光体显示出更好的热稳定性.
结论:
- 在Eu3+激活的Ba2MVO6 (M = La,Gd) 中确立了一个明确的结构-刚度-发光相关性.
- 主机格子特性显著影响排放特性,颜色纯度和热稳定性.
- 这为设计可控排放的双矿光体提供了基本的见解.
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