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合化LiCaBO3:Dy3+的结构和发光特性
M B Coban1, Jabir Hakami2, H Aydin3
1Balikesir University, Faculty of Arts and Sciences, Department of Physics, Balikesir, Turkiye.
概括
用dysprosium添加酸和酸的酸被合兴奋剂增强,产生更好的白光发射. 联合注导致了用于照明和探测器应用的卓越发光和热稳定性.
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:
- 酸酸 (LiCaBO3,LiCOB) 是用于照明和检测的有希望的材料.
- (Dy3+) 的注引入了特有的发光,但性能可能受到结构和热因素的限制.
- 研究合兴奋剂 (Na+,K+),以提高LiCOB:Dy3+的电荷补偿和结构稳定性.
研究的目的:
- 为了合成和表征Dy3+化LiCOB光剂与合化 (Na+,K+).
- 研究合兴奋剂对结构性,振动性和发光性质的影响.
- 评估这些光体在固态照明和辐射检测方面的潜力.
主要方法:
- 对于Dy3+兴奋剂的LiCOB光体的Sol-gel燃烧合成途径.
- 用瑞特维尔德精细化进行结构分析的X射线衍射 (XRD).
- 福利埃变换红外 (FTIR) 和拉曼光谱用于振动表征.
- 光发光 (PL) 谱学,温度依赖的PL,Judd-Ofelt和Dexter分析用于发光和机制研究.
主要成果:
- 证实了正方形相形成,Dy3+替代了Ca2+位点,的协同兴奋剂有助于补偿电荷.
- 与K+相比,Na+提供了优越的结构稳定性和增强的PL强度.
- 最佳Dy3+度在2重%,增强发光和可调节的准白光发射通过合兴奋剂实现.
- 合剂合剂光体表现出优异的热稳定性,具有低的激活能量,用于陷辅助恢复.
结论:
- 的联合剂显著改善了LiCOB:Dy3+的发光和热稳定性.
- 在提高排放强度和稳定性方面,Na+联合兴奋剂特别有效.
- 这些修改后的体显示出在固态照明和辐射探测器中应用的巨大潜力.
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