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一个新的超细发光La2O3+气凝

Víctor M García Ramírez¹, Antonieta García Murillo¹, Felipe de J Carrillo Romo¹

¹Instituto Politecnico Nacional CIITEC, Azcapotzalco, Mexico City 02250, Mexico.

Gels (Basel, Switzerland)

|August 25, 2023

概括

这项研究用sol-gel和超临界干燥合成了La₂O₃:Eu³⁺发光气凝. 由此产生的材料具有红外辐射,在50%的Eu³⁺时具有最佳发光,适合光电子应用.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
发光的阴影是什么意思

背景情况:

稀土氧化物对于光电子设备至关重要.
开发用于发光材料的高效合成方法至关重要.
气凝具有独特的多孔结构,有可能用于先进的应用.

研究的目的:

为了合成和表征La₂O₃:Eu³⁺发光气凝.
为了研究Eu3+度对发光特性的影响.
探索这些气凝在光电子设备中的潜力.

主要方法:

材料合成的Sol-gel方法.
用于制造气凝的超临界干燥技术.
进行X射线衍射 (XRD),传输电子显微镜 (TEM),扫描电子显微镜 (SEM) 和光发光谱镜以进行表征.

主要成果:

La₂O₃:Eu³⁺气凝表现出半晶状的行为和一个多孔的,珊瑚状的纳米结构.
在 λ = 793 nm 观察到红外辐射.
通过50%的Eu3+兴奋剂实现了最大的光发光强度.

结论:

稀土氧化物的发光气凝可以在不经热处理的情况下制造.
这些材料显示出在光电子设备中使用的潜力.
合成方法为新型发光纳米材料提供了一条途径.

关键词:

气凝是一种气凝.发光效应的发光效应稀土是一种稀土.

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