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通过火焰热解法合成的eu-doped和undopedgd(2) o(3) 纳米颗粒的光学特征

Ewa M Goldys¹, Krystyna Drozdowicz-Tomsia, Sun Jinjun

¹Division of Information and Communication Sciences, Macquarie University, Sydney 2109 NSW, Australia. goldys@ics.mq.edu.au

Journal of the American Chemical Society

|November 9, 2006

概括

通过火焰热解合成的氧化物纳米粒子表现出有希望的光特性. 分析了它们的结构和光学特征,揭示了先进光标签应用的潜力.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
频谱学是一种光谱学.

背景情况:

稀土合纳米粒子为光标签提供了优势,包括高斯托克斯转移,狭窄的排放,长寿命,光稳定性和低毒性.
用欧 (Eu) 杂的氧化物 (Gd(2) O(3)) 纳米粒子因其独特的光学和结构属性而被研究.

研究的目的:

为了表征与欧相合的加多氧化物纳米粒子的结构和光学特性.
研究这些纳米粒子的光动力学和光谱特征.
评估它们在光标签应用中的潜力.

主要方法:

氧化物纳米颗粒的火焰热解合成.
辐射刺激光谱学用于光谱表征.
时间隔离光谱分析光衰变动力学.
用于结构和晶体分析的X射线衍射 (XRD).

主要成果:

合成产生的Eu:Gd(2) O(3) 主要是单临床和一些立方相.
在230-260nm之间观察到一个明显的氧到欧电荷转移带.
可见的排放带与矩阵表面缺陷有关,而衰变时间显示了兰化物特征的短 (ns) 和长 (ms) 组件.
复杂的中间衰变行为表明能量转移到欧离子.

结论:

通过火焰热解合成的氧化物纳米颗粒具有有利的结构和光学特性.
观察到的光动力学和光谱特征表明它适合用于先进的光标签.
该材料的特性与主要单临性晶体结构一致.

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