双钙钛矿结构Rb3GaF6∶Er3+,Yb3+的合成及上转换发光特性研究

李敬远

人工晶体学报, 2023, 52 (2): 327, 网络出版: 2023-03-18

双钙钛矿结构Rb₃GaF₆∶Er³⁺,Yb³⁺的合成及上转换发光特性研究

Synthesis and Up-Conversion Luminescence Characteristics Study of Rb₃GaF₆∶Er³⁺,Yb³⁺ with Double Perovskite Structure

论文大纲

李敬远 ^*

作者单位

中国人民解放军第一二〇五工厂，北京 100088

摘要

双钙钛矿结构化合物具有化学稳定性高、声子能量低、易于稀土离子掺杂和多种可调变的晶体学格位等优点，是一种优良的上转换发光基质材料。本文采用高温固相法在600 ℃下合成了双钙钛矿结构Rb3GaF6∶Er3+,Yb3+上转换发光材料，并采用X射线粉末衍射仪(XRD)、场发射扫描电镜(SEM)和荧光光谱仪对其成分、结构和发光特性进行系统表征。在980 nm激发下，制备的样品在521和548/561 nm处产生的绿光发射分别归因于Er3+的2H11/2-4I15/2、4S3/2-4I15/2能级上的电子跃迁，同时在656 nm处产生的红光发射对应于Er3+的4F9/2-4I15/2能级上的电子跃迁。此外，本文探究了Rb3GaF6∶Er3+,Yb3+的上转换发光机理。

Abstract

Double perovskite compounds are an excellent up-conversion host material with high chemical stability, low phonon energy, easy doping of rare earth ions and a variety of tunable crystallographic lattices. In this paper, Rb3GaF6∶Er3+, Yb3+ up-conversion luminescent materials with the double perovskite structure were synthesized by high-temperature solid-phase method at 600 ℃, and the composition, structure and luminescence characteristic were systematically characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (SEM) and fluorescence spectrometer. Under 980 nm excitation, the prepared samples produced green emission at 521 and 548/561 nm attributes to electron transitions on the 2H11/2-4I15/2 and 4S3/2-4I15/2 level of Er3+, respectively, and the red emission at 656 nm corresponding to electron transitions on the 4F9/2-4I15/2 level of Er3+. In addition, the up-conversion luminescence mechanism of Rb3GaF6∶Er3+,Yb3+ was also investigated.

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李敬远. 双钙钛矿结构Rb₃GaF₆∶Er³⁺,Yb³⁺的合成及上转换发光特性研究[J]. 人工晶体学报, 2023, 52(2): 327. LI Jingyuan. Synthesis and Up-Conversion Luminescence Characteristics Study of Rb₃GaF₆∶Er³⁺,Yb³⁺ with Double Perovskite Structure[J]. Journal of Synthetic Crystals, 2023, 52(2): 327.

双钙钛矿结构Rb₃GaF₆∶Er³⁺,Yb³⁺的合成及上转换发光特性研究

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