双钙钛矿结构Rb3GaF6∶Er3+,Yb3+的合成及上转换发光特性研究

摘要/Abstract

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²H_11/2-⁴I_15/2、⁴S_3/2-⁴I_15/2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⁴F_9/2-⁴I_15/2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。

关键词: 双钙钛矿, Rb₃GaF₆∶Er³⁺,Yb³⁺, 上转换, 发光特性, 稀土掺杂, 高温固相法, 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 ²H_11/2-⁴I_15/2 and ⁴S_3/2-⁴I_15/2 level of Er³⁺, respectively, and the red emission at 656 nm corresponding to electron transitions on the ⁴F_9/2-⁴I_15/2 level of Er³⁺. In addition, the up-conversion luminescence mechanism of Rb₃GaF₆∶Er³⁺,Yb³⁺ was also investigated.

Key words: double perovskite, Rb₃GaF₆∶Er³⁺,Yb³⁺, up-conversion, luminescence characteristic, rare earth doping, high-temperature solid-phase method, luminescence mechanism

中图分类号:

O482.31

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): 327-333.

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): 327-333.

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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

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