Er,Na:CaF2透明陶瓷的制备与光谱性能研究

摘要/Abstract

摘要： 采用真空热压法制备Er³⁺、Na⁺共掺杂CaF₂透明陶瓷(直径为16 mm, 样品厚度为3 mm),Er³⁺掺杂浓度为3%,Na⁺掺杂浓度为0、0.5%、1.0%、1.5%和2.0%。所得Er,Na:CaF₂粉体颗粒为球形,平均粒径在28~36 nm。本文研究了Na⁺掺杂对Er³⁺:CaF₂透明陶瓷透过率、显微结构和光谱性能的影响。所有陶瓷样品在波长1 000 nm处的透过率均高于84%。结果表明,在Er³⁺:CaF₂透明陶瓷中引入Na⁺后,形成了电荷中和的Er³⁺-Na⁺结构,阻止了Er³⁺的团簇。通过调节Na⁺的浓度可以调控CaF₂透明陶瓷中Er³⁺在1.5和2.7 μm处的发射光谱,近红外1.5 μm处的荧光寿命随着Na⁺浓度的增加而增加,最高可达56.75 ms。

关键词: 铒掺杂氟化钙, Na⁺掺杂, 透明陶瓷, 透过率, 光谱调控, 荧光寿命

Abstract: Er³⁺, Na⁺ co-doped CaF₂ transparent ceramics with Er³⁺ dopant concentration of 3% and Na⁺ of 0%, 0.5%, 1.0%, 1.5% and 2.0% were fabricated by the vacuum hot pressing method with 16 mm in diameter and 3 mm in thickness. The average grain size of the obtained Er, Na:CaF₂ powders varied from 28 nm to 36 nm with the shape of sphere. The effects of Na⁺ doping on the transmittance, microstructure and spectral properties of Er³⁺:CaF₂ transparent ceramics were investigated. The transmittance of all the obtained ceramic samples is above 84% in the wavelength of 1 000 nm. The results show that after introducing Na⁺ into Er³⁺:CaF₂ transparent ceramics, charge-neutralized Er³⁺-Na⁺ structure formed which prevent Er³⁺ from clustering. The emission spectra of Er³⁺ in CaF₂ transparent ceramics at around 1.5 and 2.7 μm could be modulated by adjusting the concentration of Na⁺ and the near-infrared fluorescence lifetime at around 1.5 μm increase with the increasing of Na⁺ concentration, reaching a maximum of 56.75 ms.

Key words: Er³⁺:CaF₂, Na⁺ doping, transparent ceramics, transmittance, spectroscopy modulation, fluorescence lifetime

中图分类号:

TQ174

甘世雁, 梅炳初, 李威威. Er,Na:CaF₂透明陶瓷的制备与光谱性能研究[J]. 人工晶体学报, 2024, 53(12): 2059-2065.

GAN Shiyan, MEI Bingchu, LI Weiwei. Preparation and Spectral Properties of Er, Na:CaF₂ Transparent Ceramics[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(12): 2059-2065.

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Er,Na:CaF₂透明陶瓷的制备与光谱性能研究

Preparation and Spectral Properties of Er, Na:CaF₂ Transparent Ceramics

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