掺杂 Pr3+ 的 ACaF3（A = K、Rb、Cs）荧光粉的蓝紫外上转换特性

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-09-30 DOI:10.1016/j.scriptamat.2024.116395

Nadiia Rebrova , Alexander Grippa , Patrycja Zdeb , Przemysław J. Dereń

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引用次数: 0

摘要

能够将可见光转化为紫外线 C（UVC）区域的材料是抗菌技术和光催化应用的理想候选材料。在这项工作中，利用固态反应合成了有效的紫外线上转换荧光粉 ACaF3:Pr3+（A = K、Rb、Cs）。在 444 nm 激光激发下，获得了 230 至 315 nm 范围内的上转换发射。上转换发光与泵浦功率、Pr3+ 离子浓度的关系以及上转换发光的衰减曲线，使人们对上转换的主要机制有了更深入的了解。在所获得的氟包荧光石中，铷成分显示出最强烈的发光。此外，与之前研究过的参考材料 LiYF4:1 %Pr3+ 相比，ACaF3:1 %Pr3+ 的上转换发射率提高了数倍，这表明氟包玉有可能用于表面净化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Blue to UV upconversion properties of Pr3+ doped ACaF3 (A = K, Rb, Cs) phosphors

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Blue to UV upconversion properties of Pr3+ doped ACaF3 (A = K, Rb, Cs) phosphors

Materials capable of converting visible light into the ultraviolet C (UVC) region are promising candidates for antimicrobial technology and photocatalytic applications. In this work, the effective UVC upconversion phosphors ACaF₃:Pr³⁺ (A = K, Rb, Cs) were synthesized using solid state reactions. Upconverted emissions in the range from 230 to 315 nm were obtained with 444 nm laser excitation. The dependence of upconverted luminescence on pump power, the concentration of Pr³⁺ ions, and the decay profiles of upconverted luminescence provide insights into the primary mechanisms responsible for upconversion. Among the obtained fluoroperovskites, the rubidium composition showed the most intense luminescence. Additionally, ACaF₃:1 %Pr³⁺ exhibits a manifold increase in upconversion emission compared to the previously studied reference material LiYF₄:1 %Pr³⁺, indicating the potential use of fluoroperovskites for surface decontamination.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.