Eu3+掺杂LiCa2Mg2V3O12荧光粉的双模非接触光学测温和温度相关Judd-Ofelt分析

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-09-15 DOI:10.1016/j.mseb.2025.118761

R. Raji , P.S. Anjana , N. Gopakumar

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引用次数: 0

摘要

采用固相反应制备了Eu3+掺杂的LiCa2Mg2V3O12多功能荧光粉。在338 nm处，Eu3+的5D0→7F1、5D0→7F2（609 & 630）和5D0→7F3跃迁发生在513 nm处，发光峰集中在590、609、630和653nm处。采用荧光强度比（FIR）法，选择5D0→7F1/ VO43−、5D0→7F2/ VO43−和5D0→7F3/ VO43−的光谱模式，进行了非接触式光学测温研究。光谱模式5D0→7F2/ VO43−显示出较高的绝对灵敏度和相对灵敏度值。荧光粉的热致变色特性阐明了其色度位移的提高及其在热致变色显示器中的应用前景。在80 ~ 500 K的温度范围内，对Judd-Ofelt和辐射参数的温度依赖性进行了评价，体现了荧光粉在高温环境下的固体激光应用。

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Dual mode non-contact optical thermometry and temperature-dependent Judd-Ofelt analysis of Eu3+ doped LiCa2Mg2V3O12 phosphors

The multifunctional Eu³⁺ doped LiCa₂Mg₂V₃O₁₂ phosphors have been elaborated via solid phase reaction. The photoluminescence spectra evaluated at 338 nm show broad band emission centred at 513 nm and narrow peaks at 590, 609, 630 and 653 nm corresponding to the ⁵D₀ → ⁷F₁, ⁵D₀ → ⁷F₂ (609 & 630), and ⁵D₀ → ⁷F₃ transitions of Eu³⁺. The non-contact optical thermometry studies have been done using Fluorescence Intensity Ratio (FIR) method choosing spectral modes ⁵D₀ → ⁷F₁/ VO₄³⁻, ⁵D₀ → ⁷F₂/ VO₄³⁻ and ⁵D₀ → ⁷F₃/ VO₄³⁻. The spectral mode ⁵D₀ → ⁷F₂/ VO₄³⁻ shows elevated absolute sensitivity and relative sensitivity values. The thermochromic properties of phosphor elucidate the elevated chromaticity shift and the possible application in thermochromic displays. The temperature dependent Judd-Ofelt and radiative parameters are evaluated for the temperature range 80–500 K, manifest the solid-state laser application of phosphor in high temperature environment.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.