合成方法和配位剂对三掺杂Nd3+、Yb3+和Tm3+正钒酸钇的结构、形貌和发光效率的影响

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.583

María Rapp , Elisa Ortiz-Rivero , Josefa Isasi , Mauricio Alcolea Palafox

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引用次数: 0

摘要

基于镧系离子的新型红外激发荧光纳米材料的研究对生物医学、光子学、光电等领域的新技术发展至关重要。本文主要研究了新型正钒酸盐Y0.9Nd0.02Tm0.03Yb0.05VO4和Y0.9Nd0.02Tm0.05Yb0.03VO4样品的结构和形态。分析了它们的光学性质，包括评价了980 nm和808 nm红外激发下的上转换（UC）和下转换（DS）机制。分别采用溶胶-凝胶法和水热法在尿素和柠檬酸（CA）或马来酸（MA）的作用下合成了样品。这些样品与正硅酸四乙酯（TEOS）反应得到二氧化硅包覆样品。x射线衍射（XRD）分析证实其具有四方对称相容的锆石型结构。FTIR光谱显示了与VO4 - 3 -基团的几种振动模式相对应的条带和二氧化硅在teos处理样品中的存在。透射电镜图像表明，合成方法和CA或MA的加入对颗粒的团聚、形状和形貌都有影响。红外辐射激发后样品的光致发光（PL）研究提供了DS和UC过程中能量传递机制的详细描述。这些过程与用于获得它们的合成方法和所添加的螯合剂有关。808 nm激发产生的DS过程和PL光谱具有与Nd3+和Yb3+离子的电子跃迁相对应的明亮发射带，而808和980 nm激发产生的UC过程和PL光谱具有Tm3+离子的强烈蓝色，红色和nir - 1发射带，以及Nd3+离子的绿色和红色发射带。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Impact of synthesis methods and coordination agents on the structure, morphology, and luminescent efficiency of triple-doped Nd3+, Yb3+ and Tm3+ yttrium orthovanadate

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Impact of synthesis methods and coordination agents on the structure, morphology, and luminescent efficiency of triple-doped Nd3+, Yb3+ and Tm3+ yttrium orthovanadate

The research and study of novel fluorescent nanomaterials based on lanthanide ions that can be excited by infrared radiation is essential for the development of new technologies in the biomedicine, photonics, and optoelectronics fields. The present work focuses on the structural and morphological study of new orthovanadate Y_0.9Nd_0.02Tm_0.03Yb_0.05VO₄ and Y_0.9Nd_0.02Tm_0.05Yb_0.03VO₄ samples. Their optical properties were also analyzed, including the evaluation of up-conversion (UC) and down-conversion (DS) mechanisms under infrared excitation at 980 nm and 808 nm. The samples were synthesized using both the sol-gel method and hydrothermal synthesis with urea and citric acid (CA) or maleic acid (MA) addition. These samples were reacted with tetraethyl orthosilicate (TEOS) to obtain silica-coated samples. X-ray diffraction (XRD) analysis confirmed the tetragonal symmetry compatible with a zircon-type structure of the diffraction pattern. FTIR spectra revealed bands corresponding to the several vibrational modes of VO₄ ³⁻ groups and the presence of silica in the TEOS-treated samples. The synthesis method and the addition of CA or MA influenced the agglomeration, shape and morphology of the particles, as evidenced by transmission electron microscopy images. Photoluminescence (PL) studies of investigated samples after being excited with infrared radiation provided a detailed description of the energy transfer mechanisms involved in the DS and UC processes. These processes are related to the synthesis method used to obtain them and to the chelating agents added. Excitation of the samples at 808 nm generates DS processes and PL spectra with bright emission bands corresponding to electronic transitions of the Nd³⁺ and Yb³⁺ ions, while excitation at 808 and 980 nm gives rise to UC processes and PL spectra showing intense blue, red and NIR-I emission bands of Tm³⁺ ions, along with green and red emissions of Nd³⁺ ions.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.