Upconversion luminescence of pyrochlore structured (A2B2O7) phosphors

被引：0
作者：
Kumar, B.V. Naveen [1 ,2 ]
Swart, H.C. [1 ]
Kroon, R.E. [1 ]
机构：
[1] Department of Physics, University of the Free State, Bloemfontein
[2] Department of Physics, Shri Vishnu Engineering College for Women (A), A.P, Bhimavaram
来源：
Optical Materials: X | 2024年 / 24卷
基金：
新加坡国家研究基金会;
关键词：
A[!sub]2[!/sub]B[!sub]2[!/sub]O[!sub]7[!/sub; Pyrochlore; Rare earth ions; Upconversion;
D O I：
10.1016/j.omx.2024.100355
中图分类号：
学科分类号：
摘要：
The pyrochlore-structured (A2B2O7) compounds have emerged as a focal point in contemporary research and materials science, captivating attention for their intriguing properties such as photoluminescence, superconductivity, ionic mobility, and potential applications in high-temperature barrier coatings. Their potential application in up- or down-conversion photoluminescence further positions them for integration into a myriad of optoelectronic and sensing devices. Building on extensive prior research, this review delves into the upconversion (UC) luminescence properties of numerous pyrochlore-structured host materials (titanates, zirconates, hafnates, and ytterbium pyrochlores), specifically those doped with rare earth ions. While these materials may share similar chemical and structural characteristics, their luminescent capabilities exhibit significant variation upon rare earth ion doping. The phase transitions of various pyrochlore-structured compounds with respect to cation ratio, the relationship between crystal structure, doping concentrations, and UC luminescent properties in pyrochlore-structured compounds are summarized in detail. Through controlled doping strategies and structural adjustments, researchers have been able to tailor the luminescence properties of pyrochlore structured compounds to meet specific application requirements. The intricate exploration of the UC luminescence properties of pyrochlore-structured compounds, especially when doped with rare earth ions, showcases the rich potential for these materials in a wide array of applications across various fields, from advanced sensing technologies to innovative optoelectronic devices, paving the way for exciting advancements in materials science and beyond. © 2024 The Author(s)
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