用于近红外光源的铬激活荧光粉的研究进展,Laser & Photonics Reviews

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用于近红外光源的铬激活荧光粉的研究进展
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-08-07 , DOI: 10.1002/lpor.202200380
Fangyi Zhao ₁ , Zhen Song ₁ , Quanlin Liu ₁

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Cr ³⁺ /Cr ⁴⁺激活的近红外(NIR)发光材料由于其发射波长可调，在植物生长、食品分析、生物医学成像、夜视等方面有着广泛的应用而受到广泛关注。通过在各种无机基质中引入Cr ³⁺ /Cr ⁴⁺离子，开发出了许多优良的近红外材料。本文结合Tanabe-Sugano能级图和构型坐标模型讨论了晶场对Cr ³⁺ /Cr ^{4+发光的影响。}^{Cr 3+} /Cr ⁴⁺的研究进展然后概述了掺杂的 NIR 发光材料，包括根据具有八面体、四面体和其他配位类型的结构模型设计的荧光粉。总结了200多种Cr ³⁺ /Cr ⁴⁺掺杂材料的发光特性。特别是，列出了调整发射波长、拓宽发射带、提高 NIR 发光效率和提高热稳定性的几种策略。^{最后，介绍了Cr 3+} /Cr ⁴⁺掺杂近红外发光材料研究的现状和未来展望。这篇综述不仅有助于更深入地了解 Cr ³⁺ /Cr ⁴⁺发光机理以及当前铬掺杂发光材料的研究进展，以开发更多性能更好的Cr ³⁺ /Cr ⁴⁺激活近红外发光材料，探索更多应用。

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Advances in Chromium-Activated Phosphors for Near-Infrared Light Sources

Cr³⁺/Cr⁴⁺-activated near-infrared (NIR) luminescent materials have attracted extensive attention owing to their tunable emission wavelength and widespread applications in plant growth, food analysis, biomedical imaging, night vision, and so on. Plenty of excellent NIR materials are developed by introducing Cr³⁺/Cr⁴⁺ ion to various inorganic hosts. Herein, the effect of crystal field on Cr³⁺/Cr⁴⁺ luminescence by combining the Tanabe–Sugano energy level diagram and configuration coordinate model is discussed. Research progress of Cr³⁺/Cr⁴⁺-doped NIR luminescent materials, including the phosphors designed from structural models with octahedral, tetrahedral, and other coordination types, is then outlined. The luminescence properties of more than 200 kinds of Cr³⁺/Cr⁴⁺-doped materials are summarized. In particular, several strategies for tuning emission wavelength, broadening emission band, enhancing NIR luminescence efficiency, and improving thermal stability, are listed. Finally, the current challenges and future prospects in the research of Cr³⁺/Cr⁴⁺-doped NIR luminescent materials are presented. This review will contribute to a deeper understanding of not only Cr³⁺/Cr⁴⁺ luminescence mechanism but also the current research progress of chromium-doped luminescent materials, so as to develop more Cr³⁺/Cr⁴⁺-activated NIR luminescent materials with better performance and explore more applications.

更新日期：2022-08-07

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