超宽带NIR-Ⅰ/ ii -发射Ca4HfGe3O12:Cr³+，Yb³+石榴石荧光粉用于有机材料分析

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-03-23 DOI:10.1016/j.jallcom.2025.179966

Linlin Wang, Yan-gai Liu, Tonglu Sun, Ziyao Wang, JuYu Yang, Ruiyu Mi, Lefu Mei, Hao Ding

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引用次数: 0

摘要

宽带近红外（NIR）磷转换发光二极管（pc-LED）是一种有前途的下一代智能近红外光谱光源。然而，Cr3+激发的近红外荧光粉仅覆盖NIR-Ⅰ区域（900 nm之前），限制了其应用。包括高效的NIR-Ⅰ和NIR-Ⅱ发射材料的发展对于推进NIR照明和相关技术至关重要。本研究通过将Cr³+ -Yb³+离子对掺入Ca4HfGe3O12中，开发了一种宽带近红外荧光粉。当受468 nm蓝光激发时，Ca4HfGe3O12:Cr³、Yb³+荧光粉在700-1200 nm范围内发光，峰值在1010 nm处，峰宽为253 nm。Cr3+-Yb3+能量转移（ET）提高了荧光粉的发光性能、热稳定性和内部量子效率（IQE）。此外，近红外LED原型展示了其在夜视照明、无损检测和有机材料分析方面的应用潜力。这项研究提出了一种具有巨大应用潜力的超宽带近红外材料，为下一代紧凑型近红外光源提供了一种新的选择。

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Ultra-broadband NIR-Ⅰ/II-emitting Ca4HfGe3O12:Cr³⁺, Yb³⁺ Garnet Phosphors for organic material analysis

Broadband near-infrared (NIR) phosphor-converted light emitting diodes (pc-LED) are a promising next-generation light source for smart NIR spectroscopy. However, Cr³⁺-excited NIR phosphors only cover the NIR-Ⅰ region (before 900 nm), limiting their applications. The development of including efficient NIR-Ⅰ and NIR-Ⅱ emission materials is crucial for advancing NIR lighting and related technologies. This study develops a broadband NIR phosphor by incorporating Cr³⁺-Yb³⁺ ion pairs into Ca₄HfGe₃O₁₂. When excited by 468 nm blue light, the Ca₄HfGe₃O₁₂:Cr³⁺, Yb³⁺ phosphor emits broadly from 700-1200 nm, peaking at 1010 nm with a FWHM of 253 nm. The Cr³⁺-Yb³⁺ energy transfer (ET) enhances the luminescence properties, thermal stability, and the phosphor's internal quantum efficiency (IQE). Furthermore, the NIR LED prototype demonstrates its potential for applications in night vision lighting, nondestructive testing, and organic material analysis. This study presents an ultra-broadband NIR material with great application potential, offering a novel option for next-generation compact NIR sources.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.