Thermally Stable Broadband Cr3+-Doped RbAl3P6O20 Phosphor for Near-Infrared Spectroscopy Applications

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-02-12 DOI:10.1021/acs.inorgchem.4c05081

Xiaozhong Wu, Decai Huang, Qiuming Lin, Lei Han, Weixiong You, Jing Zhu, Xinyu Ye

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Abstract

The research on near-infrared (NIR) phosphors has become a trending topic, as their optical properties directly impact the performance of the NIR phosphor-converted light-emitting diode (pc-LED). NIR pc-LED has emerged as a multifunctional light source across various fields due to its unique advantages of high penetration and invisibility. Herein, a peculiar broadband NIR-emitting phosphor is presented, RbAl₃P₆O₂₀: Cr³⁺ (RAPO: Cr³⁺), with an NIR emission range from 650 to 1000 nm and peaking at ∼785 nm with a full-width at half-maximum (fwhm) of ∼1900 cm^–1. Gaussian fitting analysis reveals that broadband emission originates from Cr³⁺, occupying two different octahedral sites in the host. The optimized phosphor RAPO: 0.08Cr³⁺ exhibits an internal quantum efficiency of 60% and excellent thermal stability (90% at 423 K). The application of pc-LED devices was evaluated by assembling a RAPO: 0.08Cr³⁺ phosphor with an InGaN-based LED (450 nm), achieving a remarkable NIR output power of 27.9 mW at 120 mA. The results demonstrate that RAPO: Cr³⁺ is an optimistic phosphor for NIR photoelectron (pc-LED) light sources.

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近红外光谱应用的热稳定宽带Cr3+掺杂RbAl3P6O20荧光粉

近红外（NIR）荧光粉的光学性能直接影响到近红外（NIR）荧光粉的性能，因此其研究已成为一个热门话题。近红外pc-LED以其独特的高穿透性和不可见性优势，已成为应用于各个领域的多功能光源。本文提出了一种特殊的宽带近红外发光荧光粉，RbAl3P6O20: Cr3+ (RAPO: Cr3+)，其近红外发射范围为650至1000 nm，峰值为785 nm，半峰宽（fwhm）为1900 cm-1。高斯拟合分析表明，宽带发射来源于Cr3+，占据宿主体内两个不同的八面体位点。优化后的荧光粉RAPO: 0.08Cr3+具有60%的内部量子效率和优异的热稳定性（在423 K时达到90%）。通过将RAPO: 0.08Cr3+荧光粉与ingan基LED （450 nm）组装在一起，评估了pc-LED器件的应用，在120 mA时获得了27.9 mW的近红外输出功率。结果表明，RAPO: Cr3+是一种理想的近红外光电子（pc-LED）光源荧光粉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.