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

IF 4.3 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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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.