Crystal Structure and Photoluminescence Properties of Ca₃(PO₄)₂:Eu³⁺ Phosphors With High Emission Efficiency.

IF 3.2 4区化学 Q2 CHEMISTRY, ANALYTICAL

Luminescence Pub Date : 2025-01-01 DOI:10.1002/bio.70083

K Park, D H Kim, J W Pi, S Y Gwon, E C Jeon, J S Kim

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引用次数: 0

Abstract

The influence of Eu³⁺ concentration on the crystal structure and photoluminescence (PL) properties of Ca_3-x(PO₄)₂:xEu³⁺ (0.06 ≤ x ≤ 0.10) phosphors is systematically investigated using X-ray diffraction (XRD) Rietveld refinement, scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, UV-visible spectroscopy, and PL spectroscopy. The prepared phosphors exhibit a single rhombohedral phase with the space group R3c. The constituent ions occupy various crystallographic sites, including Ca(1-5), Eu(1-3), P(1-3), and O(1-10) sites. Under 397-nm excitation, the emission spectra show distinct emission peaks between 525 and 725 nm, corresponding to the ⁵D₁ → ⁷F_j (j = 1 and 2) and ⁵D₀ → ⁷F_j (j = 1, 2, 3, and 4) transitions of Eu³⁺ ions. The concentration quenching observed in the phosphors is attributed to electric multipolar interactions. Among the prepared phosphors, Ca_2.92(PO₄)₂:0.08Eu³⁺ phosphor shows the highest emission efficiency and excellent color performance. These results demonstrate that Ca_3-x(PO₄)₂:xEu³⁺ phosphors have significant potential as red-emitting materials for white light-emitting diode (WLED) applications.

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来源期刊

Luminescence 生物-生化与分子生物学

CiteScore

5.10

自引率

13.80%

发文量

248

审稿时长

3.5 months

期刊介绍： Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.