Synthesis and luminescence properties of deep-red-emitting Sc1.6Al0.4W3O12: Cr3+ phosphor for plant growth lighting

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI:10.1016/j.jlumin.2025.121697

Yiqi Yu , Liming Zhang , Liuzhen Feng , Renfu Li , Zhiwen Ao , Jinmin Zhang , Ying Yang , Jinsheng Liao

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引用次数: 0

Abstract

Cr³⁺-doped deep-red phosphors are ideal for plant growth lighting, yet achieving high thermal stability in tungstate hosts remains challenging. This study demonstrates that co-doping Al³⁺ and Cr³⁺ into the negative thermal expansion (NTE) material Sc₂(WO₄)₃ effectively strengthens the crystal field, leading to an intensified narrow-band deep-red emission from Cr³⁺. A series of Sc_1.6Al_0.4W₃O₁₂: Cr³⁺ deep-red phosphors were successfully synthesized via solid-state reaction. The optimized Sc_1.6Al_0.4W₃O₁₂:0.25 %Cr³⁺ phosphor exhibits ²E → ⁴A₂ emission of Cr³⁺ at 696 nm under 406 nm excitation, matching the P_FR phytochrome absorption. It retains 61.9 % of its room temperature (RT) luminescence intensity at 423 K, demonstrating superior thermal stability over analogues. The fabricated deep-red pc-LED, with its emission peak perfectly aligned with P_FR, confirms its potential for plant growth lighting.

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植物生长照明用深红色Sc1.6Al0.4W3O12: Cr3+荧光粉的合成及发光性能

Cr3+掺杂的深红色荧光粉是植物生长照明的理想选择，但在钨酸盐基质中实现高热稳定性仍然具有挑战性。本研究表明，在负热膨胀（NTE）材料Sc2(WO4)3中共掺杂Al3+和Cr3+，有效增强了晶体场，导致Cr3+窄带深红色发射增强。通过固相反应成功合成了一系列Sc1.6Al0.4W3O12: Cr3+深红色荧光粉。优化后的sc1.6 al0.4 w3012: 0.25% Cr3+荧光粉在406 nm激发下，在696 nm处表现出2E→4A2的Cr3+发射，与PFR光敏色素吸收相匹配。它在423 K时保持了61.9%的室温（RT）发光强度，表现出比类似物更好的热稳定性。制造的深红色pc-LED，其发射峰值与PFR完美对齐，证实了其用于植物生长照明的潜力。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.