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10.3390/molecules30234562
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Synthesis and Luminescent Properties of Dy3+-Activated Yellow Phosphors with Anomalous Thermal Quenching for w-LEDs

by
Anlin Zhang
1,2,
Huapeng Sun
3,
Xiang Li
1 and
Bin Deng
1,2,*
1
School of Chemistry and Environmental Science, Xiangnan University, Chenzhou 423043, China
2
Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application, Xiangnan University, Chenzhou 423043, China
3
Chenjiang Laboratory, School of New Energy, Chenzhou Vocational Technical College, Chenzhou 423000, China
*
Author to whom correspondence should be addressed.
Molecules 2025, 30(23), 4562; https://doi.org/10.3390/molecules30234562
Submission received: 31 July 2025 / Revised: 7 November 2025 / Accepted: 24 November 2025 / Published: 26 November 2025
(This article belongs to the Special Issue Nano and Micro Materials in Green Chemistry)
Versions Notes

Abstract

Thermal stability is a crucial factor in evaluating phosphors and determining whether they can be utilized in white light emitting diodes (w-LEDs). In this work, a series of Sr6LuAl(BO3)6: Dy3+ (SLAB:Dy3+) phosphors was synthesized via high-temperature solid-state reaction. The synthesized SLAB:Dy3+ phosphor exhibits narrow-band emission in the range of 450–700 nm under 348 nm UV excitation. The strongest emission peak is located at 577 nm and is primarily due to 4F9/2-6H13/2 electron transitions. The optimal doping concentration of Dy3+ in the synthesized phosphor was 15 mol%. The integrated emission intensity of the synthesized phosphor at 480 k is 97.84% of that at 300 k, with excellent thermal stability. The activation energy Eg = 0.62 eV. Meanwhile, the Commission International de l’Eclairage (CIE) coordinates of the prepared w-LEDs were (0.309,0.363) with a correlated color temperature (CCT) of 6497 K. Preliminary experimental findings suggest that SLAB:Dy3+ phosphors hold promise for utilization in w-LEDs applications.
Keywords: Dy3+; luminescence; w-LEDs Dy3+; luminescence; w-LEDs

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MDPI and ACS Style

Zhang, A.; Sun, H.; Li, X.; Deng, B. Synthesis and Luminescent Properties of Dy3+-Activated Yellow Phosphors with Anomalous Thermal Quenching for w-LEDs. Molecules 2025, 30, 4562. https://doi.org/10.3390/molecules30234562

AMA Style

Zhang A, Sun H, Li X, Deng B. Synthesis and Luminescent Properties of Dy3+-Activated Yellow Phosphors with Anomalous Thermal Quenching for w-LEDs. Molecules. 2025; 30(23):4562. https://doi.org/10.3390/molecules30234562

Chicago/Turabian Style

Zhang, Anlin, Huapeng Sun, Xiang Li, and Bin Deng. 2025. "Synthesis and Luminescent Properties of Dy3+-Activated Yellow Phosphors with Anomalous Thermal Quenching for w-LEDs" Molecules 30, no. 23: 4562. https://doi.org/10.3390/molecules30234562

APA Style

Zhang, A., Sun, H., Li, X., & Deng, B. (2025). Synthesis and Luminescent Properties of Dy3+-Activated Yellow Phosphors with Anomalous Thermal Quenching for w-LEDs. Molecules, 30(23), 4562. https://doi.org/10.3390/molecules30234562

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