Citation: Xinglong ZHANG, Zhonghui LI, Jifeng BAN, Xingsheng ZHAO, Changli LIU, Xiaokang JIANG, Hengwei ZHOU. Color-tunable luminescence and energy transfer in Cs₂NaGdCl₆ via a Sb³⁺/Sm³⁺ co-doping strategy[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(6): 1237-1246. doi: 10.11862/CJIC.20250322 shu

Color-tunable luminescence and energy transfer in Cs₂NaGdCl₆ via a Sb³⁺/Sm³⁺ co-doping strategy

1.
Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China
2.
Yili Engineering Research Center for Green Silicon-based Materials, Yining, Xinjiang 835000, China

Corresponding author: Xiaokang JIANG, jiangxiaokang@163.com Hengwei ZHOU, zhw33221@163.com
Received Date: 21 October 2025
Revised Date: 15 April 2026

Figures(8)

A strategy of co-doping with Sm³⁺ and Sb³⁺ was proposed, achieving effective modulation of the luminescence color from blue to white in Cs₂NaGdCl₆ phosphors. A series of Cs₂NaGd_0.985-xCl₆∶0.015Sb³⁺, xSm³⁺ (x=0-0.130) phosphors were synthesized via the microwave solid-state method. Phase analysis confirms that all samples maintain a pure double perovskite structure, with Sm³⁺ successfully incorporated into the lattice. Photoluminescence spectrum analysis revealed that under 336 nm excitation, the material simultaneously produced broad blue emission centered at 460 nm originating from self-trapped excitons (STEs) and characteristic emissions (568, 604, 653 nm) from Sm³⁺. Efficient energy transfer from STEs to Sm³⁺ was confirmed in this system, with an efficiency of 13.34% (x=0.070). When the Sm³⁺ doping concentration was 0.070, the phosphor exhibited optimal performance: a photoluminescence quantum yield (PLQY) of 35.49%, good thermal stability (maintaining 68.6% of its room temperature intensity at 423 K), and a thermal activation energy of 163 meV. Furthermore, by adjusting the Sm³⁺ concentration, a continuously controllable variation of the luminescence color from the blue region to the white region in the CIE chromaticity diagram was achieved.
- double perovskite,
- Sb³⁺/Sm³⁺ co-doping,
- energy transfer,
- color tunable
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Color-tunable luminescence and energy transfer in Cs2NaGdCl6 via a Sb3+/Sm3+ co-doping strategy

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通讯作者: 陈斌, bchen63@163.com

Color-tunable luminescence and energy transfer in Cs₂NaGdCl₆ via a Sb³⁺/Sm³⁺ co-doping strategy