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| Gd3+-doped Sc2W3O12∶Eu3+ red phosphor: Preparation and luminescence performance |
| Author Name | Affiliation | E-mail | | ZHAO Yan | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | | | WANG Jiaxu | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | | | LI Zhonghu | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | | | LIU Changli | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | | | ZHAO Xingsheng | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | | | ZHOU Hengwei | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | zhw33221@163.com | | JIANG Xiaokang | Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China | jiangxiaokang@163.com |
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| Abstract: A series of red-emitting phosphors, specifically Eu3+-doped Sc2W3O12, were synthesized using the sol-gel method. Furthermore, the symmetry of the Sc2W3O12 matrix crystal structure was diminished through Gd3+ doping, thereby enhancing the luminescence intensity of the phosphor. The findings indicate that incorporating Gd3+ did not alter the intrinsic crystal structure of Sc2W3O12. As the doping concentration of Gd3+ increased, the lattice distortion became more pronounced, resulting in a significant enhancement of the luminescence intensity corresponding to the 5D 0→7F2 transition (612 nm) from Eu3+. The optimal doping concentration of Gd3+ was determined to be 0.25, yielding a luminescence intensity that was 1.95 times greater than that of solely Eu3+-doped samples. Additionally, the color coordinates (0.613 4, 0.350 3) were near the standard red color coordinates (0.670, 0.330). Furthermore, the fluorescent powder exhibited notable thermal stability; specifically, when the temperature reached 498 K, the fluorescence intensity of the sample with a Gd3+ ion concentration of 0.25 was enhanced compared to that of undoped Gd3+ ions, achieving 53% of its value at room temperature. Additionally, its activation energy was measured at 0.104 1 eV. |
| Keywords: sol-gel method Sc2W3O12 red fluorescent powder Gd3+-doped |
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| ZHAO Yan,WANG Jiaxu,LI Zhonghu,LIU Changli,ZHAO Xingsheng,ZHOU Hengwei,JIANG Xiaokang.Gd3+-doped Sc2W3O12∶Eu3+ red phosphor: Preparation and luminescence performance[J].Chinese Journal of Inorganic Chemistry,2025,41(3):461-468. |
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