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学者姓名：郭飞云
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Abstract ：
高效和热稳定的红色荧光粉能够有效改善荧光粉转换型白光发光二极管的性能.采用高温固相反应法制备了一系列新型的NaLaCaTeO6∶xEu3+荧光粉.在395 nm激发下,NaLaCaTeO6∶Eu3+样品呈现出Eu3+的特征跃迁峰.通过[Na+-La3+]取代[Ca2+-Ca2+]离子对的共取代策略,NaLaCaTeO6中 Eu3+的最佳掺杂浓度提高至60％(摩尔分数),该荧光粉的色纯度和内量子效率分别高达99.87％和67.6％.另外,该荧光粉的发光强度和热稳定性比取代前的Ca3TeO6∶0.2Eu3+样品也有明显提升,在420K时的发射强度仍保持在300K时的91.7％.所制备的白光LED显色指数Ra为80.6,CIE色度坐标为(0.3176,0.3340),表明所制备的NaLaCaTeO6∶0.6Eu3+红色荧光粉在固态照明中具有广泛的应用前景.
Keyword ：
共取代 共取代 发光 发光 热稳定性 热稳定性 荧光粉 荧光粉
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| GB/T 7714 | 赵兵 , 茹晶晶 , 郭飞云 et al. 共取代策略增强NaLaCaTeO6∶Eu3+的发光性能及在白光发光二极管中的应用 [J]. | 硅酸盐学报 , 2025 , 53 (2) : 257-266 . |
| MLA | 赵兵 et al. "共取代策略增强NaLaCaTeO6∶Eu3+的发光性能及在白光发光二极管中的应用" . | 硅酸盐学报 53 . 2 (2025) : 257-266 . |
| APA | 赵兵 , 茹晶晶 , 郭飞云 , 郭诗莹 . 共取代策略增强NaLaCaTeO6∶Eu3+的发光性能及在白光发光二极管中的应用 . | 硅酸盐学报 , 2025 , 53 (2) , 257-266 . |
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Abstract ：
Two novel phosphors LiBa4(1‒x)Eu4xTa3O12 (H-LBTO:xEu3+) and Li0.25Ba1‒xEuxTa0.75O3 (C-LBTO:xEu3+) were prepared successfully by a molten salt method. The transformation between these two structures was realized by changing the sintering temperature or changing the Eu3+ ions concentration, which was also demonstrated by the X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectra (DRS), and photoluminescence excitation (PLE) analyses. Both the sintering temperature and the Eu3+ ions doping concentration have significant impact on the formation of the crystal phase. All these phosphors sintered at 1023 K exhibit two major luminescence lines at 594 and 614 nm under near-UV light of 395 nm excitation, corresponding to Eu3+ ions typical transitions of 5D0→7F1 and 5D0→7F2. The optimum concentration of Eu3+ ions is 9 mol% for C-LBTO:xEu3+ samples and the quenching interaction type is the nearest-neighbor ion interaction. The thermal stability of the C-LBTO:0.09Eu3+ sample was investigated in detail and the device application further suggests that C-LBTO:0.09Eu3+ can be used as a red phosphor for near-UV excited w-LEDs in lighting. © 2023 Chinese Society of Rare Earths
Keyword ：
LED device LED device Phosphor Phosphor Rare earths Rare earths Tantalate Tantalate
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| GB/T 7714 | Zeng, F. , Ru, J. , Zhao, B. et al. Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application [J]. | Journal of Rare Earths , 2024 , 42 (8) : 1479-1488 . |
| MLA | Zeng, F. et al. "Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application" . | Journal of Rare Earths 42 . 8 (2024) : 1479-1488 . |
| APA | Zeng, F. , Ru, J. , Zhao, B. , Guo, F. , Chen, J. . Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application . | Journal of Rare Earths , 2024 , 42 (8) , 1479-1488 . |
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Abstract ：
Two novel phosphors LiBa4(1-x)Eu4xTa3O12(H-LBTO∶xEu3+)and Li0.25Ba1-xEuxTa0.75O3(C-LBTO∶xEu3+)were prepared successfully by a molten salt method.The transformation between these two structures was realized by changing the sintering temperature or changing the Eu3+ions concentration,which was also demonstrated by the X-ray diffraction(XRD),scanning electron microscopy(SEM),diffuse reflec-tance spectra(DRS),and photoluminescence excitation(PLE)analyses.Both the sintering temperature and the Eu3+ions doping concentration have significant impact on the formation of the crystal phase.All these phosphors sintered at 1023 K exhibit two major luminescence lines at 594 and 614 nm under near-UV light of 395 nm excitation,corresponding to Eu3+ions typical transitions of 5D0→7F1 and 5D0→7F2.The optimum concentration of Eu3+ions is 9 mol％for C-LBTO:xEu3+samples and the quenching interaction type is the nearest-neighbor ion interaction.The thermal stability of the C-LBTO:0.09Eu3+sample was investigated in detail and the device application further suggests that C-LBTO:0.09Eu3+can be used as a red phosphor for near-UV excited w-LEDs in lighting.
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| GB/T 7714 | Fan Zeng , Jingjing Ru , Bing Zhao et al. Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application [J]. | 稀土学报（英文版） , 2024 , 42 (8) : 1479-1488 . |
| MLA | Fan Zeng et al. "Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application" . | 稀土学报（英文版） 42 . 8 (2024) : 1479-1488 . |
| APA | Fan Zeng , Jingjing Ru , Bing Zhao , Feiyun Guo , Jianzhong Chen . Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application . | 稀土学报（英文版） , 2024 , 42 (8) , 1479-1488 . |
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A set of colour tuning K2Ba(MoO4)(2): Dy3+/Eu3+ (KBM: Dy3+/Eu3+) phosphors were fabricated by solid-state method. The phase purity of as-prepared materials was validated by XRD and DRS analyses. The KBM: 0.03Dy(3+) sample exhibits two major luminescence lines at 481 and 572 nm when excited by 351 nm light, corresponding to Dy3+ ions' typical transitions of F-4(9/2) -> H-6(J) (J = 15/2, 13/2). By introducing Eu3+ ions into KBM: 0.03Dy(3+) phosphor, the ET from Dy3+ to Eu3+ ions arises, leading to colour tuning from green via yellowish green to pink with changing Eu3+ ions' concentration, along with the lowest CCT of KBM: 0.03Dy(3+)/0.03Eu(3+) sample. It can be verified by PLE and PL spectra analysis combined with the decay times of KBM: 0.03Dy(3+)/yEu(3+) samples. The energy transfer mechanism is also expounded. Meanwhile, the emission intensities at 423 K still maintain 72.8% for Dy3+ ions and 91.2% for Eu3+ ions relative to 303 K of the KBM: 0.03Dy(3+)/0.03Eu(3+) sample, displaying its brilliant thermal stability. All these results connote that KBM: Dy3+/Eu3+ phosphors are prospected to be used for the near-UV excited white light-emitting diodes.
Keyword ：
energy transfer energy transfer Phosphor Phosphor thermal stable thermal stable
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| GB/T 7714 | Ru, Jingjing , Zhao, Bing , Zeng, Fan et al. Colour tuning via energy transfer of K2Ba(MoO4)2: Dy3+/Eu3+ phosphors with thermal-stable property [J]. | BULLETIN OF MATERIALS SCIENCE , 2024 , 47 (2) . |
| MLA | Ru, Jingjing et al. "Colour tuning via energy transfer of K2Ba(MoO4)2: Dy3+/Eu3+ phosphors with thermal-stable property" . | BULLETIN OF MATERIALS SCIENCE 47 . 2 (2024) . |
| APA | Ru, Jingjing , Zhao, Bing , Zeng, Fan , Guo, Feiyun . Colour tuning via energy transfer of K2Ba(MoO4)2: Dy3+/Eu3+ phosphors with thermal-stable property . | BULLETIN OF MATERIALS SCIENCE , 2024 , 47 (2) . |
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A set of novel red phosphors Li8CaLa2Ta2O13:xEu3+ (LCLTO:xEu3+) were successfully prepared using a solid-state reaction method. The properties of the prepared samples, including phase purity, elemental composition, and morphology, were systematically investigated using X-ray diffraction, scanning electron microscopy, and diffuse reflectance spectroscopy analyses. The 610 nm maximum emission peak is attributed to the 5D0→7F2 transition of Eu3+ ion under 394 nm irradiation. Among all the LCLTO:xEu3+ phosphors, LCLTO:0.6Eu3+ showed the strongest emission intensity because of the concentration quenching effect of the electric dipole–dipole interaction among the Eu3+ ions, which was also demonstrated by the decay curves. Remarkably, the emission intensity of the optimal LCLTO:0.6Eu3+ phosphor, which exhibited a high internal quantum efficiency of 49.30% and excellent color purity of 96.79%, was approximately 2.29 times higher than that of commercial Y2O3:Eu3+ red phosphors. The thermal stability of the LCLTO:0.6Eu3+ sample with good color stability was meticulously investigated. The fabricated white-light-emitting diode (WLED) exhibited a superior color-rendering index of Ra = 82 and chromaticity coordinates of (0.3260, 0.3639), suggesting that LCLTO:0.6Eu3+ has potential applicability in developing efficient and high-quality WLEDs. Moreover, the prepared LCLTO:0.6Eu3+/PDMS composite film demonstrated exceptional flexural resistance and chemical stability, indicating considerable promise for practical anti-counterfeiting applications. © 2023
Keyword ：
LED device LED device Luminescence Luminescence Phosphor Phosphor Tantalate Tantalate
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| GB/T 7714 | Ru, J. , Zeng, F. , Zhao, B. et al. Development of red phosphor Li8CaLa2Ta2O13:Eu3+ for WLEDs and anti-counterfeiting applications [J]. | ChemPhysMater , 2024 , 3 (2) : 194-203 . |
| MLA | Ru, J. et al. "Development of red phosphor Li8CaLa2Ta2O13:Eu3+ for WLEDs and anti-counterfeiting applications" . | ChemPhysMater 3 . 2 (2024) : 194-203 . |
| APA | Ru, J. , Zeng, F. , Zhao, B. , Ye, C. , Zhong, T. , Guo, F. et al. Development of red phosphor Li8CaLa2Ta2O13:Eu3+ for WLEDs and anti-counterfeiting applications . | ChemPhysMater , 2024 , 3 (2) , 194-203 . |
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A series of Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors were prepared by high-temperature solid-state method for dual-emission center optical thermometers and white light-emitting diode (WLED) device. By modulating the doping ratio of Bi3+/Eu3+ and utilizing the energy transfer from Bi3+ to Eu3+, the tunable color emission ranging from green to reddish-orange was realized. The designed CTO:0.04Bi3+/Eu3+ optical thermometers exhibit significant thermochromism, superior stability, and repeatability, with maximum sensitivities of Sa = 0.055 K−1 (at 510 K) and Sr = 1.298% K−1 (at 480 K) within the temperature range of 300−510 K, owing to the different thermal quenching behaviors between Bi3+ and Eu3+ ions. These features indicate the potential application prospects of the prepared samples in visualized thermometer or high-temperature safety marking. Furthermore, leveraging the excellent zero-thermal-quenching performance, outstanding acid/alkali resistance, and color stability of CTO:0.04Bi3+/0.16Eu3+ phosphor, a WLED device with a high Ra value of 95.3 has been realized through its combination with commercially available blue and green phosphors, thereby demonstrating the potential application of CTO:0.04Bi3+/0.16Eu3+ in near-UV pumped WLED devices. Graphical abstract: (Figure presented.) © The Author(s) 2024.
Keyword ：
Energy transfer Energy transfer Optical thermometry Optical thermometry Phosphor Phosphor WLEDs WLEDs Zero-thermal-quenching Zero-thermal-quenching
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| GB/T 7714 | Ru, J. , Zhao, B. , Zeng, F. et al. Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED [J]. | Frontiers of Optoelectronics , 2024 , 17 (1) . |
| MLA | Ru, J. et al. "Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED" . | Frontiers of Optoelectronics 17 . 1 (2024) . |
| APA | Ru, J. , Zhao, B. , Zeng, F. , Guo, F. , Liu, J. , Chen, J. . Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED . | Frontiers of Optoelectronics , 2024 , 17 (1) . |
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Two novel phosphors LiBa4(1-x)Eu4xTa3O12 (H-LBTO:xEu(3+)) and Li0.25Ba1-xEuxTa0.75O3 (C-LBTO:xEu(3+)) were prepared successfully by a molten salt method. The transformation between these two structures was realized by changing the sintering temperature or changing the Eu3+ ions concentration, which was also demonstrated by the X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectra (DRS), and photoluminescence excitation (PLE) analyses. Both the sintering temperature and the Eu3+ ions doping concentration have significant impact on the formation of the crystal phase. All these phosphors sintered at 1023 K exhibit two major luminescence lines at 594 and 614 nm under near-UV light of 395 nm excitation, corresponding to Eu3+ ions typical transitions of D-5(0)-> F-7(1) and D-5(0)-> F-7(2). The optimum concentration of Eu3+ ions is 9 mol% for C-LBTO:xEu(3+) samples and the quenching interaction type is the nearest-neighbor ion interaction. The thermal stability of the C-LBTO:0.09Eu(3+) sample was investigated in detail and the device application further suggests that C-LBTO:0.09Eu(3+) can be used as a red phosphor for near-UV excited w-LEDs in lighting. (c) 2023 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword ：
LED device LED device Phosphor Phosphor Rare earths Rare earths Tantalate Tantalate
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| GB/T 7714 | Zeng, Fan , Ru, Jingjing , Zhao, Bing et al. Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application [J]. | JOURNAL OF RARE EARTHS , 2024 , 42 (8) : 1479-1488 . |
| MLA | Zeng, Fan et al. "Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application" . | JOURNAL OF RARE EARTHS 42 . 8 (2024) : 1479-1488 . |
| APA | Zeng, Fan , Ru, Jingjing , Zhao, Bing , Guo, Feiyun , Chen, Jianzhong . Development of a novel Eu3+-doped tantalate red-emitting phosphor for w-LEDs application . | JOURNAL OF RARE EARTHS , 2024 , 42 (8) , 1479-1488 . |
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A series of Dy3+ doped and Dy3+, Eu3+ co-doped NaCaTiTaO6 (NCTT) phosphors with the orthorhombic perovskite-type structures were prepared by a solid-state reaction method. The successful synthesis of the target samples was confirmed through various characterization techniques, such as XRD and Rietveld refinement, SEM, EDX spectroscopy, as well as elemental mapping. The optimal Dy3+ doping concentration of NCTT:xDy3+ under n-UV excitation was 0.10 mol. The phenomenon of efficient energy transfer between Dy3+ and Eu3+ ions was observed in the NCTT:0.1Dy3+/yEu3+ samples, as evidenced by the shortened lifetimes. Meanwhile, in the NCTT:0.1Dy3+/0.15Eu3+ sample, the PL intensity of Eu3+ ion at 420 K still maintained at 72.41% of that at 300 K, while that of Dy3+ ion is 82.35%, displaying its brilliant thermal stability. The performance of the fabricated white LED device using NCTT:0.1Dy3+/0.15Eu3+ as red phosphor was found to be outstanding, with Ra of 88, CCT of 5868 K, as well as excellent CIE chromaticity coordinates (0.325, 0.333), suggesting that NCTT:0.1Dy3+/ 0.15Eu3+ can be used as reddish-orange phosphors for w-LEDs in lightings and displays.
Keyword ：
Luminescence Luminescence Phosphors Phosphors W-LEDs W-LEDs
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| GB/T 7714 | Ru, Jingjing , Zeng, Fan , Liu, Yujin et al. The performance tuning of NaCaTiTaO6:Dy3+, Eu3+phosphor by employing the co-doping strategy for white LED application [J]. | OPTICAL MATERIALS , 2023 , 144 . |
| MLA | Ru, Jingjing et al. "The performance tuning of NaCaTiTaO6:Dy3+, Eu3+phosphor by employing the co-doping strategy for white LED application" . | OPTICAL MATERIALS 144 (2023) . |
| APA | Ru, Jingjing , Zeng, Fan , Liu, Yujin , Zhao, Bing , Li, Minyu , Sun, Xiaoli et al. The performance tuning of NaCaTiTaO6:Dy3+, Eu3+phosphor by employing the co-doping strategy for white LED application . | OPTICAL MATERIALS , 2023 , 144 . |
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Ce9.33(SiO4)6O2 (CSO) crystals were grown by the Czochralski (Cz) method. Rietveld refinement of XRD patterns confirmed the oxyapatite structure of CSO, XPS analysis revealed the valence of Ce ions in CSO crystals. Magnetization curve and temperature dependencies of the magnetic susceptibility were measured, paramagnetic behavior and magnetic anisotropy have been observed. Photoluminescence and Faraday rotation characteristics of the CSO crystal were investigated at room temperature. Verdet constants of CSO were about 1.6 times as large as those of TGG. Baesd on Van Vleck-Hebb theory, the effective transition wavelength and probability of CSO crystal were calculated and compared with other Ce3+-containing crystals. The absorption and magnetic circular dichroism (MCD) spectra of 4f -> 5d transitions in Ce3+ ions in CSO crystal were studied.
Keyword ：
Czochralski method Czochralski method Magnetic circular dichroism(MCD) Magnetic circular dichroism(MCD) Magneto -optical properties Magneto -optical properties Verdet constants Verdet constants
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| GB/T 7714 | Chen, Xin , Lan, Qingying , Zhao, Bin et al. Czochralski growth, optical and magneto-optical properties of Ce9.33(SiO4)6O2 crystal [J]. | OPTICAL MATERIALS , 2023 , 147 . |
| MLA | Chen, Xin et al. "Czochralski growth, optical and magneto-optical properties of Ce9.33(SiO4)6O2 crystal" . | OPTICAL MATERIALS 147 (2023) . |
| APA | Chen, Xin , Lan, Qingying , Zhao, Bin , Chen, Jianzhong , Guo, Feiyun . Czochralski growth, optical and magneto-optical properties of Ce9.33(SiO4)6O2 crystal . | OPTICAL MATERIALS , 2023 , 147 . |
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本发明公开了一种含铕、铽的氧基磷灰石稀土硅酸盐磁光晶体及其制备方法。本发明中的磁光晶体分子式为Eu2Tb8(SiO4)6O2，为同成分熔融化合物，可采用中频感应提拉法生长，还原方法方便快捷，生长周期较短、工艺简单，原料成本较低，能够实现批量生产。本发明Eu2Tb8(SiO4)6O2磁光晶体在1064 nm波长处的费尔德常数(Verdet constant)为76‑78 rad/T·m，约是此波段下商品化的TGG晶体的1.9倍。
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| GB/T 7714 | 郭飞云 , 兰晴颖 , 赵国栋 et al. 一种含铕、铽的氧基磷灰石稀土硅酸盐磁光晶体及其制备方法 : CN202210022927.X[P]. | 2022-01-10 . |
| MLA | 郭飞云 et al. "一种含铕、铽的氧基磷灰石稀土硅酸盐磁光晶体及其制备方法" : CN202210022927.X. | 2022-01-10 . |
| APA | 郭飞云 , 兰晴颖 , 赵国栋 , 王雅娜 , 陈建中 . 一种含铕、铽的氧基磷灰石稀土硅酸盐磁光晶体及其制备方法 : CN202210022927.X. | 2022-01-10 . |
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