INORGANIC CHEMISTRY
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2025
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IF 4.7
Lang Pei,Yingqiang Yu,Zhanfeng Ma,Xusheng Wang,Qinan Mao,Jiasong Zhong
Sr2MgSi2O7/Eu2+, Dy3+ (SMSED) phosphors show promise for persistent luminescence applications due to their long afterglow and robust chemical stability. However, a trade-off exists between achieving precise size and shape control of SMSED and maintaining prolonged afterglow intensity and duration during synthesis. Herein, we unveil a molten-salt method that successfully produces uniform single-crystalline plate-like SMSED for the first time. This synthesis significantly reduces both the sintering temperature and time compared to the classic solid–state reaction (SSR) method. Owing to the nanoplates structure, uniform size distribution, and single-crystal nature, the resulting SMSED exhibited excellent afterglow performance and thermal stability, with a sustained blue afterglow exceeding 24 h and retaining >70% of its initial luminescence up to 523 K, outperforming most reported SMSED phosphors. These remarkable properties underscore the considerable potential of SMSED nanoplates for applications in fingerprint detection. This work unlocks a new synthetic frontier for achieving the controllable synthesis of SMSED phosphors, paving the way for future optimizations aimed at the development of advanced persistent luminescent phosphors.
研究领域:
材料科学
·
化学
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产品关联
DOI
PubMed
高影响因子
BULLETIN OF MATERIALS SCIENCE
·
2024
·Vol. 47
·期 2
·1-10
·
IF 1.9
Ru Jingjing,Zhao Bing,Zeng Fan,Guo Feiyun
A set of colour tuning K 2 Ba(MoO 4 ) 2 : Dy 3+ /Eu 3+ (KBM: Dy 3+ /Eu 3+ ) 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 Dy 3+ ions’ typical transitions of 4 F 9/2 → 6 H J (J = 15/2, 13/2). By introducing Eu 3+ ions into KBM: 0.03Dy 3+ phosphor, the ET from Dy 3+ to Eu 3+ ions arises, leading to colour tuning from green via yellowish green to pink with changing Eu 3+ 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 Dy 3+ ions and 91.2% for Eu 3+ 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: Dy 3+ /Eu 3+ phosphors are prospected to be used for the near-UV excited white light-emitting diodes.
研究领域:
材料科学
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光学
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2020
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IF 4.495
Chao Chen,Zhaofeng Gu,Qinling Li,Yuepin Zhang
Dy 3+ /Tb 3+ co-doped oxyfluoride glass ceramics (GC) containing lithium tetrafluoroyttrium (LiYF 4 ) and yttrium fluoride (YF 3 ) nanograins were prepared by a traditional melt-quenching approach. The crystalline phases and morphologies of the GCs were investigated. The GCs showed enhanced green emission from Tb 3+ ions and the quenching of Dy 3+ emission because of the efficient energy transfer from Dy 3+ to Tb 3+ ions. The electric dipole-dipole interactions were responsible for the energy transfer mechanism between Dy 3+ and Tb 3+ ions. The energy transfer efficiencies of these glass ceramics were calculated from their decay curves. The Dy 3+ /Tb 3+ co-doped oxyfluoride GCs with various visible emissions were found to be potential candidates for white-light emitting diode applications.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2022
·
IF 3.407
Xiaoting Chen,Lehui Liu,Yisheng Huang,Feifei Yuan,Lizhen Zhang,Zhoubin Lin
In this article, a series of Dy x Ca 3 Gd 2-x (BO 3 ) 4 (x = 0.02–0.2) polycrystalline compounds were synthesized by solid-state reaction to select the optimum concentration for single crystal growth, after then a 6.36 at.% Dy 3+ :Ca 3 Gd 2 (BO 3 ) 4 (Dy:CGB) single crystal with a disordered structure was successfully grown by the Czochralski method . The spectroscopic properties and Judd-Ofelt analyses of the crystal were carried out. Focusing on the absorption cross-section at 453 nm corresponding to the emission bands of InGaN laser diodes, the Dy:CGB crystal has a comparatively large value of 0.95 × 10 -21 cm 2 with a full width at half maximum (FWHM) of 10.2 nm. The yellow light emission cross-section at 576 nm is 2.2 × 10 -21 cm 2 with a FWHM of 14.0 nm. The Judd-Ofelt parameters Ω 2 , Ω 4 and Ω 6 were obtained to be 2.79 × 10 -20 cm 2 , 2.10 × 10 -20 cm 2 and 2.28 × 10 -20 cm 2 , respectively. The fluorescence lifetime of 4 F 9/2 → 6 H 13/2 transition was measured to be 0.26 ms. These results reveal that the Dy:CGB crystal is a promising yellow laser candidate.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
IEEE Photonics Journal
·
2025
·
IF 2.4
Yexi Sun,Qianyu Huang,Xin Guo,Maohui Yuan,Kai Han
Lanthanide-doped phosphors are of importance in the practical applications. In this work, we investigated the photoluminescence properties and random lasing behaviors of Dy3+-doped Sr2MgMoO6 phosphors synthesized by the high-temperature solid-state method. The SEM, XRD, and EDS with elemental mapping results reveal the successful fabricating of the high-quality Sr2MgMoO6 phosphors and confirm the uniform distribution of constituent elements. Structural characterization through precise Rietveld refinement confirmed that the material crystallizes in a tetragonal system with space group I4/m (No. 87), and its refined lattice parameters are also determined. The effect of different Dy3+ doping concentrations on the luminescent properties was analyzed. The optimal doping concentration for achieving efficient luminescence is fixed at 0.08 mol%. Typical emission peaks centered at 484 nm, 576 nm, 656 nm, and 756 nm of Dy3+ were observed under the blue light excitation. Additionally, random lasing phenomena were observed in the Sr2MgMoO6 phosphors when excited with a 355 nm pulsed laser under varying pump power densities. The random lasing behaviours were confirmed by the emergence of narrow emission peaks with a narrow full width at half maximum (FWHM) and the dependence of the intensity on the excitation intensity. This work highlights the potential of Dy3+-doped Sr2MgMoO6 phosphors as efficient luminescent materials and demonstrates their application in random lasing, which opens new possibilities for their use in optoelectronic and laser technologies.
研究领域:
材料科学
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光电子学
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光子学
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固体物理
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激光技术
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2024
·
IF 5.8
Wenjing He,Yuhuan Xu,Heng Xu,Jiajia Du,Junlei Wang,Ya Wang,Zhongli Wu
Rapid, portable, and sensitive detection of Zn 2+ is crucial for human health. In this study, SA/PEG/Ln fluorescent hydrogels were synthesized via in situ polymerization with lanthanide metals (Tb 3+ /Dy 3+ ) and PAM. The results demonstrated a significant improvement in mechanical properties (132.8 % increase in compressive properties) after rare earth doping. The addition of Dy 3+ enhanced the fluorescence properties of the singly doped Tb 3+ fluorescent hydrogel (maximum luminous intensity increased by 1900 cd). Monitoring changes in fluorescence intensity enabled the realization of Zn 2+ detection, allowing for quick and accurate determination of zinc ion presence. Visual monitoring of Zn 2+ was achieved with the assistance of a portable ultraviolet lamp.
研究领域:
生物材料学
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分析化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Liupeng Pan,Shunli Liu,Xiaolu Zhang,Olayinka Oderinde,Fang Yao,Guodong Fu
We report a kind of dopant (Eu 2+ ) and co-dopant (Dy 3+ ) co-doped strontium magnesium silicate phosphor synthesized via microwave irradiation in a weak reductive atmosphere of active carbon. X-ray diffraction (XRD) patterns illustrated that the samples were nearly pure Sr 2 MgSi 2 O 7 phase, in which the Sr 2 MgSi 2 O 7 host phase has the maximum fraction of tetragonal crystallography Sr 2 MgSi 2 O 7 phase. A series of long afterglow luminescent materials were synthesized to investigate the best synthetic conditions. The results showed that the optimal concentration of H 3 BO 3 and the best sintering time were 5 wt% and 30 min, respectively. The phosphors made from the microwave irradiation method demonstrated excellent luminescence performance and the microwave irradiation method provide a strategy for the synthesis of other alkali earth aluminate and silicate, or other luminescent materials.
研究领域:
材料科学
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发光材料
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合成方法
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Shiyu Xu,Junjie Fu,Xuening Liu,Meiyu Yuan,Chaoqun Zhang,Haibo Wang,Guangxi Liu,Sheng Cui
A family of highly thermal chromatic stable Dy 3+ -Eu 3+ doped B 2 O 3 -Bi 2 O 3 -ZnO-Li 2 O (BBZL) glass samples was synthesised using the high-temperature melt quenching technique. The optical and thermal stability properties of the samples were analysed using their fluorescence spectra at various temperatures, fluorescence lifetime decay times and colour coordinates. The Dy 3+ -doped BBZL (BBZL: Dy) glass samples generated cold white light when exposed to ultraviolet (UV) light, while the Dy 3+ -Eu 3+ -doped BBZL (BBZL: DyEu) glass samples emitted neutral and warm white light, which can be attributed to the introduction of Eu 3+ that substantially enhanced the colour rendering of samples. An overlap of the excitation-emission spectra of Eu 3+ and Dy 3+ indicated an energy transfer between Dy 3+ and Eu 3+ . Under a 350 nm excitation, the fluorescence lifetime of BBZL: DyEu decreased from 0.5348 to 0.3642 ms. Using the Dexter theory, the energy transfer between Dy 3+ and Eu 3+ was demonstrated to be an electric dipole-electric dipole leap. The chromaticity shifts of BBZL: DyEu were 8.60 × 10 −4 and 9.40 × 10 −4 at 448 and 498 K, respectively, reflecting the high thermal stability of the sample chromaticity. The study demonstrated that Dy 3+ -Eu 3+ doped borate glasses can be used as tunable luminescent materials in high-power white light-emitting diodes to mitigate the chromaticity shift in fluorescent materials at high temperatures.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Ying Zhang,Jie Li,Chenqing Liao,Yang Xiao,Bing Lu,Shuai Wang,Yingli Liu,PengJie Zhang
According to this study, Co 2 Z ferrite is suitable for applications in high-frequency antennas. Ba 3 Co 2 Fe 24-x Dy x O 41 samples with different values of Dy 3+ doping concentration (x) in the range of 0.00–0.25 were prepared in the study by employing solid-state sintering and 2.5 wt% Bi 2 O 3 sintering aids. A systematic analysis of the physical phase structure, microstructure, and magnetic dielectric properties of the samples was also performed. The X-ray diffraction patterns of the samples showed that doping with Dy 3+ ions and the addition of the Bi 2 O 3 sintering aid had not changed the physical structure of the sample material, indicating that the material was still a Z-type hexagonal ferrite. In addition, according to the magnetic hysteresis loops of the samples, all six groups of them exhibited typical soft magnetic properties . With an increase in the Dy 3+ ion doping concentration, the saturation magnetization intensity and coercivity of the samples initially increased and then decreased. The sample with a Dy 3+ ion doping concentration of 0.15 had the most uniform grain distribution, largest density, and smallest porosity among the samples. Additionally, that sample had the maximum values of the real parts of the magnetic permeability (7.89) and permittivity (13.90) while having a low magnetic loss (tanδ μ ≤0.04) and a low dielectric loss (tanδ ε ≤0.03). Thus, this type of magnetic dielectric materials will have significant potential for use in high-frequency antenna applications.
研究领域:
材料科学
·
电磁学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Lei Lei,Deyu Wang,Yongfu Kang,Yoann de Rancourt de Mimérand,Xiaoyun Jin,Jia Guo
The combination of a phosphor with semiconductor photocatalysts can provide photoactivity in the dark. Indeed, the phosphor acts as a “light battery”, harvesting photons during irradiation and later re-emitting light that can be used by the catalytic phase when in conditions of total darkness. This allows for continued activity of the composite catalyst, even in conditions of unstable light stimulation. In this study, we assess the use of a heterojunction, namely graphitic-C3N4/Ag3PO4, that enables efficient photoactivity specifically under visible light stimulation, in combination with a phosphor that exhibits green–blue phosphorescence (510 nm), that is SrAl2O4:Eu2+,Dy3+. Our findings showed that this combination was particularly interesting, noticeably displaying significant photoactivity in darkness, after short periods of activation by visible light. After finding the right combination and optimal ratios for maximum efficiency, the resulting catalyst composite was immobilized on resin supports with a fractal surface, printed by LCD-SLA 3D printing. The immobilization was effectuated via an aqueous-phase plasma-aided grafting (APPAG) process, using cold plasma discharge (CPD) and using vinylphosphonic acid (VPA) as a coupling agent. Whereas the colloidal photocatalyst displayed a serious problem of partial physical separation between the catalytic phase, g-C3N4/Ag3PO4, and the phosphor, the immobilization of the composite catalyst on polymer supports allowed solving this issue. Photodegradation assessments confirmed that the hybrid supported phosphor-enhanced catalyst was active, notably in dark conditions, as well as fairly photostable. This study offers new prospects for the fabrication of polymer-based panels for water purification, with round-the-clock activity and that are, in addition, extremely easy to recover and reuse, by comparison with colloidal catalysts.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Lina Wang,YuJia Gong,YuHao Xia,Xingyu Zhao,Hai Guo
Non-invasive optical thermometer based on fluorescence intensity ratio ( FIR ) technology has a good market prospect. Herein, we reported Dy 3+ doped boroaluminosilicate glass and established dual-mode temperature sensing models by FIR . The X-ray diffraction patterns, differential scanning calorimetry and fourier transform infrared spectra were used to investigate the structure of glass sample. Besides, the transmittance spectra reveal that all samples have good transparency, which implies good light output capacity. Excited by 349 nm, the intensities of emission peaks at 454, 482, and 575 nm show different trend with increasing temperature (303–573 K). The maximal relative sensitivity reaches 1.72 %K −1 (I 482 /I 575 ) and 1.62 %K −1 (I 454 /I 575 ) at 303 K, respectively. The results surpass that of FIR thermometry based on Er 3+ doped systems. The reason is that the efficient energy gap of 4 I 15/2 level and 4 F 9/2 level of Dy 3+ ions is higher than that of Er 3+ ions. These results suggest that Dy 3+ doped boroaluminosilicate glasses are expected to be applied in optical temperature sensing field.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2021
·
IF 3.531
Shuhang Tian,Yipeng Lun,Yongsheng Sun,Dongdan Chen,Guowu Tang,Qi Qian,Zhongmin Yang
In this work, strong yellow emission was obtained in Dy 3+ doped multi-component phosphate glass due to its high asymmetry and covalency of the local field and high phonon energy. The internal quantum efficiency was measured to be 39.27% and the figure of merit was calculated to be 210.53 pm 2 × μs. What is more, silicate-clad Dy 3+ doped multi-component phosphate core glass fiber was successfully drawn by using a rod-in-tube method, which has a strong fluorescence emission in yellow spectra band. The Dy 3+ doping concentration is 2.6 wt.%, which is much larger than that of Dy 3+ doped (0.2 wt.%) ZBLAN fiber. These results suggest that the silicate-clad Dy 3+ doped multi-component phosphate glass fibers are potential host matrices for yellow laser.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）