JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Olga Giraldo Giraldo,Mingzhi Fei,Rongfei Wei,Liming Teng,Zhigang Zheng,Hai Guo
Bi 3+ /Eu 3+ -doped SiO 2 –Al 2 O 3 –CaO–B 2 O 3 –La 2 O 3 –K 2 O glasses were fabricated and the luminescent properties, energy transfer as well as thermal stability were systematically investigated. Under 333 nm light excitation, bluish-green luminescence centered at 480 nm is observed in the obtained Bi 3+ -doped glass. By co-doped with Eu 3+ , highly efficient energy transfer process happens from Bi 3+ to Eu 3+ via a quadrupole-quadrupole interaction. The energy transfer efficiency can reach 86% and the concentration of Eu 3+ is not quenched in here. With increasing Eu 3+ concentration, tunable luminescence from bluish-green via white to orange-red is realized. Significantly, pure white light emission with CIE coordinates (0.348, 0.333) is obtained when excited by 333 nm light. Temperature-dependent emission spectra present superior color stability in operating temperature lower than 423 K for the prepared glasses. These results indicate that these glasses are potential white light emitting materials for organic-resin-free W-LEDs.
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
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2024
·
IF 3.2
Zijuan Du,Zhitao Shan,Ang Qiao,Haizheng Tao,Yuanzheng Yue
Aluminate glasses are known for their superior mechanical and optical properties. Here, we investigated the tantalum (Ta)-lanthanum (La) mixing effect on structural and mechanical properties of these glasses. Using the aerodynamic levitation and laser melting technique, we prepared a series of aluminate glasses with the molar composition 54Al 2 O 3 ·(46-x)La 2 O 3 ·xTa 2 O 5 , where x = 0.0, 9.2, 18.4, 23.0, 32.2, 36.8, and 46.0. The structural, thermal, and mechanical analyses revealed that substituting Ta for La strongly impacted the local Al environment in the glasses, thereby affecting their glass transition temperature and mechanical properties. The Vickers microhardness ( H V ) varied non-monotonically with the molar ratio R (defined as Ta/(Ta+La) = x /46), reaching a maximum H V value of 8.59 GPa at R = 0.8. This trend was explained in terms of both the average bond energy and the bond number density. Moreover, the crack initiation resistance of the studied glasses increased as R rose. This work aids in the design of oxide glasses with high crack resistance and hardness.
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
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2021
·
IF 3.531
Juping Ma,Yan Jiao,Chongyun Shao,Yan Sun,Fei Yu,Lili Hu
In this work, Tb 3+ /Al 3+ co-doped and Al 3+ single doped silica glasses are taken as the research objects, and X-ray is used as the simulated light source to study the photodarkening mechanism. Detailed optical properties of the glasses before and after X-ray irradiation and the results of electron paramagnetic resonance (EPR) indicate that the photodarkening effect is attributed to the valence changes of Tb 3+ ions and the energy transfer between Tb 3+ ions and related defects. In addition, this work revealed the relationship between valence changes behavior of Tb 3+ ions and various defects in glass matrix materials, deepening the understanding of the photodarkening mechanism in Tb 3+ doped oxide glass. We envisage that our finding provides a depth-theoretical support for the synthesis of Tb 3+ -doped oxide matrix glass fibers with excellent optical and anti-photodarkening performance.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·1001-1014
·
IF 4.186
Shuangli Dong,Yanqi Jia,Yao Ji,Qinyuan Zhang
Predicting the properties of glass based on compositional and structural information is a fundamental issue with enormous practical and industrial significance for the study of laser glass. Here we address this problem and demonstrate the application of phase diagram method in predicting the spectroscopic properties of Nd 3+ -doped binary and ternary silicate, binary phosphate, and borate laser glasses from their initial congruently melting compounds. In particular, spectroscopic properties, such as effective linewidth (Δ λ eff ) and fluorescence branching ratio ( β ) can be precisely predicted in all glass systems with an error less than 5%. Furthermore, a composition–structure–property database of Nd 3+ -doped ternary silicate glass system is established and preliminarily applied to the composition design and explanation of commercial glass. This study provides interpretable predictions of the optical and spectroscopic properties for Nd 3+ -doped laser glasses.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Juping Ma,Yan Sun,Fei Yu,Tianfeng Xue,Lili Hu
Tb 3+ ions doped optical materials have emerged as gain media for green fiber lasers. Dy 3+ ions were proposed as a sensitizer of Tb 3+ ions in glasses to increase the excitation efficiency, yet a systematic understanding of the impact of Dy 3+ doping on spectroscopic and physiochemical properties of glasses remains lacking. Here, using Tb 3+ /Dy 3+ doped fluoride glass as a model system, we reveal that Dy 3+ doping not only enhances Tb 3+ emission intensity, but also increases the thermal stability of fluoride glasses. Detailed spectroscopic characterizations indicate that co-doping Dy 3+ ions boosts visible luminescence intensity of Tb 3+ ions in fluoride glasses due to sensitization of Tb 3+ by Dy 3+ ions. Importantly, we deeply research the energy transfer process , ascertain several important factors affecting energy transfer efficiency and propose optimal doping concentrations of Tb 3+ and Dy 3+ ions for visible emission. We envisage that our finding provides a new perspective for the synthesis of Tb 3+ -doped fluoride glasses with enhanced thermal stability, and may be extended for the fabrication of Tb 3+ -activated optical fibers .
研究领域:
光学材料
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无机非金属材料
·
光子学
·
稀土掺杂玻璃
·
光纤激光器
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高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Juping Ma,Yan Jiao,Chongyun Shao,Yan Sun,Yiguang Jiang,Fei Yu,Lili Hu
In this study, we explore the photodarkening mechanisms of Tb 3+ -activated silica , phosphate, fluorophosphate, and fluoride glasses . The glasses were prepared by either conventional melting or sol-gel combined with high temperature sintering . The absorption, emission spectra , lifetime, and electron paramagnetic resonance (EPR) spectra of Tb 3+ -activated host glasses are systematically characterized before and after X-ray irradiation. The results show that the formation of Tb 4+ ions and the oxygen-related hole defects are two key factors which led to the photodarkening in visible region of above glasses after X-ray irradiation. Evaluating from the change of absorption, emission intensity and lifetime at 540 nm, fluoride glass demonstrated a superior photodarkening resistance among four kinds of glasses. It is a preferred host material for lasing operation at visible wavelengths. Our findings offer insight into the photodarkening mechanism of different Tb 3+ -activated glasses which find applications in fiber lasers at visible wavelengths.
研究领域:
光子学
·
材料科学
·
光学材料
·
玻璃科学
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激光物理
·
固态光谱学
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Fei Nie,Jiayi Guo,Dongpeng Yan
Glasses are central to modern science and technology, yet conventional silicate, organic polymer, and metallic glasses share persistent limitations: energy-intensive processing and poor recyclability. To address these challenges, we report the large-scale synthesis of supramolecular glasses (SGs) from urea (UR) and ZnCl 2 via a facile grinding–heating–cooling process conducted within a deep eutectic solvent (DES) framework. During heating, the DES facilitates in situ UR polymerization, generating biuret (BU) and cyanuric acid (CA) intermediates that partially coordinate with Zn 2+ ions to yield entropy-stabilized amorphous glass networks. The resulting SGs exhibit excitation-wavelength-dependent ultralong phosphorescence with emission tunable across blue, green, and yellow. In addition to this photonic functionality, the SGs adhere strongly to diverse substrates (e.g., silicate glass, wood, and ceramics) and display exceptional flame retardancy. This combination of tunable luminescence, substrate adhesion, and flame retardancy positions the SGs as promising candidates for intelligent anti-counterfeiting labels, decorative coatings, and flame retardancy applications. This work thereby establishes a sustainable, scalable, and low-cost platform for producing multifunctional glass materials from commercially available precursors, with broad implications for photonics, smart materials, and surface protection.
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2022
·
IF 4.458
Ning Hao,Guanglei Zhang,Zhigang Yang,Guoqiang Qin,Huajiang Jin,Shan Gao
Aluminoborosilicate glasses doped with different types and amounts of rare earth oxides (Dy 2 O 3 , Eu 2 O 3 , and La 2 O 3 ) were synthesized via the sol-gel method. The impacts of doping these rare earth oxides on the glass structure, thermal, and dielectric properties were discussed. IR analyses showed that glasses doped with 2 wt.% La 2 O 3 contained more [BO 4 ] and [AlO 4 ], which optimized the polymerization degree of the glass network, and strengthened the structure. This glass had a lower dielectric constant (ε r = 2.27) and dielectric loss (tanδ = 0.0019) at 13 GHz. Additionally, the glass transition temperature (T g ), initial crystallization temperature (T c ), and thermal stability (△T) all increased with higher rare earth ionic radius (Dy 3+ , Eu 3+ , La 3+ ), due to decreased non-bridging oxygen levels (NBO) of [SiO 4 ] and increased [BO 4 ] and [AlO 4 ] in the glass grid. However, co-doped rare earth oxide glasses inhibited conversion from [BO 3 ] to [BO 4 ] when equal amounts of La 2 O 3 and Dy 2 O 3 or Eu 2 O 3 were added, which resulted in a looser glass network and a higher dielectric constant. As La 2 O 3 gradually replaced Dy 2 O 3 or Eu 2 O 3 , the dielectric constant initially increased and then decreased, ascribed to the shift polarization of RE 3+ in the glass structure.
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产品关联
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Na Zeng,Peng Zhao,Xiaoman Li,Tiefeng Xu,Xueyun Liu
Co-doping of Yb 3+ with Mn 2+ is a promising way to realize broadband up-conversion (UC) luminescence. The tunable broadband emission has been widely demonstrated in crystal materials, but the research on Yb 3+ /Mn 2+ co-doped transparent optical glass has been scare, especially in fluoride-based transparent glass ceramics (GC) that can realize the uniform ions incorporation and efficient UC emission. Herein, a series of Yb 3+ /Mn 2+ activated transparent fluorosilicate GCs containing perovskite KMgF 3 nanocrystals were successfully prepared, and the effect of heat-treatment process and/or Mn 2+ ion content on the UC luminescence modulation has been investigated. Our results show that the spontaneous crystallized precursor sample exhibits only a green emission at ~538 nm, while additional orange-emitting band centered at ~613 nm is noticeable in the GCs with the gradual precipitation of KMgF 3 nanocrystals after heat-treatment. The controllable luminescence can be assigned to the formation of Yb 3+ -Mn 2+ dimers that are located in multiple coordination environments provided by the glass matrix and crystalized nanocrystals. In addition, the prepared GC samples exhibit excellent reversible emission characteristics during heating and cooling cycles. This research not only provides a new option to design desirable coordination environment for Yb 3+ -Mn 2+ dimers, also helps to recognize the UC process in the transparent matrix in detail.
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2019
·
IF 2.6
Xiaoyan Zhang,Weicheng Yang,Jinrong Zhang,Jinsheng Li,Luhong Jiang,Xiwei Qi
A series of colorless and transparent (28- x )La 2 O 3 -72Al 2 O 3 : x Tm 3+ ( x = 0, 1, 1.5, 2, 3) luminescent glasses were successfully prepared by the containerless method. The effects of Tm 3+ substitution on the physical, thermal, optical and photoluminescence properties of La 2 O 3 -Al 2 O 3 glasses were investigated. X-ray diffraction confirmed the amorphous natures of the as-prepared glasses. Excitated at 354 nm, La 2 O 3 -Al 2 O 3 :Tm 3+ glasses emitted blue luminescence at 457 nm, corresponding to the 1 D 2 → 3 F 4 transition of Tm 3+ . These glasses showed high Vicker's hardnesses (7.2–8.8 GPa), and excellent thermal stabilities ( T g : 840–851 °C), which were both augmented with increasing content of Tm 3+ . They also exhibited high transmittances in a wide window ranging from 220 nm to 8.9 μm. In conclusion, the substitution of Tm 2 O 3 for La 2 O 3 increased the Vicker's hardness, thermal stability and transmittance window of La 2 O 3 -Al 2 O 3 glasses, allowing potential applications to optical devices in the visible to infrared region.
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高影响因子
Biomaterials Advances
·
2023
·
IF 0
Jiafei Gu,Xiaoling Liu,Ping Cui,Xiaosu Yi
For the treatment of tumor-related bone defects resulting from surgical resection, simultaneous eradication of residual tumor cells and repair of bone defects represent a challenge. To date, photothermal therapy based on photothermal materials is used to remove residual tumor cells under near infrared light. However, most of photothermal materials have no function for bone repair, and even if combined with bioactive materials to enhance osteogenesis, they still cause potential harm to the body due to inability to degrade or poor degradability. Herein, multifunctional bioactive glasses (PGFe5-1100, PGCu5-1100) based on phosphate glass doped with transition metal elements were prepared for photothermal ablation, bone regeneration, and controllable degradation. The glasses exhibited excellent photothermal effect, which was derived from the electron in-band transition after light absorption due to energy level splitting of doped transition metal element and the subsequent electron nonradiative relaxation. The photothermal performance can be controlled by laser power density, element doping content and glass melting temperature. Moreover, the hyperthermia induced by the glasses can effectively kill tumor cells in vitro. In addition, the glasses degraded over time, and the released P, Ca, Na, Fe could promote bone cell proliferation and osteogenic differentiation. Therefore, these results successfully demonstrated that transition metal element-doped phosphate glasses have multifunctional abilities of tumor elimination, bone regeneration, and spontaneous degradation simultaneously with better biosecurity and bioactivity, which is believed to pave the way for the design of novel biomaterials for osteosarcoma treatment.
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DOI
PubMed
MATERIALS & DESIGN
·
2018
·
IF 4.525
Ping Chen,Zhangru Chen,Shaodong Hou,Xiang Shen,Yingbo Chu,Yu Yang,Luyun Yang,Jinyan Li,Nengli Dai
In this work, we firstly introduce a facile method to synthesize bulk silica glass contained indium tin oxide nanoparticles (ITO NPs). Water solution with InCl 3 and SnCl 4 was mixed and dipped into the mesoporous silica glass (MSG) followed by an in-situ growth of ITO NPs under 1000 °C heat treatment. X-ray diffraction (XRD) and transmission electron microscopy (TEM) show that the ITO NPs are highly monodisperse and crystalline in the silica glass with size around 20–30 nm. The size and distribution of ITO NPs can be regulated by the mesopores of mesoporous silica glass (MSG) effectively. The absorption and photoluminescence (PL) spectra exhibit an optical band gap and a PL emission of the ITO NPs doped silica glass at 3.12 eV and 560 nm, respectively. Results indicate that this kind of composite material has potential applications for optical nonlinearity, plasmonic formation, and sensing in the future.
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高影响因子
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