JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 103
·期 1
·382-390
·
IF 3.094
Linli Shen,Zelong Zhang,Yi Zhao,Haisheng Yang,Lin Yuan,Ya Chen,Weidong Xiang,Xiaojuan Liang
In this report, a mixed-metal cation-based halide perovskite (HP) CsPb 1− x Ti x Br 3 quantum dots (QDs) were first embedded in the B–Si–Zn glasses using a traditional approach of melt quenching and heat treating. A battery of test results such as photoluminescence, X-ray diffraction, and time-resolved attenuation prove that Ti ions do not destroy the properties of CsPbBr 3 , and they are successfully doped into CsPbBr 3 . At the same time, the doping of Ti ions also reduces the toxicity of lead. By altering the ratio of Pb/Ti, we determined the optimum ratio of CsPb 0.7 Ti 0.3 Br 3 QDs through experimental data. Due to the excellent optical properties and stability of CsPb 0.7 Ti 0.3 Br 3 QDs glass, it was designed to construct the white-light emitting diode device with tunable color coordinate, color rendering index, correlated color temperature, and a high luminous efficiency compared with CsPbBr 3 QDs glass, which may be a promising candidate for the field of lighting and displays.
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高影响因子
Optical Materials Express
·
2018
·Vol. 8
·期 7
·1754-1761
·
IF 2.566
Yantao Xu,Xusheng Xiao,Xiaoxia Cui,Fei Gao,Jian Cui,Xiaogang Liu,Haitao Guo,Jiangbo She,Gang Chen,Min Lu,Bo Peng
The diamagnetic performance of GeS2-Ga2S3 and GeS2-Ga2S3-PbI2 chalcogenide glasses were investigated, and the composition, wavelength and temperature dependences of the Verdet constant were discussed in detail. It indicates that the contributions to the Verdet constant for each kind of ion are in the order of VPb>VGa>VGe in these chalcogenide glasses, and the Becquerel rule is proved to be an effective guidance for predicting the Verdet constant value. A large Verdet constant is obtained in 68GeS2·17Ga2S3·15PbI2 composition glass and the value is 0.230 min·G−1·cm−1 at 635nm, which is greatly larger than those of commercial diamagnetic glasses. Besides, the temperature coefficient of Verdet constant can be regarded as a constant between 278 and 368 K, indicating these chalcogenide glasses are good candidates for magneto-optical devices in temperature instability conditions.
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高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 20
·5183-5191
·
IF 4.696
X. Y. Liu,H. Guo,S. Ye,M. Y. Peng,Q. Y. Zhang
Zinc borate oxyfluoride glasses containing silver ions (Ag+), Ag nanoclusters and manganese ions (Mn2+) have been successfully prepared using the melt-quenching method. Their structure and luminescent properties were evaluated using transmission electron microscopy (TEM), absorption measurements, steady and time-resolved photoluminescence spectra and fluorescence lifetime measurements. Benefitting from the unique excitation/emission characteristics of Ag nanoclusters in the matrix, the Ag singly doped glass exhibited intriguing wavelength dependent, broad band luminescent performance. After Mn2+ ions were built into the singly doped sample, the emission band was extended to white emission and the intensity was enhanced 13 times with a maximal quantum yield of 24.9%. It was demonstrated experimentally that dual-mode energy transfer does occur from isolated Ag+ and (or) Ag nanoclusters to Mn2+. At the same time, the addition of Mn2+ substantially promotes the formation of Ag nanoclusters. Direct spectroscopic evidence as well as the assumed mechanism have been presented for these processes. This research may help to devise a new perspective for the use of noble metal nanoclusters and transition metals in designing broad band tunable light source.
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高影响因子
OPTIK
·
2015
·
IF 0.677
Xijia He,Xuhui Xu,Cuiqiong Yan,Jianbei Qiu
Bi-doped zinic silicate glasses (SG) and germanate glasses (GG) were prepared and the relationship between Bi near infrared (NIR) luminescence and the glass structures were investigated. The absorption, visible luminescence, and X-ray photoelectron spectroscopy (XPS) spectra revealed that the lower valence state of Bi ions containing NIR active centers increased with the decrease of optical basicity in the two sets of glasses. However, the NIR emission in these glasses cannot be merely explained by the theory of optical basicity. In the SG glasses, there is no obvious structural change, the NIR luminescence can be well interpreted by theory of optical basicity. But there is a distinct transformation in the GG glasses, the abnormal fluorescence phenomenon can be connected with the local structure regulating effect. The mechanisms of the NIR emission and local structure regulating effect were discussed.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2020
·Vol. 49
·期 9
·5422-5429
·
IF 1.774
Li Hui,Tong Hua,Zhang Jiefeng,Li Guoqing,Yang Yunxia,Liu Cui,Li Hongbo,Yuan Xiao
Attempts to improve the application performance of noncontact silver (Ag) screen-printing paste for crystalline silicon solar cells, especially in terms of solderability, depend heavily on controlling the properties of the glass additive therein. Taking PbO–B 2 O 3 –SiO 2 – R x O y glasses as an example, this work demonstrates an improvement in the Ag paste due to the R x O y (e.g., ZnO, Bi 2 O 3 , Al 2 O 3 , and MgO) component. The R x O y components were found to help improve the sintering compactness of the Ag paste. The inclusion of the different R x O y components resulted in obvious differences in the soldering state of the sintered Ag grid. Microscopic observations revealed that the soldering state was related to the covering of the solder on the Ag grid and the growth rate of the intermetallic compound Ag 3 Sn during soldering. Comparatively, the sintered Ag grid was soldered more firmly when the glass containing the Bi 2 O 3 or Al 2 O 3 component was used in the Ag paste. This is due to the higher coverage of solder on these Ag grids and the appropriate growth rate of Ag 3 Sn. Considering these findings, the functions of the R x O y components are discussed comprehensively.
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高影响因子
iScience
·
2021
·Vol. 24
·期 7
·102735-102735
·
IF 5.458
Yongchang Guo,Jianqiang Li,Ying Zhang,Shaowei Feng,Hong Sun
Glasses with high hardness, high Young's modulus, and high fracture toughness become crucial materials which are urgently needed in the protective covers for various electronic displays. Here, a paradigm is presented that the conceptual design of high-entropy materials is adaptable to high performance oxide glasses. We designed the multi-component glass compositions of 18.77R 2 O 3 -4.83Y 2 O 3 -28.22TiO 2 -8.75ZrO 2 -39.43Al 2 O 3 (R = La, Sm, Gd) and elaborated successfully the glassy samples through a containerless solidification process. The as-prepared samples demonstrated the outstanding mechanical and optical properties. The measured hardness, Young's modulus, and indentation fracture toughness of the high-entropy (R = Gd) glass are 12.58 GPa, 177.9 GPa, and 1.52 MPa·m 0.5 , respectively, in which the hardness and Young's modulus exhibit the highest value among the reported oxide glasses. Structural analysis revealed that the excellent mechanical properties are attributed to the large dissociation energies and the high field strength of Al 2 O 3 , TiO 2 , and ZrO 2 and the complex interaction between atoms caused by high entropy.
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PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 7
·4116-4127
·
IF 3.9
Shuangli Dong,Yanqi Jia,Yongbao Xiao,Qinyuan Zhang
Despite the significant technological applications of laser glasses, the quantitative prediction and optimization of their properties, particularly the spectroscopic properties, remain challenging. Here we address this problem by regarding the nearest-neighboring congruently melting compounds as the “component and structural motifs” based on the phase diagram approach. The composition–structure–property (CSP) relationships of Nd 3+ -doped ternary phosphate glasses are investigated. Spectroscopic properties are quantitatively predicted with an error of less than 10% compared to the experimental results. In particular, the fluorescence lifetime ( τ m ) can be accurately calculated using the phase diagram approach, which is difficult to be predicted previously. Furthermore, the CSP databases with over 1000 compositions are established for the optimization of commercial laser glasses. This study enriches the CSP database of traditional laser glass and provides guiding significance for future research.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 103
·期 10
·5664-5677
·
IF 3.502
Yao Ji,Yongbao Xiao,Shujing Huang,Weichao Wang
Fluoro-sulfo-phosphate (FPS) glass is of current interest as potential material for laser application due to its good glass-forming ability, thermal, and chemical stability as well as the complicated local environment for incorporated species. Herein, the physical and luminescent properties of Er 3+ and Yb 3+ /Er 3+ -doped FPS glasses vs S/F ratio are investigated comprehensively. The low melting temperature (750°C) leads to fewer ingredients evaporation and easier operation. The sulfate addition depolymerizes the structure of FPS glasses, leading to either monotonic or nonmonotonic variations of physical properties, while no deterioration in thermal and limited one in chemical stability is caused. The addition of sulfate also modifies the local structure around optical active species and thus, leading to higher emission cross section (1.52 × 10 −20 cm 2 ), effective linewidth (68.4 nm), figure of merit (5.61 × 10 −23 s cm 2 ), gain bandwidth (102.44 × 10 −27 cm 3 ), and energy-transfer microparameters (51.87 × 10 −39 cm 6 /s), implying high possibility to serve as 1.5 μm laser application.
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高影响因子
Heliyon
·
2023
·
IF 4
Kai Huang,Feng Jiao Zhao,Wen Qiang Song,Chang Yuan Xu,Hong Ming Yin
Er 3+ has received extensive attention due to its excellent optical properties, especially its emission at 1535 nm in atmospheric propagation window. Enhancement and regulation of 1535 nm emission of Er 3+ is of great significance to optical communication. In this work, growing of CsPbBr 3 QDs has been controlled through adjusting annealing time which would precisely regulate conduction band of CsPbBr 3 QDs to match energy levels of Er 3+ enabling energy transfer between Er 3+ and CsPbBr 3 QDs. By steady-state and transient PL emission and excitation spectroscopy, we reveal multiple energy transfer processes between Er 3+ and CsPbBr 3 QDs under different excitation wavelengths in Er 3+ doped CsPbBr 3 QDs glass: under higher energy excitation (∼378 nm), energy transfer from Er 3+ to CsPbBr 3 QDs and this extra energy within CsPbBr 3 QDs decay via a non-radiative pathway; under lower energy excitation (∼524 nm), energy transfer from conduction band of CsPbBr 3 QDs to 4 S 3/2 energy level of Er 3+ which significantly enhances PL emission of Er 3+ in near infrared region (∼1535 nm, 4 I 13/2 → 4 I 15/2 ). These results provide a facile approach to enhance and regulate PL emission of Er 3+ in near infrared region.
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高影响因子
Journal of Physical Chemistry C
·
2017
·
IF 4.536
Ruili Zhang,Jinjun Ren,Xinqiang Yuan,Yun Cui,Lei Zhang,Long Zhang
Glasses in the system xBi2O3–(100 – x)NaPO3 were prepared using transitional melting–quenching and characterized using solid state nuclear magnetic resonance (SSNMR), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FT-IR). The addition of Bi2O3 results in the depolymerization of the phosphorus chain and the formation of Q(n) (n = 0, 1, 2) phosphorus species, where n represents the number of P–O–P bonds that can be quantified using 31P magic angle spinning (MAS) NMR and constant-time double-quantum based dipolar recoupling effects nuclear alignment reduction (CT-DQ-DRENAR). The 23Na{31P}, 31P{23Na}, and XPS results consistently prove that both Na+ and Bi3+ ions are bounded by phosphorus tetrahedron [PO4]3–. Unlike other trivalent ions such as Ga3+ and Al3+, which connect with the phosphorus tetrahedron by corner-sharing, Bi3+ ions were first proved to share edge with the phosphorus tetrahedron by the analysis of 31P spectra, taking the charge balance and bond valence consideration into account. Such a difference in connectivity results in significant structural differences.
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高影响因子
ADVANCED POWDER TECHNOLOGY
·
2017
·
IF 2.659
Qing Hu,Weihui Jiang,Xiaofeng Chen,Yuli Li,Qiming Liang
We synthetized a series of strontium-substituted submicron bioactive glasses spheres (Sr-SBG, SiO 2 -P 2 O 5 -CaO-SrO) in which strontium was substituted for calcium on a mole percentage basis, then investigated the effect of strontium-substituted amount on morphologies, physicochemical properties, apatite-forming bioactivity of SBG and evaluated the proliferation, differentiation and mineralization of Sr-SBG with different strontium substitution amounts by co-cultured with human dental pulp cells (HDPCs). Results showed that Sr-SBG with different strontium substitution amounts were successfully fabricated and substituting different strontium amounts did not affect the morphology and particle size of SBG. All the Sr-SBG possessed good apatite-forming ability, but substituting a certain amount of strontium for calcium would weaken the apatite-forming ability of SBG. Additionally, all the Sr-SBG extractions promoted proliferation, early odontogenic differentiation and mineralization of HDPCs, however, the cell proliferation, differentiation and mineralization abilities would be reduced when the substituted amount of strontium was excess (15 mol%). This study suggests that Sr-SBG with moderate strontium substitution amounts can be used as a more promising biomaterial for dental repair.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·Vol. 54
·期 6
·4882-4890
·
IF 2.5
Fu Yingtao,Chen Zhaoyang,Sun Yifan,Liu Yi,Fan Yanwei,Wang Junhua,Chen Huiming
In order to develop glass-ceramic materials capable of emitting neutral white light and to address the limitations of single rare earth element ion-doped luminescent materials, a glass-ceramic material containing Dy 3+ /Eu 3+ -co-doped NaCaPO 4 nanocrystals was successfully synthesized using the melt-quenching and two-step crystallization methods. The prepared glass-ceramic materials were characterized by X-ray diffraction, transmission electron microscopy, and photoluminescence spectroscopy. The energy transfer process between Dy 3+ and Eu 3+ ions was confirmed through excitation spectra, emission spectra, and luminescence decay curves. The emission coordinates and correlated color temperatures of samples with different doping concentrations were calculated using the standard CIE 1931 colorimetric system. The results showed that coordinated emission was achieved in the glass-ceramic containing NaCaPO 4 nanocrystals under excitation at 363 nm. Furthermore, by adjusting the concentration ratio of Dy 3+ and Eu 3+ ions, the color temperature of the white light emission could be tuned from 9910 K to 5349 K, enabling modification of the emission color from the cool-white region to the pure-white region, with chromaticity coordinates reaching (0.3350, 0.3040). Additionally, the material exhibited high thermal stability, with an activation energy of 0.18649 eV. It is expected that the Dy 3+ /Eu 3+ -co-doped NaCaPO 4 glass-ceramic studied here has broad prospects for applications in white light-emitting diodes.
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高影响因子
危险品化学品经营许可证（带存储）