JAPANESE JOURNAL OF APPLIED PHYSICS
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2025
·Vol. 64
·期 5
·051002
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IF 1.8
Han Zheng,Dongxu Pan,Ling Zhang,Zhengfa Li,Jinping Li,Zhirong Guo
The design of high-performance dielectrics is critical for next-generation capacitors and electronic devices. Herein, (1-x)NaNbO3-xNdFeO3 bulk ceramics were synthesized to investigate the effects of Nd3+/Fe3+ substitution on their dielectric and energy-storage properties. It is revealed that the narrow single polarization–electric field (P–E) loop evolved from double loops to enhance energy-storage performances with increasing x. The maximal recoverable energy-storage density of 1.673 J cm−3 and the efficiency of 76.7% were obtained at x = 0.06 and 0.08, respectively. Moreover, a negative relative permittivity in specific frequency ranges was the answer for the oscillation of domain walls. These results not only suggest that the substitution of Nd3+/Fe3+ optimizes the energy-storage properties of NaNbO3-based ceramics, but also provides a feasible strategy for functional design in electromagnetic metamaterials.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 9
·3696-3705
·
IF 8.1
Wang Yang,Gao Feng,Zhou Shuai,Hu Po,Fu Jiajun
Lanthanide-doped upconversion nanoparticles (UCNPs) have been extensively investigated owing to their unique advantages. So far, the most favored modality of UCNPs is still the classical Yb–A (where A refers to Er 3+ , Tm 3+ , and Ho 3+ )-coupled nanosystems under 980-nm excitation. However, the frequently used Yb 3+ ion with the single-excited 2 F 5/2 state can barely transfer energy to other acceptors owing to its lack of matched excited levels. Herein, a novel strategy is proposed for energy transfer via Ho 3+ as a bridge ion coupling donor-acceptor pairs (e.g., Yb 3+ –Nd 3+ ), where little direct energy transfer occurs, and the involved energy transport mechanisms are investigated. The findings reveal that long-distance energy transportation can occur in the Ho 3+ sublattice owing to the energy migration capability of Ho 3+ and that Ho 3+ as a bridge ion can realize interparticle energy transfer for upconversion luminescence. Moreover, well-designed NaYbF 4 :40%Ho@NaYF 4 :10%Nd core-shell nanoparticles with multimode responsiveness can emit different colored lights under varying excitation wavelengths, which are demonstrated in high-level anticounterfeiting and information identification. Therefore, this work paves a new way to understand the functionality of the Ho 3+ bridge in energy transfer upconversion and offers strategies for broadening energy transfer pathways and finely manipulating photon upconversion.
研究领域:
材料科学
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光学
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纳米技术
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2014
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IF 2.2
Renping Cao,Chunyan Cao,Xiaoguang Yu,Xinyuan Sun,Pengjie Tang,Hui Ao
La 2 BaZnO 5 :Nd 3+ phosphors are synthesized by a conventional high temperature solid state reaction method, and its crystal structure and luminescence properties are investigated. Photoluminescence bands peaking at ~496, 540, 630, 670, 905, 1070, and 1350 nm of La 2 BaZnO 5 :Nd 3+ phosphors are observed at room temperature due to f – f transition of Nd 3+ ion. The optimum Nd 3+ doped concentration is ~0.03. Lifetimes of La 1.97 BaZnO 5 :0.03Nd 3+ phosphor with 496 and 1070 nm monitoring wavelengths are ~280 and 250 µs, respectively. The luminescence mechanism is explained by using simplified energy lever diagram of Nd 3+ ion. La 2 BaZnO 5 :Nd 3+ material can be applied to powerful solid-state lasers as high efficient light sources .
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Quanlan Xiao,Wangyuan Chen
Novel NIR luminescent nanomaterial , Sr 2 CeO 4 :Nd 3+ was successfully prepared with Pechini method. The Sr 2 CeO 4 :Nd 3+ nanophosphors had an orthorhombic crystal structure, and showed plate-like morphology with length of about 260 nm and width of about 130 nm. Upon UV light excitation, the Sr 2 CeO 4 :Nd 3+ nanophosphors exhibited strong NIR emission for the first time. The possible mechanisms of energy transfer for Nd 3+ doped Sr 2 CeO 4 were briefly analyzed. The Sr 2 CeO 4 :Nd 3+ nanophosphors may be poised to be exploited in near-infrared light amplified applications or used as a high efficiency laser material based on their peculiar optical properties .
研究领域:
材料科学
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光学材料
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纳米技术
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光子学
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·1001-1014
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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.
研究领域:
材料科学
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光学工程
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激光物理
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玻璃科学技术
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光谱学
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DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Jinsong Wang,Ruibo Zhao,Xiaoyu Meng,Tao Shen,Zihao Zhang,Cong Cao
Nd3+ ions are commonly employed as sensitizers in lanthanide luminescent nanoprobes. However, the cross-relaxation effect typically limits their doping concentration to less than 5%. To address this limitation, we synthesized and manipulated LiLuF4:Yb,Nd nanoparticles through a rational design of the host lattice and optimization of the doping concentration, achieving up to a 50% doped Nd3+ concentration. The nanoparticles’ morphology, energy transfer mechanisms, and luminescent properties revealed robust near-infrared luminescence and successful imaging of mouse blood vessels. Furthermore, the inclusion of Lu in the nanoparticles enabled X-ray computed tomography imaging, enabling dual-modal imaging capabilities. This study presents a strategy for enhancing the performance of lanthanide luminescent nanoprobes and expanding their applications in multimodal imaging.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2015
·
IF 2.947
Yi Ding,Xirui Lu,Hong Tu,Xiaoyan Shu,Hui Dan,Shuai Zhang,Tao Duan
A series compositions with general stoichiometry as Zr 1− x − y (Nd x Ce y )SiO 4− x /2 (0 ≤ x , y ≤ 0.1) have been obtained by simultaneous substitution of Nd 3+ and Ce 4+ for Zr 4+ in ZrSiO 4 structure. The effects of Nd and Ce content on the phase evolution and microstructure of the ceramics were investigated systematically. The results show that the samples co-doped with total content of Nd 3+ ( x ) and Ce 4+ ( y ) < 0.04 are single zircon phase. However, when the compositions co-doped with total content of Nd 3+ ( x ) and Ce 4+ ( y ) ≥ 0.04 exhibit coexistence of zircon and (Nd,Ce) 2 Si 2 O 7 phase. This demonstrates that the solubility of Nd 3+ and Ce 4+ in zircon structure is around 0.04 mol per mol of zircon. In addition, it is found that the densities of the samples increase with increasing total content of Nd 3+ and Ce 4+ . These results indicate that zircon ceramics are promising candidate for the immobilization of trivalent and tetravalent actinides.
研究领域:
材料科学
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陶瓷
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核材料
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固体化学
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高影响因子
JOURNAL OF LUMINESCENCE
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2024
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IF 3.3
Daqian Wu,Fengxian Zhou,Kai Feng,Jun Wang,Qixuan Lu,Xiaowu Wang,Zijun Zhan,Weiwei Chen,Zhengzheng Liu,Zeyu Zhang,Zhiping Hu,Juan Du
Lead halide perovskite quantum dots (QDs) have garnered significant attention due to their tunable band gaps, unique quantum confinement effects, and high photoluminescence quantum yields (PLQYs). Among them, Organic-inorganic QDs make them promising candidates for optoelectronic devices such as quantum dot light-emitting diodes (QLEDs), solar cells, lasers, and photodetectors. However, the toxicity of lead (Pb) has raised environmental and health concerns, hindering their industrial application. To alleviate concerns about heavy metals Pb, extensive research has been conducted on B-site doping and the development of lead-free perovskites. Herein, we firstly developed B-site doping strategy on organic-inorganic hybrid perovskite QDs via rare-earth elements. Neodymium (III) (Nd 3+ ) doped FAPbBr 3 QDs were prepared through the ligand-assisted reprecipitation method at room temperature. The B-site doping strategy could alleviate the heavy metal problem of Pb and modulate the band gap of FAPbBr 3 QDs facilely. The results demonstrated that increasing the concentration of Nd³⁺ can change the emission of FAPbBr₃ QDs from pure green to deep blue. Specifically, we achieved highly pure blue emission (∼438 nm) with a full width at half maximum (FWHM) of 13 nm for Nd³⁺-doped FAPbBr₃ QDs. Time-resolved photoluminescence (TRPL) spectroscopy revealed a decrease in the lifetime of FAPbBr₃ QDs from 22.86 to 15.46 ns as the doping concentration increased. Additionally, we fabricated a white LED (WLED) utilizing blue-emitting Nd³⁺-doped FAPbBr₃, green-emitting FAPbBr₃ QDs, and red QDs, achieving a white emission color coordinate of (0.33, 0.36). This study pioneers the application of B-site rare-earth doping in organic-inorganic hybrid perovskite QDs, demonstrating that B-site composition engineering is a reliable strategy to further exploit the perovskite family for wider optoelectronic applications.
研究领域:
材料科学
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光学工程
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电子工程
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DOI
高影响因子
Advanced Optical Materials
·
2025
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IF 7.2
Minkun Jin,Wang Chen,Changheng Chen,Yanqi Wu,Lukasz Marciniak,Chongfeng Guo
Chloride double perovskites have sparked significant interest and opened new avenues for luminescent materials hosts due to their lower phonon energy, flexible compositions, and excellent luminescent property. However, the instability to water has limited its fundamental applications, especially in the biological fields, although its stability has been improved in comparison with lead−based perovskites. Here, nanophosphor Cs 2 NaBiCl 6 : Nd 3+ , Yb 3+ (CNBC: Nd 3+ , Yb 3+ ) is prepared by a hot-inject method, and then its stability to water is enhanced by coating a layer of SiO 2 shell. For improving its photothermal conversion ability, organic photothermal agents IR780 is adsorbed on the surface of CNBC: Nd 3+ , Yb 3+ @SiO 2 to form monodispersed temperature self−monitoring photothermal agents CNBC: Nd 3+ , Yb 3+ @SiO 2 @IR780, where the temperature sensing property is based on the temperature−dependent lifetimes of Yb 3+ and the photothermal conversion property comes from the synergistic effect of IR780 and the nonradiative transition of Nd 3+ during luminescence. The maximum relative sensitivity and photothermal conversion efficiency of CNBC: Nd 3+ , Yb 3+ @SiO 2 @IR780 reach 1.44% K −1 at 280 K and 36.8%. Finally, the temperature detection and photothermal antimicrobial ability of CNBC: Nd 3+ , Yb 3+ @SiO 2 @IR780 are evaluated through chicken tissue temperature measurement and photothermal ablation effect against Escherichia coli and Staphylococcus aureus (93.3% and 95.1%).
研究领域:
材料科学
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纳米技术
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光学材料
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生物医学工程
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光热治疗
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DOI
高影响因子
Biomaterials Science
·
2019
·Vol. 7
·期 4
·1686-1695
·
IF 5.251
Man Yang,Han Wang,Zhaohui Wang,Zhihao Han,Yueqing Gu
The efficacy of photodynamic therapy (PDT) was greatly hindered by the use of a 980 nm laser with undesired overheating effects as well as low reactive oxygen species (ROS) yields. Herein, we address these problems using a dual-photosensitizer (PS) loaded upconversion nanoparticle (UCNP) system. In detail, the NaYF4:Yb/Er/Nd@NaYF4:Nd core–shell UCNP system was designed to exhibit 808 nm laser excitation ability to avoid unfavorable thermal effects. More importantly, the co-encapsulation of dual PS, in terms of merocyanine 540 (MC540) and zinc phthalocyanine (ZnPc), could be respectively triggered by the dual emissions of UCNPs, which could generate sufficient ROS with improved efficiency. Furthermore, in vitro and in vivo studies were conducted to confirm the folate receptor (FR)-overexpressed cancer cell- or tumor-specific targeting ability with minimal side effects on normal tissue, by using this dual PS loaded UCNP system with the modification of the targeting group folic acid (FA). It is worth mentioning that the singlet oxygen production assay and PDT treatment demonstrated significantly enhanced PDT efficacy of the dual-PS approach, in comparison with the single PS method. In short, the FR-targeted dual-PS nanoconstructs maximized the anti-tumor efficacy of PDT by taking advantage of dual fluorescence emission and 808 nm excitation of UCNPs, which might inspire the future development of noninvasive deep-seated tumor treatment.
研究领域:
生物医学工程
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纳米医学
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肿瘤学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
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IF 5.1
XinLong Shang,Yang Li,Liang Chen,Quan Zhang,Leidang Zhou,Naizhe Zhao,Jinlu Ruan,Shiyi He,Fangbao Wang,Yapeng Zhang,Xiaoping Ouyang
Strategic incorporation of heterogeneous elements through doping has emerged as a prominent methodology for optimizing the performance of halide perovskites. However, due to inherent self-purification mechanisms during crystal growth, achieving desired doping levels usually requires substantially elevated feeding ratios of dopants in precursor. High feeding ratios notably induce burst nucleation during seed generation, especially for 2D perovskites, which presents particular challenges in single-crystal fabrication. Herein, we developed a fragments-induced crystallization (FIC) methodology for synthesizing individualized neodymium (Nd) doped seeds of 2D perovskites. This approach utilizes easily-produced undoped single crystals that are mechanically processed into crystalline fragments to create preferential nucleation sites. The FIC protocol enabled efficient production of monodisperse 1-3 mm-scale seeds and subsequent growth of centimeter-sized bulk single crystals. Successful Nd3+ substitution at Pb2+ sites with proportions varying from 0.04% to 3.43% was achieved. The doped perovskites showed a linear luminescent response up to 173 mGy s-1. Notably, they displayed differentially reduced decay lifetimes under excitation of ultraviolet light, α-rays, and γ-rays, signifying substantial potential for radiation discrimination. Nearly unchanged photoluminescence (PL) and X-ray luminescence (XRL) patterns indicated that Nd3+ worked not by forming new luminescent centers but by regulating luminescence of 2D perovskites. This study provides a methodology to effectively mitigate burst nucleation in heavily-doped precursors and to shorten the preparation Nd3+-doped single crystals. Doping with Nd3+ also shows a way to develop fast perovskite scintillators by tailoring their response time.
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高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Ziyi Niu,Pengfei Zhang,Wenbo Chen,Junyang Xia,Zhili Zhang,Jinwei Liu,Yanyan Li,Bitao Liu,Lei Zhao
Near-infrared (NIR) mechanoluminescence (ML) holds significant promise for in vivo biomechanical detection and imaging due to its self-powered excitation and self-recovery capabilities. However, its broader application remains constrained by the limited availability of suitable ML materials and the narrow spectral range of NIR emission. In this study, we report the Y 3 Ga 5 O 12 (YGO): Cr 3+ , Nd 3+ , Yb 3+ /polydimethylsiloxane (PDMS) NIR-ML composite with broadband NIR emission tunable from 600 to 1100 nm, covering both the NIR-I and NIR-II windows. The ML of composite device is driven by an interfacial triboelectric effect arising from the mechanical interaction between the inorganic particles and the polymer matrix. Comparative studies on photon penetration through biological tissues reveal that co-doping with Nd 3+ and Yb 3+ markedly enhances tissue penetration depth. Specifically, the luminescence decay rate in biological tissues is reduced by 20.8% relative to Cr 3+ single doping, indicating improved optical persistence and signal transmission. These findings demonstrate the potential of full-spectrum NIR-ML devices for high-resolution, deep-tissue biomechanical sensing and imaging. This work provides a generalizable design strategy for the development of broadband NIR-ML materials tailored for in vivo mechanical diagnostics.
研究领域:
材料科学
·
生物医学工程
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光学成像
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机械发光
·
体内传感
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DOI
高影响因子
危险品化学品经营许可证（带存储）