Journal of Physical Chemistry C
·
2026
·
IF 3.4
Ting Zhao,Lin Ma,Haoyang Guan,Chaofan Guo,Qian Zhang,Yuhang Huang,Weiran Chen,Taifeng Lin,Jiawen Xiao,Zheng-Guang Yan
Rare-earth (RE) doping has proven to be effective in enhancing the luminescent and optoelectronic properties of halide perovskites (HPs). However, the growth of RE-doped halide perovskite single crystals remains challenging. Herein, we successfully synthesized nine distinct MAPbBr3:RE (RE = Yb, Eu, Tb) single crystals (6–8 mm in size, RE/Pb = 0.008–0.053%) through systematic optimization of RE reagents, growth temperature, and solution concentration. Structural and optical characterization revealed RE-induced lattice expansion and band gap modulation, confirming the effective incorporation into the perovskite lattice. Furthermore, RE doping significantly improved the charge transport properties of MAPbBr3 single crystals. After doping Yb into MAPbBr3 (Yb/Pb = 0.013%), the trap density decreased from 9.2 × 109 to 2.5 × 109/cm3, carrier mobility increased from 59 to 799 cm2/(V s), and carrier lifetime increased from 199 to 2766 ns. These enhancements translated to exceptional γ-ray detection performance, with the energy resolution (ER) value for 241Am (59.5 keV) improved from 11.0% (for pristine MAPbBr3) to 6.3% (MAPbBr3:Yb) under a 5 V bias. This work not only establishes RE doping as a powerful strategy for optimizing the properties of halide perovskite semiconductors but also opens new avenues for the development of advanced radiation sensing materials.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Huihui Zhang,Qi Kang,Xuwei Chen
Anthrax is a serious zoonotic disease caused by Bacillus anthracis and dipicolinic acid (DPA) is the key component and major biomarker of Bacillus anthracis, therefore the development of rapid and sensitive DPA detection method is crucial to ensure public safety. In present study, carboxyl-functionalized covalent organic framework TpPa-COOH was synthesized using 2,5-diaminobenzoic acid and 2,4,6-triformylphloroglucinol as the building blocks, then Eu 3+ was immobilized onto TpPa-COOH via coordination interaction to give the fluorescent composite TpPa-COOH@Eu 3+ of dual-emissions. The presence of DPA significantly enhanced the characteristic emission of TpPa-COOH@Eu 3+ at 616 nm attributed by the “antenna effect” between DPA and Eu 3+ , thus a ratiometric fluorescent sensor was developed for the sensitive DPA detection with a detection limit of 9.5 nmol L −1 . The ratiometric fluorescent sensor offered DPA detection with high accuracy and favorable selectivity. The practicability of fluorescence sensor was validated by detecting DPA contents in real water samples. This research not only proposes a sensitive fluorescence method for anthrax biomarker detection, aiding in the prevention of biological threats and disease spread, but also highlights the potential of COFs in developing efficient ratiometric fluorescent probes with self-calibration capabilities.
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ACS Applied Optical Materials
·
2026
·
IF 3.4
Chaofan Wang,Gen Li,Ziran Li,Dixi Ke,Haocheng Li,Junwen Huang,Ziang Wan,Mengyao Zhu,Han Zhang,Jiejun Ren,Min Zeng,Yuebin Li
Phosphor-converted light-emitting diodes (pc-LEDs) represent a key technology in solid-state lighting. However, their performance and reliability are often limited by the thermal instability of conventional phosphors under high-power operation. To address this challenge, this study reports two thermally stable red-emitting phosphors, NaYMgWO6:Sm3+ and NaYMgWO6:Eu3+, synthesized via a high-temperature solid-state reaction method. A remarkable abnormal thermal quenching behavior is observed in NaY0.97MgWO6:0.03Sm3+, whose luminescence intensity at 348 K exceeds the room-temperature value. Meanwhile, NaY0.7MgWO6:0.3Eu3+ exhibits outstanding thermal stability, retaining 80.82% of its room-temperature emission intensity at 423 K. Under near-UV and blue excitation, NaYMgWO6:Sm3+ and NaYMgWO6:Eu3+ emit intense orange-red (645 nm) and red (615 nm) light with high color purity values of 85.81% and 96.58%, respectively, and show negligible chromaticity drift up to 448 K. Notably, the internal quantum efficiency reaches 27.59% for the Sm3+-doped phosphor and 88.86% for the Eu3+-doped counterpart. Practical application is demonstrated through fabricated pc-LED prototypes, which produce bright orange-red and red emissions. Furthermore, when incorporated into white LED devices along with a commercial yellow phosphor and a blue chip, the developed red phosphors effectively compensate for the spectral deficiency in the red region, significantly improving the color rendering performance and yielding warm white light with a high color quality. These results highlight the promising potential of the developed NaYMgWO6:Sm3+/Eu3+ phosphors for high-stability solid-state lighting applications.
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高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Yuqing Yang,Shicong Pei,Mingdi Yang,Kehua Zhang,Jie Jin,Yunsheng Ding,Xianhai Hu
Full-color fluorescent tunable materials have attracted much attention due to their broad application prospects in fields such as lighting, display devices, and biological imaging. However, it remains challenging to prepare environmentally friendly full-color fluorescent tunable materials through simple and efficient methods. Herein, a series of amino-functionalized complexes were synthesized, and, via covalent bonding, a color-tunable waterborne polyurethane system (WPU-Eu 1-x-y Tb x Zn y ) was developed, exhibiting both full-color and white fluorescence. In addition, due to the inherent differences in the ultraviolet absorption properties of each complex, the emission color can be further adjusted by changing the excitation wavelength. This dual mechanism enables both preset and dynamic color adjustments, providing various possibilities for applications such as anti-counterfeiting and display technologies. More importantly, WPU-Eu 1-x-y Tb x Zn y uses water as a dispersant, has a low VOC content, and is particularly safe and environmentally friendly.
研究领域:
材料科学
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光学
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环境科学
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高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Guihua Cui,Yu Bai,Wenliang Li,Zhengguo Gao,Shuiying Chen,Nannan Qiu,Toshifumi Satoh,Toyoji Kakuchi,Qian Duan
A series of chain-end functional polymers composed of poly( N -isopropylacrylamide) (PNIPAM) and 2-amino-2-deoxy- d -glucopyranose( d -glucosamine, GA) was synthesized via atom transfer radical polymerization (ATRP). Novel fluorescent complexes of glucosamine-PNI- PAM/Eu(III) were then formed by chelation of the polymers and europium(III) ions. The aqueous solutions of the polymers and its Eu(III) complexes exhibited a lower critical solution temperatures (LCSTs), and which were approximately equal to body temperature. Cell viability assays suggested that these thermosensitive polymers and Eu(III) complexes showed excellent biocompatibility in vitro.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Jun Sun,Bei Zhang,Wei Zhu,Feifei Huang,Ruoshan Lei,Hongping Ma,Renguang Ye,Youjie Hua,Shiqing Xu
High-efficiency phosphor with excellent luminescence properties and thermal stabilities is essential for phosphor-converted white light-emitting diodes (w-LEDs). Compared with red and green phosphors, near-ultraviolet excited blue phosphors with high efficiency and excellent thermal stability are still scarce, and the development of efficient blue phosphors remains challenging. NaLi 3 SiO 4 : Eu 2+ (NLSO: Eu 2+ ) is a promising narrow-band blue phosphor. In this paper, a series of Na 1-y K y Li 3 SiO 4 : 5%Eu 2+ (0.05 ≤ y ≤ 0.2) phosphors were successfully synthesized by high-temperature solid-state reaction through co-doping a small amount of K + ions in the matrix, significantly improving their luminescence property and thermal stability. Because of the weaker electronegativity of K + ions, the emission peaks of Na 1-y K y Li 3 SiO 4 : 5%Eu 2+ were slightly blue-shifted from 467 to 463 nm compared with those of NLSO: Eu 2+ . With an increase in the number of K + ions, the luminescence intensity of the phosphors increased. When the content of the K + ion reached 0.2, the luminescence intensity of the Na 0.8 K 0.2 Li 3 SiO 4 : 5%Eu 2+ (NKLSO: 5%Eu 2+ ) phosphor reached its maximum. Compared to the NLSO: 5%Eu 2+ phosphor, the luminescence intensity increased by approximately 300 %. At 150 °C, the luminescence intensity of NLSO: 5%Eu 2+ phosphor was retained at 75.98 % compared with room temperature , while the NKLSO: 5%Eu 2+ phosphor maintained a luminescence intensity of 84.36 % relative to room temperature, demonstrating excellent thermal stability. The enhanced luminescence performance of the NKLSO: Eu 2+ phosphor makes it a promising high-efficiency blue phosphor for phosphor-converted w-LEDs.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Ping Feng,Sheng-Hua Zhou,Bing-Xuan Li,Jia-Xiang Zhang,Mao-Yin Ran,Xin-Tao Wu,Hua Lin,Qi-Long Zhu
In recent years, rare-earth-based chalcogenides have gained attention promising materials in the field of infrared nonlinear optical (IR-NLO) applications owing to their exceptional physicochemical properties. However, they frequently encounter challenges such as adverse two-photon absorption and low laser-induced damage thresholds (LIDTs) caused by narrow optical band gaps (Eg), which limit their practical utility. In this study, we started with the centrosymmetric (CS) parent compound EuGa2S4 to develop two new noncentrosymmetric (NCS) Eu-based chalcogenides, namely, EuZnSiS4 and EuCdSiS4, employing a rational cross-substitution strategy. Despite having identical stoichiometry, both compounds crystallize in distinct NCS orthorhombic space groups [Fdd2 (no. 43) vs Ama2 (no. 40)], as confirmed by single-crystal structure analysis. Their crystal structures feature highly distorted tetrahedral motifs interconnected via corner-sharing, forming unique two-dimensional layers that host Eu2+ cations. Furthermore, both compounds exhibit robust phase-matching second-harmonic generation (SHG) intensities of 1.5 × AgGaS2 for EuZnSiS4 and 2.8 × AgGaS2 for EuCdSiS4 under 2050 nm excitation. They also demonstrate high LIDTs (approximately 14–17 × AgGaS2), wide Eg (>2.5 eV), and transparency windows extending up to 18.2 μm. Particularly noteworthy, EuCdSiS4 stands out as a pioneering example in the Eu-based IR-NLO system for successfully combining a broad Eg (>2.56 eV, equivalent to that of AgGaS2) with a significant SHG effect (>1.0 × AgGaS2) simultaneously. Structural analyses and theoretical insights underscore that the reasonable combination of asymmetric functional units plays a pivotal role in driving the CS-to-NCS structural transformation and enhancing the NLO and linear optical properties of these Eu-based chalcogenides. This study presents a promising chemical pathway for advancing rare-earth-based functional materials and suggests exciting opportunities for their future applications in IR-NLO technologies.
研究领域:
材料科学
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光学材料
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红外光子学
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固态化学
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非线性光学
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高影响因子
JOURNAL OF LUMINESCENCE
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2024
·
IF 3.3
Wanyin Ge,Maohao Yang,Honglei Yin,Shifan Shang,Zili Luo,Xin Xie,Ye Tian
SiAlON-based phosphors have garnered considerable attention in the field of white lighting owing to their excellent thermal stability, and rare earth doped SiAlON-based phosphors are expected to be used in a new generation of lighting sources. In this work, Eu 2+ or Ce 3+ doped Si 3 Al 3 O 3 N 5 phosphors were synthesized by high temperature solid phase method. The microstructure of the phosphors exhibited irregular grain. The two phosphors exhibit green and cyan luminescence under 365 nm excitation, which are derived from the 5 d -4 f transitions of Eu 2+ and Ce 3+ , respectively. The quenching concentrations are 3 % and 4 % for Eu 2+ and Ce 3+ doped phosphors , respectively. The fluorescence intensity of Eu 2+ and Ce 3+ activated SiAlON powders decreased to 50 % of the room temperature intensity at 179 °C and 170 °C, respectively. The thermal activation energy values of the two phosphors were 0.35 eV, and the coordinate configuration diagram was constructed to comprehensively analyze the thermal quenching behavior of phosphors. Finally, the two phosphors powders were mixed with red and blue fluorophore to obtain white LEDs, showing low color temperature, high color rendering, high power unsaturation and long half-life. The SiAlON-based phosphors with excellent thermal stability obtained in this work achieve different wavelengths of luminescence in the green region. The results show that the β -Si 3 Al 3 O 3 N 5 phosphor can be used as a candidate material for high-quality green light supplement for wLEDs .
研究领域:
材料科学
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光电子学
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发光材料
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固态照明
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高影响因子
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
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2026
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IF 2.1
Mingwei Wang,Hongyu Wen,Xiaoshi Lai,Zekai Zheng,Xin Wen,Junju Xu,Mingliang Kang,Hanyu Wu
Elucidating the immobilization mechanisms of radionuclides within heterogeneous host rocks is significant for the long-term safety assessment of high-level radioactive waste (HLW) geological repositories. This work evaluates the immobilization of Eu(III)—as a surrogate for trivalent actinide ions—on heterogeneous Tamusu claystones, focusing on the coupling effects of mineralogy and temperature (25–80 °C). At 25 °C, Eu(III) adsorption is governed primarily by the analcime content. Under elevated temperatures (50 °C and 80 °C), however, a contrast in retention behavior emerges between lithologies. Analcime-rich samples maintain high sorption stability (with the mineralogical ratio of (dolomite + ankerite)/analcime serving as a proxy for retention performance), whereas carbonate-rich samples exhibit complex behavior driven by the thermally induced dissolution of dolomite and ankerite. Thermodynamic modeling indicates that temperature elevation facilitates carbonate dissolution and shifts the dominant aqueous species at pH ∼9.3 from EuOH(CO 3 ) 2 - to EuOHCO 3 (s), thereby strengthening the retention capacity of Tamusu claystone to Eu(III)/Am(III). X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) evidence reveal that Eu(III) retention is driven by a dual mechanism: ion exchange on analcime lattices and inner-sphere surface complexation on carbonate minerals. Therefore, dolomite/ankerite-rich samples may enhance Eu(III)/Am(III) immobilization through carbonate dissolution, and analcime-rich samples offer greater long-term predictability and stability. These trends are dependent on both temperature and pH changes. The findings highlight the synergistic role of mineral phases and radionuclide immobilization under near-field thermal conditions and provide essential thermodynamic data for radionuclide migration modeling and assessing the repository performance.
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PubMed
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2023
·
IF 2.7
Huicai Xie,Zhaojun Mo,Quanyi Liu,Hao Sun,Shengcan Ma,Xinqiang Gao,Jun Shen
EuTiO 3 exhibits various interesting physical properties, including magnetocaloric effect, quantum paraelectricity, magnetoelectricity, and multiferroic properties, thus attracting a broad range of attention from the researchers. The delicate balance between ferromagnetic coupling and antiferromagnetic interactions offers the feasibility of modulating the magnetic properties and magnetocaloric effect for this perovskite. Herein, a range of Eu(Ti,B)O 3 perovskites were prepared by substituting titanium with different amounts of boron. A comprehensive investigation on their structure, magnetism, magnetocaloric effect, and critical behavior was performed. All the compounds are confirmed to be crystallized in a single cubic perovskite structure with space symmetry of Pm 3 m , with the introduced boron uniformly distributed in the compounds. The transition temperatures are determined to be 6.0, 6.5, 5.0, and 5.0 K for EuTi 0.9375 B 0.0625 O 3 , EuTi 0.875 B 0.125 O 3 , EuTi 0.8125 B 0.1875 O 3 , and EuTi 0.75 B 0.25 O 3 , respectively. The results of both magnetic measurements and critical behavior analysis suggest that appropriate substitution of boron promotes the magnetic transition from AFM to FM in Eu(Ti,B)O 3 . In addition, significantly enhanced low-field magnetocaloric effects were observed in these perovskites. Under field changes of 0–1 and 0–2 T, the values of - Δ S M max are 14.7 and 26.4 J·kg −1 ·K −1 for EuTi 0.8125 B 0.1875 O 3 , 15.2 and 27.4 J·kg −1 ·K −1 for EuTi 0.75 B 0.25 O 3 , respectively.
研究领域:
凝聚态物理
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材料科学
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磁性材料
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钙钛矿氧化物
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固态化学
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DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Chuangchang Lei,Xiang Wu,Yaohua Li,Xu Xu,Guangzheng Zuo,Qiongrong Ou,Shuyu Zhang
Europium halide perovskites have emerged as promising candidates for environmental-friendly blue-emitting materials. However, their development is hindered by low photoluminescence quantum yields (PLQY, e.g. ∼2%–5% for intrinsic CsEuCl 3 ) and poor stability against air. Here, a one-step procedure is introduced for synthesizing Eu 2+ -doped CsSrCl 3 large nanocrystal clusters (CsSrCl 3 :Eu LNCs) with the effect of self-reduction, eliminating the use of conventional reductant oleylamine (OAm) and ensuring phase purity. CsSrCl 3 :Eu LNCs show photoluminescence emission centered at 430 nm with a full width at half maximum (FWHM) of 25 nm and a PLQY of ∼40%, which can be further enhanced to ∼97% after passivating the surface defects by adding trioctylphosphine (TOP), the highest among all reported lead-free blue-emitting perovskite nanocrystals. The stability of CsSrCl 3 :Eu can also be improved significantly by epitaxially growing a ZnS shell on the surface. This work will shed more light on lanthanide and alkaline-earth metal (AEM)-based perovskites for nontoxic light-emitting materials.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2016
·Vol. 45
·期 6
·2974-2980
·
IF 1.491
Zheng Yuhui,Hu Jing,Deng Surong,Gao Jinwei,Wang Qianming
High-purity LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm, Dy) phosphors with tetragonal zircon structures were successfully synthesized. The reactions have been carried out by multiple irradiations with very high efficiency. Transmission electron microscope images showed that the phosphors had rod-like structures with average lengths of about 200 nm. The host absorption edge of LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm) shifted to the longer wavelength side. Furthermore, the red emission of Eu 3+ ion and the orange emission of Sm 3+ ion are remarkably enhanced by encapsulating Bi 3+ in LuVO 4 system, whereas in the case of LuVO 4 : Dy 3+ /Bi 3+ , the host absorption and the yellow emission from dysprosium have been suppressed in the presence of Bi 3+ . These novel findings will facilitate their use in the display field.
研究领域:
材料科学
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光学材料
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发光材料
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无机化学
·
纳米材料
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DOI
高影响因子
危险品化学品经营许可证（带存储）