SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Xiaohuan Long,Yingfang Li,Jiahong Xiong,Mo Zhou,Weichu Liang,Haixi Huang,Chaoyong Deng,Weichao Huang
Pr 3+ -doped NaYTi 2 O 6 phosphors show strong red emission and persistent luminescence. • Dual-mode thermometry gives maximum relative sensitivities of 2.77%K −1 and 4.02%K −1 . • Red persistent-luminescence decay enables time-resolved dynamic anti-counterfeiting. Developing multifunctional phosphors suitable for both anti-counterfeiting and optical thermometry applications remains challenge. Herein, a series of NaYTi 2 O 6 : Pr 3+ phosphors were synthesized, and their luminescence properties, temperature sensitivity and potential applications were systematically investigated. Under ultraviolet excitation, the phosphors exhibited prominent red emission at 614 nm ( 1 D 2 → 3 H 4 ) along with weaker emissions centered at 690 nm ( 3 P 0 → 3 F 3 ). Notably, red persistent luminescence (PersL) can also be observed from the NaYTi 2 O 6 : Pr 3+ phosphor. Based on thermoluminescence analysis, a feasible persistent afterglow mechanism of the phosphors was presented and discussed. Furthermore, luminescent patterns are fabricated by utilizing these phosphors as inks for anti-counterfeiting applications. In addition, the thermometric mode based on the normalized integrated intensity over 580–650 nm delivers a maximum relative sensitivity ( S r ) of 2.77%K −1 . Further FIR thermometry constructed from the Pr 3+ 1 D 2 → 3 H 4 and 3 P 0 → 3 F 3 transitions achieves a higher maximum S r of 4.02%K −1 . These results indicate that NaYTi 2 O 6 : Pr 3+ phosphor with persistent luminescence has potential applications in anti-counterfeiting and optical thermometry. Download: Download high-res image (90KB) Download: Download full-size image
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高影响因子
Applied Sciences-Basel
·
2024
·Vol. 14
·期 7
·2947
·
IF 2.5
Yang Hua,Zhenfeng Jing,Pinghui Ge
In this research, a comprehensive series of Pr3+-doped lithium niobate and sodium niobate materials were obtained at different temperatures via solid-state sintering, and their structures and properties were compared. NaNbO3: 0.75% Pr3+phosphors were synthesized by sintering at 1150 °C for 2 h and emitted red persistent luminescence for more than 1200 s, peaking at 612 nm under UV excitation, which was a typical long persistent luminescence phenomenon. Furthermore, the sample glowed when pressurized, and a red bright luminescence which lasted for several seconds was visible to the naked eye. This was a typical mechanical luminescence phenomenon of samples under mechanical stress, directly converting mechanical energy into light energy. It was determined that NaNbO3:Pr3+and LiNbO3:Pr3+both possess multimode luminescence. Owing to their red long persistent luminescence (LPL) and mechano-luminescence (ML) properties, Pr3+phosphors can be employed in fields, such as display technologies, stress sensing, structural damage detection, and other complex applications.
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International Journal of Applied Ceramic Technology
·
2023
·Vol. 20
·期 6
·3357-3364
·
IF 2.1
Chen Jiang,Rui Zhang,Lidan Han,Yanhui Chen
Persistent luminescence (PersL) phosphors are considered as promising candidates for the next generation of information storage medium. Mg 4 Ga 4 Ge 3 O 16 (MGG) is an electron trapping material which exhibits defect luminescence, and the luminescent properties are easily tuned via doping various activated ions. In this work, undoped and Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG phosphors were synthesized via high temperature solid phase reactions. X-ray diffraction and scanning electron microscope results confirm that the activated ions tend to occupy Mg 2+ sites. Excited at 265 nm, the MGG host exhibits a defect emission band peaked at 450 nm. Red, pink and green emissions are observed in the Mn 2+ /Pr 3+ /Tb 3+ single-doped MGG samples, which are ascribed to the Mn 2+ : 4 T 1 (G) → 6 A 1 (S), Pr 3+ : 1 D 2 → 3 H 4 and Tb 3+ : 5 D 4 → 7 F 5 transitions, respectively. All the samples exhibit bright PersL for minutes after the cessation of excitation. The energy transfer, concentration quenching, luminescence decay and afterglow mechanisms are also discussed in detail. The phosphors exhibit efficient thermal and optical stimuli response, showing great potentials in the optical information storage.
研究领域:
材料科学
·
光学
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Hongwei Zheng,Xiaoming Wang,Zhuo Li,Tianhui Liu,Hui Fu,Hu Zhang,Zupei Yang,Huan Jiao
The exploration of new luminescent materials is driven by potential applications in solid-state lighting and display technologies. In this paper, we employed an anionic condensation approach to craft novel oxonitridosilicate compounds by substituting 3O2– with 2N3– in a carefully selected system. This approach enabled us to synthesize a highly condensed oxonitridosilicate compound LaSr4Si5N9O2, which crystallizes in the orthorhombic crystal system with the space group Ama2 (no. 40) and lattice parameters a = 9.2986(1) Å, b = 23.4382(1) Å, c = 5.371(1) Å, V = 1170.55(1) Å3, and Z = 4. The condensation appears inside the layer, with dreier rings originating from neighboring tetrahedra connected by bridging nitride (N[2]). This enriches the possibility of using the approach to design multiple layered or other featured oxonitridosilicates. Furthermore, we investigated the luminescence properties when doped with rare-earth ions. The Pr3+-doped LaSr4Si5N9O2 exhibits a remarkably narrow-band red emission (λem ≈ 618 nm, fwhm ≈ 54 nm) when excited by UV and blue light.
研究领域:
材料科学
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固态照明
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显示技术
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhikang Wang,Fan Gao,Gang Huang,Yuhan Zhou,Baorong Duan,Jianqiang Chen,Ye Wang,Yuan Chen,Yanqing Wang
Titanium niobium oxide (TiNb₂O₇, TNO) holds great promise as an anode material for lithium-ion batteries but is hindered by insufficient intrinsic capacity and sluggish Li + diffusion kinetics in practical applications. Herein, we report a high-performance TNO-based nanocomposite fabricated via a synergistic strategy integrating Pr 3+ doping and encapsulation in a N/O/S tri-doped honeycomb-like porous carbon framework. Pr 3+ ions with a large ionic radius (1.126 Å) are incorporated into TNO nanospheres (100–200 nm), inducing oxygen vacancies and lattice expansion to broaden ion diffusion pathways and accelerate Li + transport. Simultaneously, the tri-doped honeycomb carbon serves as a three-dimensional conductive network, efficiently buffers volume variations during cycling, and constructs robust Ti–O–C heterointerfaces, which collectively reduce Li + diffusion barriers. Benefiting from these synergistic effects, the optimized composite exhibits exceptional electrochemical performance: the half-cell delivers a specific capacity of 205.61 mAh g −1 at 20C and retains 174.79 mAh g −1 after 2000 cycles (retention rate > 85%), whereas the full-cell assembled with a LiFePO₄ cathode maintains 115.39 mAh g −1 after 2000 cycles at 10C. This work highlights that the synergistic integration of Pr 3+ doping and carbon heterointerface engineering significantly enhances the lithium storage kinetics and structural stability of TNO-based anodes, offering a promising strategy for the development of advanced high-performance lithium-ion battery electrodes.
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高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Jialing Li,Xiaoming Wang,Yongkang Zheng,Jiayao Zhang,Congling Yin,Xiaohui Li,Tianhui Liu,Zupei Yang,Huan Jiao
A novel oxonitridosilicate, Li2La8Si6N12O7 was successfully synthesized at 1200 °C using Li3N as a flux. The crystal structure was determined through single-crystal and synchrotron powder X-ray diffraction. Li2La8Si6N12O7 crystallizes in orthorhombic space group Pcca (no. 54) with unit-cell parameters a = 15.5319(1) Å, b = 7.7382(1) Å, c = 15.5019(1) Å, and Z = 4. The structure features a layered framework built from vertex-sharing Si[N/O]4 tetrahedra, with Li[N/O]6 octahedra connecting and stabilizing both the interlayer and intralayer linkages. The octahedral coordination of Li+ was confirmed by solid-state 7Li NMR spectroscopy. Notably, the incorporation of Pr3+ and Tb3+ into the Li2La8Si6N12O7 host yields narrow-band red emission at 630 nm and green emission at 545 nm. This combination facilitates the fabrication of 365 nm near-ultraviolet light-emitting diode (UV LED) chip-based WLEDs with superior color rendering performance.
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.4
Yixi Lu,Donglan Lu,Bin Cao,Tingting Zhang,Hai Wu,Wanyin Wu,Chaoyong Deng,Weichao Huang
Optical thermometry has gained significant attention for its non-invasiveness, high sensitivity, and fast response. Herein, the Pr 3+ activated La 3 SnGa 5 O 14 optical thermometer phosphors were prepared by a high-temperature solid-state method, and their crystal structure, optical properties, and temperature sensitivity of the phosphors were investigated systematically. Under excitation at 450 nm, the La 3 SnGa 5 O 14 : Pr 3+ phosphor exhibits emission bands ranging from the blue to red region. Notably, it was found that the intensity of emission peaking at 530 nm increases with rising temperature, showing a clear inverse temperature dependence compared with the other emission peaks. Based on the abnormal thermal quenching phenomenon, an optical thermometry model was developed using the fluorescence intensity ratio, exhibiting high performance with a maximum relative sensitivity of 0.788 % K −1 and absolute sensitivity of 6.452 % K −1 . This indicates that La 3 SnGa 5 O 14 : Pr 3+ phosphors have potential application value in the field of optical thermometry.
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 47
·期 22
·31329-31336
·
IF 4.527
Dehua Wang,Hongwei He,Xiaoxiong Wang,Yang Yu,Longlong Jiang,Ye Lu,Jing Yu,Jun Zhang,Yunze Long,Keqing Ruan
Traditional inorganic materials exhibit rigidity owing to the lack of polymer chains in polymer materials or atom slipping in metals. However, nanometerization has been recently proposed for the conversion of inorganic oxide materials into flexible materials. Herein, the flexible inorganic luminescent material , CaTiO 3 :0.2%Pr 3+ , was synthesized through electrospinning, and the macroscopic flexibility of pure inorganic CaTiO 3 :0.2%Pr 3+ was achieved. The flexible membrane was characterized via X-ray diffraction, thermogravimetry , scanning electron microscopy (SEM), and photoluminescence analyses. The grain size was analyzed at various calcination temperatures via SEM, and the results suggested that the increase in the calcination temperature resulted in the growth of crystal grains. Studies have reported that the growth of crystal grains is beneficial for improving the luminescence performance; however, to obtain better flexibility, smaller crystal grains are required. This study provides an important reference for the design of flexible inorganic materials.
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高影响因子
ACS Applied Electronic Materials
·
2021
·
IF 3.314
Xianghua Wang,Zhiliang Xu,Shaoqi Zhuo,Peng Hu,Yong Yang,Bin Zhou,Wen-Hua Zhang
High performance CsPbBr3 nanocrystals (NCs) were synthesized via a hot injection method followed by a room-temperature ligand exchange modification using 3-mercaptopropyltrimethoxysilane (MPTMS). The ligand exchange promotes crystal growth and enhances the photoluminescence quantum yield (PLQY) of the NCs to near unity. The oscillator strength of the interband transition based on UV–vis absorption was surprisingly amplified by a factor of 2.5. The NC’s surface was passivated via S–Pb polar covalent bonding, which shifts the thermodynamic equilibrium and favors NC growth with a higher Br-to-Pb atomic ratio on the surface. Moreover, the perovskite lattice was strained by a cross-linked polymeric network of self-condensed siloxane. The strain within CsPbBr3 NCs was modulated by mixing at room temperature with Cs3PrCl6 NCs for controlled halide exchange and Pr doping; thereby blue emission from the Pr-doped CsPb(Cl/Br)3 NCs was achieved with optimized brightness (PLQY = 88%) at 464 nm.
研究领域:
材料科学
·
光学
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DOI
高影响因子
RADIATION PHYSICS AND CHEMISTRY
·
2026
·
IF 3.5
Mei Yang,Xin Chen,Xuezhu Sha,Yuhan Fan,Xizhen Zhang,Jinsu Zhang,Yongze Cao,Yichao Wang,Xiangping Li,Sai Xu,Hongquan Yu,Baojiu Chen
This work aims to explore the quantum cutting mechanisms and efficiency of Pr 3+ /Yb 3+ co-doped NaLu(WO 4 ) 2 phosphors synthesized via a high-temperature solid state reaction. To optimize Pr 3+ doping concentration, the spectral properties of Pr 3+ single-doped NaLu(WO 4 ) 2 phosphors were examined. The optimum Pr 3+ concentration was found to be 5 mol%, at which the emission intensity from the 3 P 0 level reaches a maximum. Moreover, spectroscopic and dynamic analyses further indicated that the concentration quenching of 3 P 0 and 1 G 4 levels occurs via electric dipole-dipole interaction between Pr 3+ ions. The luminescence mechanisms in NaLu(WO 4 ) 2 : 5 mol% Pr 3+ , x mol% Yb 3+ phosphors were elucidated through the dependence of the steady spectroscopic properties on the Yb 3+ concentration. It was found that the infrared emission of Yb 3+ originates via two distinct pathways: one involves two-step energy transfers from Pr 3+ in 3 P 0 and 1 G 4 to Yb 3+ , namely 3 P 0 + 2 F 7/2 → 1 G 4 + 2 F 5/2 and 1 G 4 + 2 F 7/2 → 3 H 4 + 2 F 5/2 , and the other arises from direct sensitization of Yb 3+ by Pr 3+ in 1 D 2 via one-step energy transfer 1 D 2 + 2 F 7/2 → 3 F 4 + 2 F 5/2 . In addition, the Pr 3+ itself could produce an infrared emission from 1 G 4 to 3 H 4 . Based on the confirmed luminescence mechanisms, the luminescence efficiencies of the Pr 3+ /Yb 3+ co-doped NaLu(WO 4 ) 2 phosphors were calculated by taking the corresponding energy transfer efficiencies, radiative transition efficiencies, and non-radiative transition efficiencies, and the factors influencing the total luminescence efficiency were analyzed.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 49
·期 20
·32635-32641
·
IF 5.2
Huimin Li,Ran Pang,Lihong Jiang,Da Li,Su Zhang,Hongjie Zhang
The optical contactless thermometer demonstrates remarkable advantages over traditional contact thermometers. However, maintaining a strong optical signal output across a wide temperature range poses a challenge due to the thermal quenching effect. In this study, we aimed to overcome the limitation of low signal intensity in high-temperature applications by developing a Pr 3+ -doped BaSc 2 Ge 3 O 10 (BSGO) phosphor with anti-thermal quenching properties. This phosphor was designed to ensure a stable and sufficiently strong light signal for accurate temperature measurements. The phosphor exhibited a negative thermal quenching effect, where the integrated emission intensity spanning from 450 nm to 800 nm increased from 173 K to 253 K, and the intensity at 353 K still remained stronger than at 173 K. Multiple 4f-4f transition emissions were observed in the phosphor, and the fluorescence intensity ratio (FIR) was utilized as a standard parameter for temperature evaluation ranging from 82 K to 353 K. At 82 K, the phosphor achieved maximum relative sensitivity ( S r ) of 2.3% K −1 . The presence of multiple traps with depths ranging from 1.09 eV to 1.50 eV not only supported luminescence with a negative thermal quenching effect but also resulted in long persistent luminescence (LPL), which was systematically investigated in this study.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wang Dehua,Jiang Longlong,Yu Yang,Lu Ye,Meng Zifei,Bian Rui,Yao Wenle,Zhang Yongcheng,Long Yunze,Wang Xiaoxiong
Traditional inorganic ceramic materials usually exhibit macroscopic rigidity due to the incompatibility to the flexibility mechanism of traditional flexible materials such as sliding of polymer chains or atoms. Recently, new form of nanotechnology has been proposed to be capable of preparing inorganic flexible materials. In this paper, inorganic luminescent material (Ba,Ca)TiO 3 :Pr 3+ was prepared into the flexible form by electrospinning technology, and the macroscopic flexibility of pure inorganic (Ba,Ca)TiO 3 :Pr 3+ was systematic investigated. The crystal grain size was found to grow after higher temperature calcination , which benefits luminescence. However, lowering the calcination temperature will further optimize the flexibility of the membrane. This study shows that fibrous membrane fabrication is an applicable flexible fabrication strategy for inorganic oxides , which provides an important reference for the design of flexible materials.
研究领域:
材料科学
·
纳米技术
·
发光材料
·
陶瓷
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DOI
高影响因子
危险品化学品经营许可证（带存储）