JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 12
·8191-8205
·
IF 3.5
Haozhang Liang,Xiangtao Lin,Nanshan Ma,Longqing He,Juxia Tong,Zhiwei Luo,Lingying Ye,Anxian Lu
The Er 3+ /Yb 3+ co-doped tellurite glasses and glass-ceramics (GCs) containing the Gd 2 Te 6 O 15 phase were successfully fabricated via the conventional melting-quenching technique followed by a crystallization regime. The Er 3+ /Yb 3+ co-doped tellurite glasses generated intense up-conversion green (524 and 546 nm) and red (658 nm) emissions when stimulated by a 980 nm laser. The up-conversion green emission intensity increased by 68 and 46 times with the increase of the Yb 3+ /Er 3+ ratio, and the optimal Yb 3+ /Er 3+ ratio was found to be 8:1. The surface crystallization process of the Gd 2 Te 6 O 15 GCs was confirmed through analysis of crystallization kinetics and microscopic morphology. The up-conversion luminescence and lifetime of Er 3+ ions were enhanced by the precipitation of low-phonon-energy Gd 2 Te 6 O 15 crystals. The GC sample crystallized at 480°C for 4 h showed the highest luminescence intensity. The optical thermometry properties of Er 3+ ions at thermally coupled energy levels ( 2 H 11/2 / 4 S 3/2 → 4 I 15/2 ) were explored. The Gd 2 Te 6 O 15 GCs co-doped with 0.25 mol% Er 2 O 3 and 2.0 mol% Yb 2 O 3 exhibited an excellent temperature relative sensitivity ( S r ) of 1.22% K −1 at 293 K and a great repeatability of 98.07%. These results suggest that the Er 3+ /Yb 3+ co-doped Gd 2 Te 6 O 15 GCs show promise for optical thermometry.
研究领域:
材料科学
·
光学
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DOI
高影响因子
Laser & Photonics Reviews
·
2024
·Vol. 19
·期 5
·2401522
·
IF 9.8
Huhui Fu,Wenfeng Xie,Yuanqi Qian,Xiao Li,Yaning Zhang,Jingbing Lu,Qi Xiong,Anhua Wu,Liangbi Su,M. Liu
Lanthanide (Ln 3+ )-doped upconversion nanocrystals (NCs) have attracted great attention due to their outstanding luminescent performance and wide applications in various fields. However, the preparation of most Ln 3+ -doped NCs requires rigorous conditions such as high reaction temperature, long reaction time, strict anhydrous and oxygen-free environment, and tedious post-treatment process. Herein, sub-100 nm Yb 3+ /Er 3+ codoped K 3 ZrF 7 octahedral NCs are prepared by an extremely simple coprecipitation method (10 s only at room temperature). The resulting NCs show excellent upconversion luminescence (UCL), significantly superior to both their conventional high-temperature-synthesized counterparts and the room-temperature-synthesized NaBiF 4 :Yb/Er controls. More importantly, abnormal thermally enhanced UCL over a temperature range from room temperature to 473 K is found in these K 3 ZrF 7 :Yb/Er NCs, making them promising candidates for ratiometric thermometry applications. By employing the luminescence intensity ratio between two non-thermally coupled energy levels of Er 3+ , namely 4 F 9/2 and 2 H 11/2 , these NCs display an extraordinarily high absolute sensitivity of 443.2% K −1 and a comparatively large relative sensitivity of 1.55% K −1 at room temperature. These results reveal that K 3 ZrF 7 :Yb/Er NCs can not only be facilely prepared via an ultrafast room-temperature synthesis, but also hold great potential in various areas such as optical temperature sensing and biological applications.
研究领域:
材料科学
·
光学
·
生物医学工程
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2019
·
IF 2.6
J.L. Liu,Y.B. Xiao,S.J. Huang,L.Y. Mao,W.C. Wang,Q.Y. Zhang
An Er 3+ -doped TeO 2 − Ta 2 O 5 − ZnO (TTZ) tellurite glass has been investigated to explore its possible application in mid-infrared laser glass and fiber lasers . Glass-forming region of the ternary TTZ glass system was determined based on the thermodynamic calculation and experiments. Physical and optical properties of the TTZ glass were characterized in detail by using Raman, different scanning calorimetry , luminescence spectra , and fluorescence decay curves. An intense 2.7 μm emission was observed in Er 3+ -doped TTZ glasses upon the excitation of 980 nm laser diode (LD). The excellent thermal stability ( △T max = 203 °C), low maximum phonon energy (~770 cm −1 ), high emission cross-section (0.82 × 10 −20 cm 2 ) and spectroscopic figure of merit (3.22 × 10 −24 cm 2 s) indicate that the Er 3+ -doped TTZ glass could be a promising candidate for efficient ~ 3 μm fiber lasers and amplifiers.
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高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 37
·10101-10105
·
IF 5.976
Xiangtong Zhang,Yu Zhang,Xiaoyu Zhang,Wenxu Yin,Yu Wang,Hua Wang,Min Lu,Zhiyang Li,Zhiyong Gu,William W. Yu
Lead halide perovskite nanocrystals (NCs) exhibit excellent tunable emissions covering the entire visible spectral region, but they do not emit near-infrared (NIR) light. We synthesized rare earth element doped CsPbCl3 NCs for NIR emission. The Yb3+ doped CsPbCl3 NCs emitted strong 986 nm NIR light; the Yb3+/Er3+ co-doped CsPbCl3 NCs emitted at 1533 nm. The total photoluminescence quantum yield (PL QY) of the CsPbCl3 NCs changed from 5.0% to 127.8% upon incorporating 2.0% Yb3+, a factor of 25.6 times enhancement. The material's stability was tested under continuous ultraviolet (365 nm) irradiation. The doped CsPbCl3 NCs exhibited a better stability than the undoped one. The PL intensity of the undoped CsPbCl3 NCs dropped to 20% of the initial value in 27 h, while the doped one took 85 h.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
光子学
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2013
·
IF 2.145
Yanling Liu,Feng Song,Jiadong Liu,Jun Zhang,Yin Yu,Hongyan Zhao
The enhanced luminescences of Er 3+ /Yb 3+ co-doped Y 2 Ti 2 O 7 films were demonstrated when silver/gold (Ag/Au) nanoparticles (NPs) were doped in the films. With the precipitation of the Ag nanoprisms, more intense green (525 nm, 546 nm), red (659 nm) upconversion (UC) emission bands and strong enhanced near infrared (NIR) emission were observed and the enhanced factors were up to 16.7, 15.6, 17.7 and 5.6 folds, respectively. The accordance between the local surface plasmon resonance of NPs and the UC emission band significantly increased the luminescence intensity. The efficiencies of the radiative emissions were enhanced also due to the hydroxyl groups primarily absorbed around the NPs.
研究领域:
材料科学
·
光子学
·
纳米技术
·
光学材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jianhai Fu,Qiqing Li,Yuping Jia,Fei Long,Dechao Gan,Chunxu Liu,Wang Wang,Haoran Chen,Xianggui Kong,Dabing Li,Yulei Chang
Ferroelectric Bi 4 Ti 3 O 12 (BIT), with a unique structure and superior ferroelectricity, can distort its lattice under an external electric field. Doping BIT with lanthanide ions (Ln 3+ ) is appealing as their luminescence intensity is sensitive to crystal symmetry changes, allowing effective modulation by an external electric field. However, current research on Ln 3+ -doped BIT primarily focuses on ceramic materials, which pose challenges for heterogeneous integration with devices. In this study, we synthesized Yb 3+ /Er 3+ -doped BIT thin films at various concentrations via the sol-gel method and systematically investigated their ferroelectric and luminescent properties. With a 0.5Yb/0.1Er doping ratio, we successfully achieved real-time, dynamic, and reversible regulation of the upconversion luminescence (UCL) intensity of BIT thin films by applying an external electric field. Furthermore, digitally encoded electrical signals were successfully converted by manipulating UCL emission into visible light intensity variation signals, and we visualized electrical logic and arithmetic operations. These findings offer new possibilities for developing information photonics applications, providing a novel approach to integrating ferroelectric and luminescent properties in thin-film materials for advanced technological applications.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 108
·期 12
·e70174
·
IF 3.8
Caixiang Gou,Wei Zeng,Wenxiao Chen,Mengdi Mei,Haoyang Wu,Shiye Qian,Jile Wang
A new cyan long-persistent luminescence phosphor, Ba 6 BO 3 Cl 9 : Eu 2+ , Er 3+ , was synthesized by high-temperature solid-state reaction. The thermoluminescence and afterglow properties of the phosphor were significantly improved by the co-doping of Er 3+ . The Ba 6 BO 3 Cl 9 : Eu 2+ , Er 3+ phosphor exhibited an emission peak in the range of 400–700 nm, centered at 472 nm under 355 nm excitation, which was attributed to the 4f 6 5d 1 -4f 7 transition of Eu 2+ . At the optimal doping concentration, the initial afterglow brightness of the Ba 6 BO 3 Cl 9 : 0.1% Eu 2+ , 0.1% Er 3+ sample reached 0.1 cd/m 2 , and the afterglow lasted for more than 1.3 h. In addition, the synthesized Ba 6 BO 3 Cl 9 : 0.1% Eu 2+ , 0.1% Er 3+ /polydimethylsiloxane composite elastomer exhibited a mechanoluminescent property.
研究领域:
材料科学
·
发光材料
·
固体光学性质
·
无机化学
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DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 24
·2301126
·
IF 9
Dongping Wen,Shanling Zuo,Chunfeng Huang,Zongqian Tan,Fuxi Lu,Yi Liang,Xiaoming Mo,Tao Lin,Sheng Cao,Jianrong Qiu,Jialong Zhao,Ping Chen
Excitation polarized upconversion luminescence (EPUL) from lanthanide ions has attracted considerable attention due to its wide applications in microfluidics, single particle tracking, security inks, and cell internal viscosity testing. However, controlling the degree of excitation polarization (DOEP) of the EPUL remains a significant challenge. Here, the modulation of the DOEP (from 0 to 0.5) of the EPUL from Er 3+ doped single nanorods by changing the concentration of doped Er 3+ , Yb 3+ , or Mn 2+ is systematically studied. By analyzing the lifetimes and disproportionate changes in luminescence intensities, it is found that optimizing Er 3+ , Yb 3+ , or Mn 2+ concentration can reduce non-radiative transition and population density in excited states, leading to the enhancement of the DOEP under a good alignment of transition dipoles. Furthermore, the possibility of anti-counterfeiting based on such tunable EPUL is illustrated. Three kinds of fine patterns with a small size of 10 µm are realized by assembling the single nanorods accurately via optical tweezers. The patterns and their EPUL guarantee double protection for the feasibility of anti-counterfeiting. The findings of this study offer insights into the EPUL from lanthanide ions and provide a microscale platform via the EPUL for the application of multidimensional information encoding and reconfigurable double anti-counterfeiting.
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高影响因子
Chinese Physics B
·
2022
·Vol. 31
·期 7
·078701
·
IF 1.652
Hua-Wei Deng,Di-Hu Chen
Multifunctional luminescent materials are attracting attention nowadays. In this work, monoclinic Gd2O3:Er3+ nanoparticles, which possess up-conversion luminescence and down-conversion luminescence properties, were successfully synthesized by laser ablation in liquid (LAL) technique. Up-conversion luminescence and down-conversion luminescence of monoclinic Gd2O3:Er3+ nanoparticles were got under the excitation of 980 nm and 379 nm, respectively. In addition, tunable luminescence was got. Furthermore, the cytotoxicity of the nanoparticles is low and the fluorescence of the nanoparticles in cell is also strong enough. The results indicate that the Gd2O3:Er3+ nanoparticles synthesized by LAL technique are promising candidates for bio-imaging or other fields that require controllable fluorescence.
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高影响因子
JOURNAL OF RARE EARTHS
·
2022
·
IF 4.632
Lingyun Li,Ziwei Zhou,Fazheng Huang,Senlin Peng,Yantang Huang,Guoqiang Wang,Xinxu Li,Fei-Fei Chen,Chengkai Yang,Xin-Xiong Li,Yan Yu
The Er 3+ doped double perovskite Ba 2 CaWO 6 crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio (FIR) of transitions from 2 H 11/2 and 4 S 3/2 to the lowered 4 I 15/2 level. However, the Ca 2+ vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal sensitivity. Here, the up-conversion luminescence and thermometric performance of Er 3+ , Yb 3+ doped Ba 2 CaWO 6 are tuned by tri-doping with alkaline ions. The Ca 2+ vacancy defect can be eliminated by the introduction of Na + , which occupies the Ca 2+ site when it is doped into Ba 2 CaWO 6 with Er 3+ and Yb 3+ . On the contrary, the doping of Cs + into Ba 2 CaWO 6 with Er 3+ and Yb 3+ enhances the defect concentration because it occupies the site of Ba 2+ . Thus, the tri-doping of Na + reduces the non-radiative probability and enhances the quantum efficiency of Er 3+ , leading to the improvement of the thermometric sensitivity of Ba 2 CaWO 6 . As a result, we get an excellent thermometric Ba 2 CaWO 6 :8%Yb 3+ ,3.5%Er 3+ ,6%Na + powder with a luminescence lifetime of 515 μs and maximum thermal sensitivity ( S r ) of 1.45%/K, which is more than three times higher than that of the BCWO:Er 3+ powder.
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高影响因子
APPLIED PHYSICS B-LASERS AND OPTICS
·
2022
·Vol. 128
·期 3
·1-9
·
IF 2.171
Zhao Feng,Chu Yunting,Zhao Qianyun,Zhang Weiwei,Sun Jingchang,Li Chengren
A series of CaSrSiO 4 : Yb 3+ , Er 3+ , x Ag phosphors have been prepared by high-temperature solid-state reaction method. Scanning electron microscope (SEM) images show that more small spherical particles gather together to form bigger cluster when Ag nanoparticles are co-doped into CaSrSiO 4 : 9Yb 3+ , 1Er 3+ nanophosphor. Photoluminescence intensities of samples co-doped Ag nanoparticles enhance significantly and the optimized Ag concentration is 0.6 mol%. The fluorescence intensity ratio, the absolute sensitivity, relative sensitivity and temperature resolution are measured, computed and discussed in the range of 303–703 K. The results show that all sensing performances of CaSrSiO 4 : Yb 3+ , Er 3+ , 0.6Ag phosphor are superior to these of the sample un-doped Ag particles and the maximum S A value can go up to 7.3 × 10 –3 K −1 , indicating that CaSrSiO 4 : 9Yb 3+ , 1Er 3+ , 0.6Ag designed and prepared in this work is a promising optical high-temperature sensing material and it is appropriate to practical application in comprehensive fields.
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高影响因子
Journal of Physical Chemistry C
·
2015
·
IF 4.772
Yan Song,Guixia Liu,Xiangting Dong,Jinxian Wang,Wensheng Yu,Jingmei Li
Multifunctional nanomaterials possessing upconversion luminescence, magnetic, and photothermal properties show promising applications in biology and medicine. In this study, a new kind of luminescent-magnetic-thermal core–shell hybrid nanocomposite was fabricated combining rare earth Yb3+ and Er3+ ions doped NaGdF4 nanocrystals as shell layer materials and gold nanorods (AuNRs) as cores. The structure, morphology, composition, and properties of the multifunctional hybrid nanocomposites were characterized by X-ray powder diffraction, transmission electron microscopy, energy dispersive spectroscopy, upconversion photoluminescence spectra, vibrating sample magnetometer, sensitive thermometer, and cytotoxicity assessment, respectively. The multifunctional hybrid nanocomposites have rodlike morphology and core–shell structure. The uniform NaGdF4/Yb3+,Er3+ shell with a thickness of around 4.5 nm was coated on the surface of AuNRs with a length of 40 nm and a diameter of 12 nm. The AuNRs@NaGdF4/Yb3+,Er3+ multifunctional nanocomposites provide an excellent upconversion emission under excitation at 980 nm and a superparamagnetic behavior with magnetic susceptibility of 8.0 × 10–5 emu·g–1·Oe–1 at 300 K and saturation magnetization value of 102 emu·g–1 at 2 K. More significantly, when AuNRs@NaGdF4/Yb3+,Er3+ aqueous suspensions of 100 μg·mL–1 were irradiated by a 980 nm NIR laser for 10 min, the temperature was significantly elevated to 48 °C. At the same time, the temperature of photothermal transduction can be easily controlled by adjusting the concentration of nanocomposites. Preliminary investigation of incubating with HeLa cells displays that the multifunctional nanocomposites exhibit a good biocompatibility. Moreover, the nanocomposites may be effectively utilized for bioimaging and photothermal therapy in living cells.
研究领域:
生物医学工程
·
纳米材料科学
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产品关联
DOI
高影响因子
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