CHEMICAL PHYSICS LETTERS
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2016
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IF 1.86
Zhen Wei,Wei Zheng,Zhiyong Zhu,Xiongfei Guo
SrWO 4 :Er 3+ /Yb 3+ phosphors are synthesized by a solid state reaction . The XRD patterns indicate that the doping ions will not change the phase of SrWO 4 . Under the excitation at 980 nm, SrWO 4 :Er 3+ /Yb 3+ phosphors show emission bands in green and red regions. The temperature-dependence of upconversion efficiency and temperature-sensing properties of SrWO 4 :Er 3+ /Yb 3+ phosphors have been discussed according to the fluorescence intensity ratio of green emissions from 2 H 11/2 / 4 S 3/2 → 4 I 15/2 transitions of Er 3+ in the range of 95–775 K under the excitation at 980 nm. The maximum sensitivity of SrWO 4 :1%Er 3+ /6%Yb 3+ phosphor is found to be 0.01282 K −1 at 489 K.
研究领域:
材料科学
·
光学
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DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Wei Liu,Shiqing Xu,Lei Lei
Lanthanide doped Sc 2 (MoO 4 ) 3 upconversion (UC) crystals showed distinct negative thermal quenching effect, which show promising applications in the temperature sensing field. However, it is still valuable to develop novel routes to enhance the room temperature UC intensity. Herein, the UC intensity of the Yb/Er (Ho) doped Sc 2 Mo 3 O 12 crystals were significantly enhanced by doping Ca 2+ ions. The incorporation of Ca 2+ ions can break the crystal symmetry around the activators and then promote the 4f-4f transitions followed by the enhanced UC. Especially, the UC intensity of the Sc 2 Mo 3 O 12 :20Yb/1Ho/20Ca was about 100 times than that of Sc 2 Mo 3 O 12 :20Yb/1Ho phosphors. Furthermore, the thermally couple levels based temperature sensing performance was improved after doping Ca 2+ ions. Our results may promote the exploration of novel scheelite structural compounds with superior UC properties.
研究领域:
材料科学
·
光学
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DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Xiaohan Liu,Hong Shao,Ning Li,Xue Teng,Dan Li,Xiangting Dong,Hongbo Zhang
The realization of tunable multicolor luminescence especially full-spectrum white-light emission in a single matrix has aroused more attention from researchers. To address the above challenge, Bi 3+, and Tb 3+ are selected as both activators and sensitizers with the help of energy level matching engineering of Bi 3+ and Tb 3+ having matching energy levels with Eu 3+ , a series of 1D Y 4 Al 2 O 9 :Bi 3+ , Bi 3+ /Eu 3+ , Tb 3+ , Tb 3+ /Eu 3+ and Bi 3+ /Tb 3+ /Eu 3+ nanofibers (NFs) are designed and synthesized by a simple electrospinning technique combined with an oxidative calcination. Under 298-nm UV light excitation, Y 4 Al 2 O 9 :Bi 3+ /Tb 3+ /Eu 3+ NFs demonstrate tunable multicolor luminescence (blue, purple, red, green, yellow, and white) especially full-spectrum white-light emission via double energy transfer (ET) effect and modulation of molar ratio among Bi 3+ , Tb 3+ and Eu 3+ . Additionally, Y 4 Al 2 O 9 :3%Bi 3+ /7%Tb 3+ /1%Eu 3+ NFs are sensitive to temperature, and the maximum S α and S γ values of Y 4 Al 2 O 9 :3%Bi 3+ /7%Tb 3+ /1%Eu 3+ NFs reach 0.0417 K −1 and 0.84% K −1 , respectively. In virtue of electrospinning, triple activators (Bi 3+ , Tb 3+ , and Eu 3+ ) are readily and uniformly doped in Y 4 Al 2 O 9 NFs single matrix to achieve dual function of tunable multicolor luminescence and temperature sensing. The formation principle and luminescence theory of the samples are clarified. The findings in this work are instructive to develop multicolor luminescent phosphors and temperature-sensing materials.
研究领域:
材料科学
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光学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yougui Yang,Junhao Li,Yusheng Xu,Ling He,Meng Wu,Qiudong Duan,Cang Zhang,Kunpeng Shi,Yong Yang,Qi Wang,Zhangwen Long,Dacheng Zhou,Jianbei Qiu
All-inorganic perovskite QDs, such as CsPbX 3 (X = Cl, Br, I), have garnered significant attention in the field of optoelectronics as emerging photonic materials. Rare-earth (RE) doping is an effective strategy for enhancing the optical properties of CsPbX 3 perovskite quantum dot glasses. Therefore, investigating the crystallization behavior of rare-earth ion-doped CsPbX 3 glass and the energy transfer mechanisms between rare-earth ions and CsPbX 3 is crucial for advancing the development of rare-earth-doped perovskite glass materials. The paper systematically introduces the preparation methods, structural characteristics, and applications of CsPbBr 1.5 Cl 1.5 QDs in optoelectronic devices. Firstly, the detailed effects of Eu 3+ and F⁻ doping on the structure and optical properties of CsPbBr 1.5 Cl 1.5 quantum dot glass are discussed. Subsequently, the crystal structure, size distribution, and morphology of CsPbBr 1.5 Cl 1.5 QDs are characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Furthermore, the application of CsPbBr 1.5 Cl 1.5 QDs in LEDs and temperature sensing optoelectronic devices is explored, highlighting their performance and potential value in these applications. This study provides important references and guidance for further research and application of CsPbBr 1.5 Cl 1.5 QDs in the field of optoelectronics.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
OPTICS LETTERS
·
2022
·Vol. 47
·期 23
·6293-6296
·
IF 3.56
Chongyang Cai,Leipeng Li,Pei Li,Tao Li,Dengfeng Peng,Yanmin Yang,Yanmin Yang
Mechanoluminescent materials have attracted considerable attention over the past two decades, owing to the ability to convert external mechanical stimuli into useful photons. Here we present a new, to the best of our knowledge, type of mechanoluminescent material, i.e., MgF2:Tb3+. In addition to the demonstration of traditional applications, such as stress sensing, we show the possibility of ratiometric thermometry using this mechanoluminescent material. Under stimulation of an external force, rather than the conventional photoexcitation, the luminescence ratio of 5D3→7F6 to 5D4→7F5 emission lines of Tb3+ is confirmed to be a good indicator of temperature. Our work not only expands the family of mechanoluminescent materials, but also provides a new and energy-saving route for temperature sensing.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2020
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IF 4.613
Jiancong Liu,Xin Kang,Hongyan Zhang,Yancong Liu,Chunyan Wang,Xinru Gao,Yaorui Li
Temperature sensors with unique temperature-dependent luminescent properties have a great advantage to be used as noncontact luminescence thermometers especially in biological applications . To date, most of the photoluminescent materials for temperature sensing are based on the temperature-dependent luminescent intensity or short-lived emission lifetime, which suffer from the interference from excitation power, sample concentration, or background fluorescence. Herein, we report a carbon dot (CD)-based nanocomposite showing distinct long-lived thermally activated delayed fluorescence (TADF) property with the lifetime of 30.85 ms at room temperature and under an air atmosphere. Notably, the TADF emission presents variable long-lived lifetimes under different temperatures, which demonstrates its promising application in lifetime thermal sensing. The interaction between the functional groups of CD and SiO 2 matrix by forming Si–O–C bonds plays a key role for the synthesis process, which further improves the confinement of vibrations and rotation and harvests the triplet state efficiently. This work introduces a new perspective to prepare nanothermometers, which opens up the potential application of CD-based materials with long-lived TADF emission in highly sensitive temperature sensing with their convenience and high efficiency.
研究领域:
材料科学
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纳米技术
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光学
·
生物医学工程
✓ 已验证
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2020
·
IF 3.83
Xiuna Tian,Hongjian Dou,Lingyuan Wu
Based on the luminescence of Bi 3+ , novel temperature sensing materials YNbO 4 :Bi 3+ and YNbO 4 :Bi 3+ /Sm 3+ were successfully synthesized by solid state reaction. The XRD patterns show that the synthesized materials have a pure phase of YNbO 4 . With the excitation of 314 nm, the YNbO 4 :Bi 3+ material shows intense temperature-dependent luminescence in the range of 303 K–463 K. Based on the temperature-dependent luminescence of Bi 3+ in YNbO 4 , the maximum relative sensitivity can be obtained at 434 K (1.72% K −1 ). Under the excitation of 406 nm, the YNbO 4 :Sm 3+ material shows the characteristic emission peaks of Sm 3+ . In YNbO 4 :Bi 3+ /Sm 3+ phosphor, the large overlap between the emission spectra of Bi 3+ and the excitation spectra of Sm 3+ leads to a significant energy transfer from Bi 3+ to Sm 3+ . With the excitation of 314 nm, the emission spectra of YNbO 4 :Bi 3+ /Sm 3+ material shows the characteristic peaks of Bi 3+ and Sm 3+ . The luminescence intensity ratio of Sm 3+ and Bi 3+ shows a strong temperature dependence. Based on the luminescence intensity ratio, a large relative sensitivity is obtained at 455 K (1.57% K −1 ).
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2022
·
IF 2.988
Yuhong Zhang,Yibin Guo,Xingke Zheng,Pengcheng Wang,Hang Liu
A series of AWO 4 (A = Sr, Ca): Yb 3+ /Tm 3+ /Gd 3+ /Er 3+ phosphors are successfully prepared by solid-state method. In comparison with the samples without Gd 3+ ions, the UC emission intensity of CaWO 4 : 0.5 mol%Tm 3+ /1 mol%Yb 3+ /10 mol%Gd 3+ sample has increased by 104 times (∼475 nm), 71 times (∼655 nm) and 23 times (∼795 nm) due to the shrink of the host lattice with the Gd 3+ ions corporation. Based on the fluorescence intensity ratio (FIR) of non-thermal couple levels(non-TCLs), the temperature sensing characteristics are investigated for AWO 4 (A = Sr, Ca): Yb 3+ /Tm 3+ /Gd 3+ /Er 3+ phosphors. The maximum values of absolute sensitivity and relative sensitivity are 0.09356 K -1 and 1.499% K −1 for CaWO 4 : Yb 3+ /Tm 3+ /Gd 3+ /Er 3+ phosphor. It indicates that the AWO 4 (A = Sr, Ca): Yb 3+ /Tm 3+ /Gd 3+ /Er 3+ phosphors can be applied to develop optical thermometry.
研究领域:
材料科学
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光学
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DOI
高影响因子
INORGANIC CHEMISTRY
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2020
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IF 4.825
Yibo Chen,Jin He,Xinguo Zhang,Mingcong Rong,Zhiguo Xia,Jing Wang,Zhao-Qing Liu
There is a challenge for noncontact temperature-sensing techniques and the related materials, in which a highly reliable contactless thermometer probe with low cost and high sensitivity is in demand. Here, the Lu3Al5O12:Ce3+/Mn4+ phosphor has been designed and prepared for the high-performance fluorescence temperature-sensing application in a novel one-pot, self-redox, solid-state process. Benefiting from the different electron–lattice/phonon interactions of Ce3+ and Mn4+, two distinguishable emission peaks with significantly different temperature responses originating from Ce3+ and Mn4+ are realized. Applying the fluorescence intensity ratio of Mn4+ versus Ce3+ and the decay lifetime of Mn4+ emission as the temperature readout, a dual-mode optical temperature-sensing mechanism was proposed and studied in the temperature range of 100–350 K. The maximum relative sensitivities (Sr) are derived as 4.37 and 3.22% K–1 respectively, as well as a large chromaticity shift visible to naked eyes (ΔE = 153 × 10–3 in 100–350 K) is observed. This is the first report of a Ce3+,Mn4+ co-doped dual-emitting phosphor, and its unique optical thermometric features demonstrate the high potential of Lu3Al5O12:Ce3+/Mn4+ as an accurate and reliable thermometer probe candidate.
研究领域:
材料科学
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光学
✓ 已验证
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 11
·期 1
·172-185
·
IF 7
Kejie Li,Mengmeng Dai,Zuoling Fu,Zhiying Wang,Hanyu Xu,Rong Wang
Fluorides have garnered tremendous attention in rare-earth-doped fluorescent probes owing to their low phonon energy and excellent optical transparency. However, the latest generation of fluorides, LiYF4, is plagued by extremely complex and uncontrollable synthesis methods, which greatly restricts its further exploration and application. Herein, a straightforward one-step method for the synthesis LiYF4:Ln3+ with micron-sized cones and nano-spheres is reported. Astonishingly, self-sensitized luminescence was achieved under multi-wavelength excitation when Er3+ was singly doped. LiYF4:Yb3+,Er3+ demonstrated superior luminescence intensity to those of commercial green phosphors (NaYF4:Yb3+,Er3+); this ultra-efficient photoluminescence was confirmed from the crystal structure, electronic band properties, morphological analysis and Debye temperature calculations. Further, by constructing cross-relaxation between the Ce3+ and Er3+ ions (4I11/2 + 2F5/2 → 4I13/2 + 2F7/2), the specific four-peak emission (SFPE) intensity of Er3+ in NIR-IIb was significantly increased, further enhancing the relative sensitivity of thermally coupled temperature sensing based on SFPE. Subsequently, non-thermally coupled temperature sensing based on SFPE was also achieved through the construction of phonon-assisted energy transfer between Ho3+ 5I6 and Er3+ 4I13/2. In summary, this paper not only puts forward theoretical and experimental arguments for the use of LiYF4 to replace the conventional NaYF4, but also substantiates the extraordinary prospects of LiYF4 as a temperature-sensitive fluorescent probe in nanomedicine.
研究领域:
材料科学
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纳米医学
✓ 已验证
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2024
·
IF 5.2
Yuebin Xu,Aierpati Taximaimaiti,Ru Xie,Hairegu Tuxun,Min Yin,Aierken Sidike
Upconversion luminescent (UCL) materials have broad application prospects in the field of temperature sensing; thus, improving the luminescence performance and temperature measurement sensitivity of upconversion phosphors is highly important. In this study, SrAl 2 Si 2 O 8 with good thermal stability was doped with Ho 3+ and Yb 3+ , and the optimal concentration was determined to be SrAl 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ (in mole fraction). A series of (Sr 0.87‒ x Ba x )Al 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ phosphor samples was prepared by using a cationic substitution strategy and further doping Ba 2+ to replace the Sr 2+ lattice in the matrix. The results show that the introduction of Ba 2+ effectively replaces Sr 2+ and significantly increases the upconversion fluorescence emission intensity of SrAl 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ by approximately 2.9 times. The temperature sensing properties of SrAl 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ and Sr 0.37 Ba 0.50 Al 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ were investigated. The Ho 3+ -based 5 F 5 and 5 S 2 / 5 F 4 nonthermal coupled energy level fluorescence intensity ratio (FIR) techniques in the Ba 0.37 Sr 0.50 Al 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ phosphors show a maximum temperature measurement absolute sensitivity of 4.32%/K at 573 K and a maximum relative sensitivity of 1.08%/K at 373 K; these values are 5.8 and 3.2 times greater, respectively, than that of the non-Ba 2+ -doped SrAl 2 Si 2 O 8 :1%Ho 3+ , 12%Yb 3+ phosphor. These results not only confirm the effectiveness of the cation substitution strategy in enhancing the upconversion luminescence performance and temperature sensing characteristics but also provide a scientific basis for the design of high-performance optical temperature sensors.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Lu Liu,Dongyang Tang,Li Xu,Fahim Khan,Isam Ud Din,Zhao Wang,Pengfei Li,Hanyang Li,Enming Zhao,Yang Zhang
Various concentrations of Ho 3+ and Nd 3+ codoped NaYF 4 nanorods were successfully synthesized. On the basis of the upconversion spectra under 808 nm excitation, the luminescence mechanisms were discussed in detail. The ratio of red to green intensity evidently increases with increasing the Nd 3+ content due to the stronger interactions between Ho 3+ and Nd 3+ , which enhance the red emission and suppress the green one. In addition, we found that the red emission is more sensitive to the ambient temperature as compared to the green one, thus validating the thermal sensing by applying the ratiometric method by using these two emission bands. Relatively high sensing sensitivity of 0.9% was obtained, evidencing the great potential of the presented optical thermometer.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）