Article
Chemistry, Physical
Fuwen Liu, Degang Deng, Ming Wu, Bowen Chen, Liuyan Zhou, Shiqing Xu
Summary: The study successfully prepared dual-emitting Eu2+/Eu3+ co-doped NaZr2(PO4)(3) phosphors, utilizing K+ ions to enhance temperature sensitivity and resolution of the temperature sensing material. It was found that the introduction of K+ ions could decrease the thermal stability of Eu2+ and enhance that of Eu3+, resulting in an improvement of the fluorescence intensity ratio.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Spectroscopy
Miaomiao Zhu, Qincan Ma, Ning Guo
Summary: In this study, rare-earth-doped self-activated LiCa3ZnV3O12 (LCZV) vanadate phosphors were prepared and their crystal structure, non-contact temperature sensing, and luminescence properties were deeply studied. The emission of [VO4](3-) group and Eu3+ ions excited by ultraviolet light at 340 nm was monitored. The FIR from Eu3+ to [VO4](3-) exhibited excellent sensitivity performance at 303 K - 523 K. The Eu3+ doped LCZV phosphor not only can be used for high-temperature environmental safety signals but also is an extraordinary viable material in the field of optical sensing.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
Rajan Singh, M. Manhas, A. K. Bedyal, F. Durani, H. C. Swart, Vinay Kumar
Summary: CaSr2(PO4)2:Eu3+ phosphors prepared using a low-cost solution combustion method show intense orange and red emissions, making them suitable for non-contact optical thermometry and solid-state lighting applications. These phosphors exhibit high sensitivity at low temperatures.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yuming Gong, Yujun Liang, Shiqi Liu, Haoran Li, Yanying Bi, Qiangke Wang, Yi Dou
Summary: The study focused on developing composite phosphors of CYPO:Ce3+,Mn2+/g-C3N4 with different proportions for highly sensitive optical-temperature measurement. Through X-ray powder diffraction and fluorescence spectroscopy, it was found that the composite phosphors exhibited better temperature-dependent properties compared to pure CYPO:Ce3+,Mn2+. The maximum absolute and relative sensitivities of the designed composite phosphors were determined based on FIR technology, providing a feasible idea for versatile applications in optical-temperature measurement.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Fengkai Shang, Chunhai Hu, Wei Xu, Le Zhao, Shuning Zong, Miao Yao, Fengze Bai, Zhiguo Zhang
Summary: Luminescence thermometry using rare earth doped materials has shown promising applications, but achieving sensitive and accurate temperature sensing over a wide range remains a challenge. By utilizing the inverse thermal responses of near-infrared emissions in Nd3+-Yb3+ codoped phosphors and modifying the aluminate host matrix with SiO2, enhanced thermometric capabilities were achieved for temperatures ranging from 303 to 773 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Dan Zhang, Baofeng Zheng, Zhibo Zheng, Liang Li, Qing Yang, Yanhua Song, Bo Zou, Haifeng Zou
Summary: The Ca9NaZn(PO4)7:1.0%Eu2+ phosphor has potential applications in full-visible-spectrum lighting and optical thermometry, and the addition of Mg2+ ions can improve its optical properties.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Spectroscopy
Yuhui Zhang, Ning Guo, Baiqi Shao, Jing Li, Ruizhuo Ouyang, Yuqing Miao
Summary: A new temperature sensing strategy was proposed to attain strong sensitivity and excellent signal resolution ability using NLMW:Mn4+/Er3+ phosphors, achieving high-efficiency dual-mode emission. Detailed analysis of crystallographic structure and spectrum properties revealed a maximum relative sensitivity of 1.31% K-1, indicating the potential application of NLMW:Mn4+/Er3+ phosphors in non-contact temperature measurement.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Engineering, Electrical & Electronic
Zoran Ristic, Wojciech Piotrowski, Mina Medic, Jovana Perisa, Zeljka M. Antic, Lukasz Marciniak, Miroslav D. Dramicanin
Summary: This paper describes Mn5+-activated Sr-3(PO4)(2) and Ba-3(PO4)(2) phosphors as near-infrared lifetime-based luminescence thermometry probes. The materials were prepared by a solid-state method and their structures were confirmed by X-ray diffraction analysis. The study found that the materials showed broad and strong absorption in the range of 650 to 950 nm, with a red shift in the emission maximum. The temperature properties of the phosphors were evaluated by measuring the temperature dependence of the Mn5+ excited-state lifetime.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Wenke Ruan, Mubiao Xie, Qiaoli Yang, Limin Hu, Kangsheng Su
Summary: A series of single-phase white light-emitting phosphors Ca9Lu(PO4)(7):xEu(2+/3+) were successfully synthesized and their crystallization and optical properties were investigated. By adjusting the valence mixing of Eu2+/Eu3+ ions, the emission colors can change from blue-green to white and eventually to red.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Optics
Jiujun Zhu, Peng Du, Jun Wang
Summary: A series of K0.3Bi0.7F2.4:Eu3+@xg-C3N4 composites were synthesized via self-assembly method, which exhibited multicolor emissions and good temperature sensing properties, making them promising candidates for optical thermometers.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Applied
Fuwen Liu, Degang Deng, Ming Wu, Bowen Chen, Liuyan Zhou, Shiqing Xu
Summary: Eu2+/Sm3+ co-doped Sr4La(PO4)(3)O phosphors were synthesized and showed high sensitivity and a wide range of temperature measurements, making them promising for applications in high-temperature optical thermometry.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Ceramics
WenJun Huang, JiaHui Lei, YiHang Chen, JunYu Chen, Yi Li, LiPing Chen, Hai Guo
Summary: Dy3+-doped YPO4 glass ceramic samples were synthesized through melt-quenching and heat-treatment methods. Structural analysis of YPO4 GC was performed using differential scanning calorimetry, X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. The optimized sample was GC565 (heat-treated at 565 degrees C for 2 h). The fluorescence intensity ratio (FIR) of Dy3+ emissions from I-4(15/2) and F-4(9/2) to H-6(15/2) under 350 nm excitation was used for temperature sensing, with a maximum relative sensitivity of 2.03 %K-1 at 303 K. Our work demonstrates the potential application of Dy3+-doped YPO4 GC in optical temperature sensing.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Huocheng Lv, Peng Du, Weiping Li, Laihui Luo
Summary: A series of Tm3+/Yb3+-codoped submicron particles were developed via a sol-gel route, and bright upconversion emissions were observed under 980 nm excitation. The emission intensities can be enhanced by increasing temperature due to the negative thermal expansion effect and energy transfer mechanism. The maximum sensitivity of the particles was found to be 0.198 K-1.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Junhao Xing, Limin Liu, Fei Shang, Guohua Chen
Summary: Transparent glass ceramics Sr-5(PO4)(3)F were successfully prepared from low-cost lead-free borate glasses, showing improved luminescence properties and potential application in optical temperature sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
S. N. Ogugua, L. J. B. Erasmus, H. C. Swart
Summary: This paper reports on the luminescence and thermometric properties of Ca4(PO4)2O:Eu. The emission of Eu2+ showed blue and red bands, while Eu3+ exhibited yellow and red lines. The thermometric properties in different spectral ranges were studied using the luminescence intensity ratio method. Average temperature sensitivities of 1.76%, 0.1%, 0.11%, and 0.11%/°C were obtained in the blue-green, yellow, red, and near-infrared spectral ranges, respectively. The material could be potentially used in low-temperature thermal imaging applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)