Article
Chemistry, Multidisciplinary
Olga A. Lipina, Yana V. Baklanova, Tatyana S. Spiridonova, Elena G. Khaikina
Summary: New Ho3+/Yb3+ and Tm3+/Yb3+ codoped Na5Rb7Sc2(WO4)(9) phosphors were synthesized using a conventional solid state reaction method. These phosphors exhibit upconversion luminescence under 980 nm laser diode excitation and show promising temperature measurement performance at certain temperatures.
Article
Chemistry, Multidisciplinary
Lu Zheng, Xinyi Huang, Jiuping Zhong, Zijun Wang, Xiaoning Cheng
Summary: This study investigated the effects of a SiO2 shell coating on the optical properties and thermal sensitivity of core-shell UCNPs, revealing that the SiO2 coating can significantly enhance the temperature sensitivity. The research also found that analyzing the fluorescence intensity ratio of non-thermally coupled levels can lead to even higher temperature sensitivity in certain conditions.
Article
Materials Science, Multidisciplinary
Haibo Xu, Yanbang Lian, Zhanling Lu, Ilya Kolesnikov, Yingjie Zhao, Kun He, Zewen Su, Gongxun Bai, Shiqing Xu
Summary: Rare earth ion-doped upconversion luminescent materials have advantages in temperature sensing, such as anti-interference, fast response, and high sensitivity. Er3+/Yb3+-doped LaGaO3 microcrystals were prepared through a high-temperature solid-phase method in this study. The microcrystals exhibit excellent upconversion luminescence and temperature sensing under 980 nm excitation, with high precision and stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Xuan Tong, Xin Zhou, Xunze Tang, Yonggang Min, XiaoLong Li, Wenguang Wang, Yannan Qian
Summary: LiNbO3:Yb3+/Er3+ nanocubes with an average diameter of approximately 500 nm were applied in non-invasive optical temperature sensors for the first time. With increasing annealing temperature, the nanocubes exhibited a significant enhancement in upconversion emissions, indicating their potential application in optical thermometry.
Article
Optics
I. M. Goncalves, A. R. Pessoa, C. Hazra, Y. S. Correales, S. J. L. Ribeiro, L. de S. Menezes
Summary: The research explores the potential of photoluminescent single-particle thermometry at the micro or nanoscale using Er3+/Yb3+ doped beta-NaYF4 rare-earth single microcrystals, with applications in electronics, biological thermal imaging, and investigating thermodynamics around microsystems.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Kamel Saidi, Mohamed Dammak
Summary: The Yb3+/Er3+ co-doped NGPO phosphors were synthesized by a solid-state method, capable of adjusting emission color under specific excitation conditions. The study suggests their potential applications in temperature sensing and optical heating.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Optics
Runfa Liu, Yue Pan, Jia Zhang, Xincui Zhuang, Yangbo Wang, Xufeng Zhou, Shanshan Du, Huaiyong Li, Wei Li
Summary: Two novel upconversion phosphors, Yb3+/Ho3+ co-doped BiOF and BiF3 microcrystals, were synthesized and investigated for their crystalline structure, room temperature and temperature-dependent upconversion properties. Under 980 nm laser excitation, both microcrystals exhibited characteristic emissions of Ho3+ with an identical green luminescent color, but the intensity was higher in BiF3:Yb/Ho microcrystals. The upconversion intensity and fluorescence intensity ratios of both microcrystals decreased regularly with increasing temperature, establishing a ratiometric thermometry. BiF3:Yb/Ho microcrystals demonstrated significantly superior thermometric performance, with a high relative sensitivity of 5.41% K-1 and a wide temperature sensing range of 298-673 K.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Weiguang Ran, Guangshi Sun, Xiaoli Ma, Zicheng Zhang, Tingjiang Yan
Summary: In this paper, Er3+/Yb3+ co-doped CdMoO4 phosphors were prepared and showed excellent green emission properties when irradiated with a laser at about 980 nm. The prepared phosphors exhibited excellent sensitivity to temperature in the range of 293 to 473 K for optical temperature sensors based on the fluorescence intensity ratio. The CdMoO4:0.02Er(3+),0.08Yb(3+) sample achieved a maximum absolute sensitivity at about 473 K and a relative sensitivity of 1.631% K-1 at 293 K, making it suitable for non-contact optical temperature measurement.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Thulitha M. Abeywickrama, Yuanbing Mao
Summary: In this study, Yb3+ and Er3+ co-doped SrMoO4 submicron spindles with strong green upconversion luminescence (UCL) emission were synthesized via a hydrothermal (HT) process without annealing. The UCL intensity of the annealed samples surpassed those produced by the solid-state method and is comparable to that from the commercial NaYF4:Yb,Er sample. The temperature-dependent luminescence of the synthesized samples was also studied.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Wei Wei, Yannan Dai, Dong Li, Jianhua Xu, Hui Li, Chungang Duan, Qingbiao Zhao
Summary: Rare earth upconversion luminescent materials have potential applications in optical thermometry due to their unique fluorescence properties. In this study, a series of Gd3BWO9: Yb3+, Er3+ UC phosphors were prepared and their crystal phase and emission properties were characterized. The energy transfer processes between Yb3+ and Er3+ ions were investigated and the optical thermometry performance of Gd3BWO9: 0.20 Yb3+, 0.02 Er3+ was evaluated. The results demonstrated that Yb3+-Er3+ co-doped Gd3BWO9 phosphors can be used for optical temperature measurement.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Wei Zheng, Baoyu Sun, Yuemei Li, Rui Wang
Summary: This study introduces a new strategy for nanothermometry, utilizing the synergistic effects of Er3+ and inverse fluorescence intensity ratio in Gd2O3:Er3+,Yb3+ nanospheres to significantly enhance absolute sensitivity. Controllable tuning of sensitivity was achieved by adjusting Yb3+ concentration, while also maintaining outstanding signal discriminability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Junyu Hong, Feilong Liu, Miroslav D. Dramicanin, Lei Zhou, Mingmei Wu
Summary: A series of Yb3+- and Er3+-doped Ca3Sc2Si3O12 (CSS) upconversion (UC) phosphors were synthesized by the sol-gel combustion method to develop novel luminescent materials for optical temperature measurement. The addition of Yb3+ greatly enhanced the emission of Er3+ by effective energy transfer. The prepared CSS:Yb3+,Er3+ phosphors exhibited green and red emissions corresponding to specific transitions of Er3+, and showed excellent temperature-dependent behavior with high sensitivity.
Article
Materials Science, Ceramics
Junhao Xing, Fei Shang, Guohua Chen
Summary: A novel Yb3+/Er3+ double doped glass ceramic material containing NaSrPO4 nanocrystals was synthesized and systematically studied for its up-conversion optical properties and temperature-sensitive performance. The material exhibited potential as optical temperature sensors based on its maximum relative sensitivity at 298 K and maximum absolute sensitivity at 573 K.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Qingran Wang, Hao Wu, Liangliang Zhang, Huajun Wu, Yongshi Luo, Guohui Pan, Zhendong Hao, Quanquan Mu, Jiahua Zhang
Summary: Er3+ and Yb3+ codoped Gd2Mo4O15 upconversion phosphors were synthesized and studied for their luminescent properties and temperature sensing behaviors. The results indicate that Gd2Mo4O15 is a promising green upconversion phosphor for optical thermometry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jingjing Tang, Yujian Wu, Minkun Jin, YueXin Li, Changheng Chen, Jinmeng Xiang, Chongfeng Guo
Summary: In this study, a noncontact upconversion optical temperature sensor was developed and a flexible thin-film thermometer was fabricated for detecting the temperature of microelectronic components. The results showed stable emission and sensitivity of the sensor, indicating its potential to replace traditional thermometers.
INORGANIC CHEMISTRY
(2022)
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)