Article
Optics
Hellen Nalumaga, Joseph J. Schuyt, Grant V. M. Williams
Summary: In this study, NaMgF3:0.1%Eu nanocuboids capped with oleic acid were synthesized using a hydrothermal synthesis technique. Ligand exchange with 2-thenoyltrifluoroacetone greatly enhanced the Eu3+ photoluminescence, with the intensity of the 5D0 -> 7F2 transition increasing by over 40,000 times compared to the oleic acid-capped nanoparticles. The sensitized Eu3+ emissions mainly originated from distorted Eu3+ sites near the nanoparticle surfaces, as indicated by large Judd-Ofelt omega 2 parameters. The significant enhancement of Eu3+ photoluminescence in 2-thenoyltrifluoroacetone sensitized NaMgF3:Eu nanoparticles opens up possibilities for applications such as ultra-high resolution optical temperature sensors and dosimeters.
JOURNAL OF LUMINESCENCE
(2024)
Article
Materials Science, Multidisciplinary
Yikuang Wang, Dunrong Chen, Yixi Zhuang, Wenjing Chen, Hangyu Long, Hongmin Chen, Rong-Jun Xie
Summary: This study introduces persistent luminescence (PersL) materials with deep traps, demonstrating controllable photon emissions under thermal stimulation. By surface passivation, the light storage efficiency is enhanced. These nanoparticles show great potential in optical information storage and decryption applications.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Analytical
J. J. Schuyt, G. V. M. Williams, K. Shinohara, T. Shimizu, K. Yamanoi, M. Cadatal-Raduban
Summary: The luminescence properties of NaMgF3:Sm and NaMgF3:Ce,Sm were studied in the vacuum ultraviolet spectral region. Excitation bands corresponding to charge transfer and energy transfer processes were observed. The binding energy diagrams constructed based on these processes were validated to be consistent with experimental data.
METHODS AND APPLICATIONS IN FLUORESCENCE
(2022)
Article
Chemistry, Physical
W. Rittisut, P. Mool-Am-Kha, N. Wantana, Y. Ruangtaweep, S. Rujirawat, P. Kidkhunthod, P. Manyum, R. Yimnirun, A. Prasatkhetragarn, S. Kothan, H. J. Kim, J. Kaewkhao
Summary: A novel series of Gd3+ and Sm(3+) co-doped borate glasses were created using the standard melt-quenching technique. The characteristics of the glasses were analyzed using XRD, FTIR, and optical screening. The results showed that the glass samples were amorphous and had good luminescence properties, making them a potential choice for X-ray scintillators.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Vyacheslav A. Bardin, Yuri A. Vorotnikov, Dmitri Stass, Natalya A. Vorotnikova, Michael A. Shestopalov
Summary: Developing cancer treatment techniques to cure deep-seated tumors is an urgent task for scientists and physicians. X-ray-induced photodynamic therapy (X-PDT) is considered a promising method due to the unlimited penetration of X-rays through tissues. In this study, octahedral iodide tungsten clusters were incorporated into nanosized polyurethane (pU) particles, showing bright photo- and X-ray-induced emission, high efficiency in generating singlet oxygen, and sensitivity to oxygen concentration. The inclusion of cluster complex greatly enhanced the stability of pU matrix against hydrolysis in water and under X-rays.
Article
Materials Science, Multidisciplinary
Afranio Sousa, Adelmo Souza, Heveson Lima
Summary: The study investigated the luminescent properties of compounds based on lanthanide ions and their effects on NaMgF3, using atomistic simulations and crystal field models. New interatomic potentials were developed to accurately reproduce structural properties and lattice parameters, while analyzing the energetically favorable positions for Eu2+ and Eu3+ dopant ions in the crystal structure. Analysis included charge compensation mechanisms and local symmetry, as well as discussions on charge transfer and crystal field parameters. The research provides insights for material design and structural analysis of fluoroperovskite compounds upon lanthanide ion insertion.
MATERIALS ADVANCES
(2021)
Article
Chemistry, Physical
Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: Pr-doped GdTaO4 crystals with various Pr-concentrations were prepared using a floating zone furnace, and their photo- and radio-luminescence properties were evaluated. The study found that the 0.5% Pr:GdTaO4 crystal exhibits the highest scintillation light yield of 5110 photons/MeV among the samples.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
N. Jarucha, P. Meejitpaisan, Y. Ruangtaweep, H. J. Kim, J. Kaewkhao
Summary: The Sm3+ doped gadolinium aluminum sodium phosphate oxyfluoride glass prepared by melt-quenching technique exhibits orange light emitting. The glass absorbs more photon in visible light and NIR regions with increasing Sm2O3 concentrations. Under excitation at 401 nm, the glass shows the highest emission around 598 nm. The emissions intensity of Sm3+ increases with increasing samarium concentrations, while the decay time decreases with an increase of Sm2O3 contents. Radioluminescence emissions spectra correspond to the photoluminescence measurement, and the integral scintillation efficiency is determined at 12% compared to BGO crystal.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Yunlin Yang, Bibo Lou, Yiyi Ou, Fang Su, Chong-Geng Ma, Chang-Kui Duan, Pieter Dorenbos, Hongbin Liang
Summary: Ce3+-doped LiSr4(BO3)3 phosphors were synthesized using a high-temperature solid-state reaction method, and their structure and luminescence properties were investigated. The results showed that Ce3+ ions preferentially occupied the Sr2+ sites in LiSr4(BO3)3, and concentration quenching did not occur. Thermal ionization was found to be the dominant mechanism for thermal quenching of Ce3+ luminescence.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Analytical
Vartika S. Singh, Pankaj D. Belsare, Sanjiv V. Moharil
Summary: This paper describes a simple precipitation synthesis method for NaMgF3-based phosphors, which allows for incorporation of various activators and observation of characteristic emission. The samples exhibit predominantly trivalent lanthanide emission, with europium-doped samples showing intense Eu2+ emission after thermal treatment. Considering the intense nature of the emission, lifetime measurements were possible for the sample. Intense thermoluminescence and optically stimulated luminescence were also observed in NaMgF3:Eu.
Article
Chemistry, Inorganic & Nuclear
Adrian T. Hines, Gregory Morrison, Brandon J. Yarbrough, Natalia B. Shustova, Luiz G. Jacobsohn, Hans-Conrad zur Loye
Summary: Single crystals of rare earth borates, Na3Ln(BO3)2 and K3Ln(BO3)2, were synthesized using a boric acid/hydroxide melt. Na3Ln(BO3)2 crystallized in the monoclinic system with space group P21/n, while K3Ln(BO3)2 crystallized in the orthorhombic system with space group Pnma. The luminescence of these borates under ultraviolet and X-ray excitations was investigated for the first time, and K3Tb(BO3)2 showed the highest radioluminescence intensity.
SOLID STATE SCIENCES
(2023)
Article
Physics, Applied
S. Riedesel, R. Kumar, G. A. T. Duller, H. M. Roberts, A. M. T. Bell, M. Jain
Summary: Feldspars are commonly used in luminescence dating, but the mechanisms involved in luminescence production remain poorly understood. Recent advancements in IRPL technology have identified two electron trapping centres emitting at specific energy levels, but their characteristics are not significantly affected by the chemical composition or structure of the feldspars. Further research is needed to determine the factors driving variations in trap depth and emission energies.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Geochemistry & Geophysics
Andrea Maurizio Monti, Giulia Ricci, Marco Martini, Anna Galli, Federico Lugli, Maria Chiara Dalconi, Gilberto Artioli
Summary: The luminescence of quartz has various applications, but further research is needed to fully understand its characteristics. This study focuses on the luminescence of quartz from La Sassa, Tuscany, and explores its unique properties. Photoluminescence and radioluminescence measurements were used to investigate the excitation profile and the effect of thermal annealing. The results were confirmed by chemical profiles obtained through laser-ablation inductively coupled plasma mass spectrometry.
Article
Chemistry, Physical
N. Luewarasirikul, S. Sarachai, H. J. Kim, J. Kaewkhao
Summary: This research investigates the enhancement of photoluminescence and radioluminescence in Dy3+-doped Ba-Na-B glasses by adding fluoride and Gd3+. The results show that the addition of fluoride and Gd3+ can increase the emission intensity and scintillation potential of the glasses.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Physics, Condensed Matter
Xin-Yuan Sun, Min Zhang, Ting Lan, Zeng-Qing You, Qin-Hua Lai, Zhuohao Xiao, Jiuping Zhong
Summary: Ce3+-activated lithium borosilicate glasses with high neutron capture cross-section were synthesized by melt quenching method, showing promising application for neutron detection. The integrated emission intensity of Ce3+ ions can be significantly enhanced under UV light and X-ray excitation, demonstrating excellent luminescent properties.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Biochemical Research Methods
Robin Guehne, Vojtech Chlan, Grant V. M. Williams, Shen Chong, Kazuo Kadowaki, Andreas Poeppl, Juergen Haase
JOURNAL OF MAGNETIC RESONANCE
(2019)
Article
Materials Science, Multidisciplinary
Grant V. M. Williams, John Kennedy, Peter P. Murmu, Sergey Rubanov, Shen Chong
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Nuclear Science & Technology
J. J. Schuyt, G. V. M. Williams
RADIATION MEASUREMENTS
(2019)
Article
Physics, Applied
G. Bioletti, G. V. M. Williams, M. A. Susner, T. J. Haugan, D. M. Uhrig, S. V. Chong
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
K. Suschke, P. Gupta, G. V. M. Williams, R. Huebner, A. Markwitz, J. Kennedy
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2019)
Article
Optics
J. J. Schuyt, G. V. M. Williams
JOURNAL OF LUMINESCENCE
(2019)
Article
Physics, Condensed Matter
J. J. Schuyt, J. Donaldson, G. V. M. Williams, Shen Chong
JOURNAL OF PHYSICS-CONDENSED MATTER
(2020)
Review
Physics, Applied
Michael Jurkutat, Marija Avramovska, Grant V. M. Williams, Daniel Dernbach, Danica Pavicevic, Juergen Haase
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2019)
Article
Physics, Applied
J. J. Schuyt, G. V. M. Williams
APPLIED PHYSICS LETTERS
(2019)
Article
Physics, Applied
David M. Uhrig, Grant V. M. Williams, Gabriel Bioletti, Shen Chong
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Vaibhav S. Bhugra, Grant V. M. Williams, Shen Chong, Thomas Nann
FRONTIERS IN CHEMISTRY
(2020)
Article
Nuclear Science & Technology
J. J. Schuyt, G. V. M. Williams
RADIATION MEASUREMENTS
(2020)
Correction
Chemistry, Multidisciplinary
Vaibhav S. Bhugra, Fraser R. Hughson, Grant V. M. Williams, Shen V. Chong, Thomas Nann
FRONTIERS IN CHEMISTRY
(2020)
Article
Optics
H. Nalumaga, J. J. Schuyt, G. V. M. Williams, D. J. Clarke, S. Chong
JOURNAL OF LUMINESCENCE
(2020)
Article
Chemistry, Multidisciplinary
Vaibhav Singh Bhugra, Mohsen Maddah, Grant Williams, Natalie Plank, Thomas Nann
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)