Article
Chemistry, Physical
G. Souadi, U. H. Kaynar, M. Oglakci, M. Sonsuz, M. Ayvacikli, M. Topaksu, A. Canimoglu, N. Can
Summary: In this study, lithium molybdate phosphor was synthesized by a gel combustion method and its thermoluminescence properties were investigated. The kinetic parameters of the phosphor were determined using various methods, and the results showed that it has potential applications in dosimetry, particularly in clinical dose monitoring.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Andrzej Gasiorowski, Piotr Szajerski, Jose Francisco Benavente Cuevas
Summary: Phosphate glass samples doped with Tb2O3 oxide were synthesized and studied for high-dose radiation dosimetry. Increasing terbium oxide concentration significantly enhances thermoluminescence yield, making the material suitable for such dosimetry applications. The system allows for re-use of dosimeters and requires only a basic TL reader for readings.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
M. Sonsuz, M. Topaksu, J. Hakami, N. Can
Summary: In this study, LaBO3 and LaBO3:Eu3+ phosphor samples were synthesized using solid state reaction technique. The samples were analyzed using XRD to determine their crystal structure. The sample doped with 0.5 mass % Eu showed the highest thermoluminescence intensity after 5 Gy of beta irradiation. The dose response of the samples was evaluated by irradiating them with beta radiation ranging from 0.1 to 100 Gy. The study found that the sample exhibited linear behavior up to 5 Gy and quasi-linear behavior above this dose. The trap structure and kinetic parameters of the Eu-doped LaBO3 thermoluminescence curves were determined using various experimental methods. The GCD method was used to calculate trap depths and frequency factors.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Optics
Aly Okasha, S. Y. Marzouk, A. M. Abdelghany
Summary: A glass composition was successfully prepared using the melt quenching technique, with varying CuO ratios added to alter its optical properties, resulting in band-pass or cut-off glass filters. The changing CuO content influenced the optical absorption properties, with structures examined through FTIR absorption spectroscopy. The reasons for the filtering properties were discussed in relation to optical absorption, and the structural changes in the glass samples were analyzed using FTIR absorption spectroscopy.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
S. Sholom, S. W. S. McKeever
Summary: Analysis of thermoluminescence (TL) glow curves in aluminosilicate glass shows that the glow curve in the -400 K--600 K region can be partly explained by thermally excited tunneling from a defect excited state to the recombination center. Additionally, a TL signal is observed due to thermal excitation directly to the delocalized band from a distribution of trapping states. Optical bleaching removes the TL signal from this region while producing an optically stimulated luminescence (OSL) signal. The OSL decay curve can be described by optically excited tunneling, along with ionization of trapped electrons directly to the delocalized band.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Ashraf A. Abul-Magd, A. A. H. Basry, Sawsan M. Abu El Hassan, Ahmad S. Abu-Khadra
Summary: A novel alkali-borate glass system with different concentrations of MnO2 was produced using the melt quenching technique. The structural, optical, and luminescence properties of the glass were investigated, and the results showed potential applications in multifunctional optical and optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Nick F. Borelli, Joseph F. Schroeder
Summary: This article discusses the use of photosensitive glasses in coloring and patterning glass, highlighting the ability to obtain not only color but also other properties through the introduction of light exposure. It presents key developments at Corning in the context of the International Year of Glass 2022, along with examples of optical devices derived from this process.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Physical
G. Souadi, Umit H. Kaynar, M. Sonsuz, S. Akca-Ozalp, M. Ayvacikli, M. Topaksu, O. T. Ozmen, N. Can
Summary: The thermoluminescence properties of GAB samples doped with different concentrations of Sm3+ were studied. Two TL glow peaks were observed, with the intensity of one peak increasing with a faster heating rate. By calculating the activation energies and conducting dose-response experiments, the potential of this material for radiation dosimetry applications was demonstrated.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Optics
R. A. Tafida, M. K. Halimah, M. N. Azlan, S. B. Adamu, I. I. Lakin
Summary: The present study investigates the effect of samarium oxide concentration on the linear optical properties of zinc tellurite glasses. The results show that the density and molar volume of the glasses increase with an increase in samarium oxide concentration. The glasses exhibit amorphous structure and potential for laser application, as demonstrated by UV-Vis absorption and emission spectra.
Article
Chemistry, Inorganic & Nuclear
Jiawei Zhang, Zhijun Wang, Xiaoxue Huo, Yu Wang, Zhiping Yang, Dawei Wang, Jinxin Zhao, Panlai Li
Summary: Adjusting doping concentration can achieve deep red persistent luminescence with different durations and intensities; comprehensive analysis of material defects through thermoluminescence experiments led to significant improvement in long persistent luminescence; the dual-mode system is suitable not only for anti-counterfeiting, but also for multi-layer information encryption design.
DALTON TRANSACTIONS
(2022)
Article
Optics
Sibel Akca-Ozalp, Z. Gizem Portakal-Ucar, Mehmet Oglakci, Mehmet Yuksel, Y. Ziya Halefoglu, Mustafa Topaksu
Summary: This study investigated the thermoluminescence (TL) properties of dolomite mineral in Mersin/Turkey, analyzing its structural, morphological, and elemental characteristics, as well as conducting TL measurements and kinetic analysis. The results showed the TL response, reusability, and kinetic parameters of dolomite, providing valuable data for understanding its TL behavior.
JOURNAL OF LUMINESCENCE
(2021)
Article
Instruments & Instrumentation
K. Bulcar, M. Oglakci, U. H. Kaynar, M. Ayvacikli, G. Souadi, M. Topaksu, N. Can
Summary: The study focused on thermoluminescence behavior of Dy activated lanthanum calcium borate phosphors, revealing linear TL response and determining the range of activation energy and pre-exponential factor values. It was also observed that heating rate affects the TL behavior, with an anomalous effect observed in Dy3+ doped La2CaB10O19 sample, for which a semi-localized transition model was employed.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2021)
Article
Materials Science, Multidisciplinary
Rajni Bala, Ashish Agarwal, Sujata Sanghi, Sanjay Gaur, Saroj Rani
Summary: The heavy metal-based PbO·Bi2O3·Ga2O3 glasses were synthesized using the standard melt-quenching technique. The physical and optical properties of the glasses were investigated. The results showed that the density and molar volume decreased with increasing Bi2O3 content, and the glasses had a wide transmission range suitable for infrared applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Vishnu V. Jaiswal, D. Haranath
Summary: This study investigates the thermal stability of daylight excitable SrAl2O4:Eu2+,Dy3+ (SRA) nanophosphor for fiber-optic temperature sensor applications. The SRA nanophosphor showed stability up to 70 degrees Celsius, but exhibited thermoluminescence glow curve centered at around 75 degrees Celsius.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Ceramics
Abeer S. Altowyan, Umit H. Kaynar, K. Bulcar, M. Oglakci, Z. G. Portakal-Ucar, Jabir Hakami, M. Topaksu, N. Can
Summary: This study focused on investigating the thermoluminescence characteristics of YAl3(BO3)(4) (YAB) phosphors modified with different contents of Sm3+ ions. The study found three thermoluminescence peaks at 70, 235, and 408 degrees C for YAB: Sm3+ phosphors. The results showed that the sample could be successfully used for thermoluminescence dosimetry applications.
CERAMICS INTERNATIONAL
(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)