Article
Materials Science, Multidisciplinary
E. Malchukova
Summary: This study investigates the effect of rare earth codoping on the emission ability of aluminoborosilicate glasses. The results show that the luminescence intensity and reduction efficiency of Sm ions exhibit nonlinear behavior with increasing rare earth concentration.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Multidisciplinary
Ramandeep Kaur, R. B. Rakesh, Sachin G. Mhatre, Vijeta Bhatia, Dinesh Kumar, Harpreet Singh, Supreet Pal Singh, Ashok Kumar
Summary: Trivalent neodymium ion activated glasses were synthesized and studied for their structural, physical, optical, and thermoluminescence properties. One sample was identified as a potential candidate for radiation dosimetry based on its linear dose response curve.
Article
Chemistry, Physical
Peipei Dang, Guodong Zhang, Wei Yang, Hongzhou Lian, Guogang Li, Jun Lin
Summary: Combining rare-earth ions with halide perovskites can produce interesting optical properties in the visible and NIR regions. In this study, RE3+ ions (RE: Nd, Ho, Er, Tm) were successfully introduced into Cs4Cd1-wMnwBi2Cl12 quadruple perovskites through a hydrothermal method. The materials exhibited characteristic emission of RE3+ in the red and NIR regions via constructing a Mn2+ energy bridge. The energy transfer processes and mechanism were confirmed, and an evolution process from direct to indirect band gaps was verified.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Ceramics
Yin Zhang, Wei Zhu, Hao Xu, Yubo Wu, Yuhan Zou
Summary: 24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass with good thermal stability was prepared. The effect of doped rare earth ions on the glass structure was studied using infrared spectroscopy. High energy emission photons can be obtained by low energy excitation sources. Fluorescence decay analysis showed that the fluorescence lifetime increased with the concentration of doped rare earth ions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Jiuzhi Cui, Xin-Yuan Sun, Yufeng Wen, Chenxi Zhang, Runchuan Chen, Miaochun Wu, Meidong Yu, Chaoyuan Li, Zhuohao Xiao, Jing Wang
Summary: In this study, the emission peak of europium (Eu) ions in borosilicate glasses is tuned by adjusting the SiO2 to B2O3 ratio and the concentration of Eu ion dopants. It is observed that the emission peak can be redshifted by increasing the content of SiO2 or by introducing Eu2O3. Cyan emission is achieved by altering the [SiO4] tetrahedra, [BO4] tetrahedra, and [BO3] triangles within the glass. The results highlight the relationship between glass network structure, Eu ion concentration, and visible light emission.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Optics
I Khan, M. Shoaib, Norah Salem Alsaiari, S. M. Wabaidur, G. Rooh, N. Srisittipokakun, I Ullah, J. Kaewkhao
Summary: Glass sample with B2O3-SiO2-CaO-BaO: Sm2O3 formula was synthesized and its optical and luminescence properties were investigated. The results show that the glass has high compactness and rigidity, making it suitable for multi-color display device applications.
Article
Materials Science, Ceramics
Rajat Bajaj, A. S. Rao, G. Vijaya Prakash
Summary: This paper reports the synthesis of thermally stable borosilicate glasses doped with europium ions. Characterization techniques such as XRD, DSC, and TGA were used to study the optical properties and thermal stability of the glasses. The research also analyzed the PL excitation, emission, and decay of the glasses for potential application in visible red photonic devices.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Tijana Stamenkovic, Dejan Pjevic, Jugoslav Krstic, Maja Popovic, Vladimir Rajic, Vesna Lojpur
Summary: A series of SrGd2O4 samples doped with different concentrations of Sm3+ and Dy3+ were prepared through glycine-assisted combustion synthesis. X-ray Powder Diffraction investigation confirmed the presence of pure orthorhombic lattice SrGd2O4. Energy Dispersive X-ray Spectroscopy showed that the desired elements were incorporated in the structure. Field Emission Scanning Electron Microscopy revealed the morphology of the samples as porous aggregated particles consisting of approximately 50 nm-sized spherical particles. Mercury Intrusion Porosimetry demonstrated the presence of a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy confirmed the successful incorporation of Dy3+ and Sm3+ ions. Down-conversion luminescence spectra showed typical emission transitions for Sm3+ and Dy3+ ions. The energy band gap of the doped samples was calculated to be 4.3 eV using UV-VIS Diffuse Reflectance Spectroscopy. UV-VIS Absorption Spectroscopy observed the photocatalytic degradation process, with approximately 50% of Rhodamine B being mineralized after 4 hours of simulated Sun exposure.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Sharafudeen Kaniyarakkal, Kesavulu Culala Rajasekharaudayar, Rajesh Dagupati, Yang Li, Sabina Drewniak, Zhi Chen, Vijayakumar Sadasivan Nair, Shiju Edappadikkunnummal
Summary: In this study, Tm3+/Yb3+ co-doped glasses were developed and the energy transfer processes and up-conversion luminescence mechanism were investigated. The results showed that the developed glasses have promising properties for spectral conversion and emission applications in the visible and near infrared range.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jiuzhi Cui, Xin-Yuan Sun, Yufeng Wen, Runchuan Chen, Meidong Yu, Wenhao Du, Zhuohao Xiao
Summary: This study systematically investigated the effect of different metal oxides substitution on the optical properties of barium borosilicate glass. The results showed that the cyan light emission can be easily tuned by altering the concentration of the catalyst.
Article
Materials Science, Multidisciplinary
Shivani Singla, Sandeep Kaur, Nancy Mahendru, Om Prakash Pandey, Neetu Chopra, Gopi Sharma
Summary: This study reported the modification of spectral features in gold nanoparticles dispersed Dy3+ doped bismuth borosilicate glasses and observed significant enhancement in emission intensities.
Article
Materials Science, Multidisciplinary
L. T. Chen, X. T. Ren, Y. N. Mao, J. J. Mao, X. Y. Zhang, T. T. Wang, M. L. Sun, T. S. Wang, M. M. Smedskjaer, H. B. Peng
Summary: The study investigated the effects of irradiation on sodium borosilicate glasses and International Simple Glass (ISG), revealing the saturation of hardness, modulus, and volume changes at a certain irradiation dose, and a significant increase in crack initiation resistance (CR). The structural changes in borosilicate glasses were also examined, showing a transformation of BO4 to BO3 groups upon irradiation with heavy ions. These findings suggest the importance of boron structures in controlling the macroscopic radiation effects on glasses.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
A. Manivannan, G. Saravanan, P. Ravisankar, Soumee Chakraborty, Kitheri Joseph, V Jayaraman
Summary: Enthalpy increment data were obtained for borosilicate and doped borosilicate glasses containing uranium oxides and plutonium surrogates. The specific heat of the glasses was calculated and compared, and the thermal stability and network structure of the glasses were investigated using micro Raman spectroscopy.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Ceramics
Masayuki Nogami, Vu Xuan Quang, Ho van Tuyen, Le Xuan Hung
Summary: Rare-earth doped glasses have shown potential applications in light-emitting devices. However, developing silicate glasses with excellent photoluminescence performance remains difficult. In this study, we investigated the reduction of rare-earth ions in doped glasses through heating in a hydrogen gas atmosphere or X-ray irradiation. We successfully synthesized Al2O3-SiO2 glasses doped with Sm3+ and Eu3+ ions, which exhibited strong photoluminescence. The Sm3+ and Eu3+ ions were reduced to their divalent states when heated in hydrogen gas, while only Sm3+ ions were reduced to Sm2+ ions when irradiated with X-rays. It was also found that the reduced Sm2+ ions in the glass could easily be oxidized to Sm3+ ions by heating in air. The fast redox reaction between Sm3+ and Sm2+ ions makes the Sm3+-doped Al2O3-SiO2 glasses suitable for X-ray therapy and sensor applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Xin Li, Jiangkun Cao, Mokang Huang, Mingying Peng
Summary: Bismuth (Bi) doped glasses and fibers have gained attention for their broad and long lived near infrared (NIR) emission. Codoping rare earth ions is a feasible way to modulate the NIR emission properties of Bi, but limited success have been achieved. By investigating nonactive rare earth (RE) codoped aluminoborate glasses, it is found that the addition of nonactive RE ions changes the glass structure and optical basicity, altering the optical properties of Bi.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Physics, Condensed Matter
S. N. Abolmasov, A. S. Abramov, A. V. Semenov, I. S. Shakhray, E. I. Terukov, E. V. Malchukova, I. N. Trapeznikova
Article
Energy & Fuels
Charlotte Weiss, Seonyong Park, Jeremie Lefevre, Bruno Boizot, Christian Mohr, Olivier Cavani, Sandrine Picard, Rufi Kurstjens, Tim Niewelt, Stefan Janz
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)
Article
Energy & Fuels
R. Lang, J. Schoen, J. Lefevre, B. Boizot, F. Dimroth, D. Lackner
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)
Article
Energy & Fuels
Karim Medjoubi, Jeremie Lefevre, Laura Vauche, Elias Veinberg-Vidal, Christophe Jany, Cedric Rostaing, Vincent Amalbert, Fabien Chabuel, Bruno Boizot, Romain Cariou
Summary: This study evaluates the potential of III-V//Si solar cell technology for space applications, presenting experimental results on degradation of wafer bonded 2-terminal III-V//Si solar cells under 1 MeV electrons irradiation. The impact of electron irradiation on effective diffusion length in the silicon bottom cell was calculated using the Internal Quantum Efficiency model. Paths towards higher EOL III-V//Si solar cells are discussed for improvement.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Energy & Fuels
Seonyong Park, Olivier Cavani, Jeremie Lefevre, Carsten Baur, Victor Khorenko, Bruno Boizot
Summary: The behavior of electron-irradiated 3G28 InGaP/GaAs/Ge triple junction solar cells and their component cells was investigated at low temperatures and low illumination intensity. Significant performance degradation was observed, with the bottom sub-cell showing higher tunneling current and degradation effects compared to the top and middle sub-cells, which were more uniform in doping profile due to epitaxial deposition. However, the degradation associated with tunneling significantly recovered in the bottom cell at 300 K.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Ceramics
E. Malchukova, N. G. Tyurnina, E. Terukov
Summary: The relationship between the optical properties and structural changes of aluminoborosilicate (ABS) glass doped with Nd3+ ions was studied, with variations observed in luminescence and electron paramagnetic resonance spectra depending on Nd2O3 concentration and irradiation dose. Modifications in emission band shape and position, as well as EPR signal, were found in relation to the concentration of the dopant.
GLASS PHYSICS AND CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
E. Malchukova
Summary: This study investigates the effect of rare earth codoping on the emission ability of aluminoborosilicate glasses. The results show that the luminescence intensity and reduction efficiency of Sm ions exhibit nonlinear behavior with increasing rare earth concentration.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Materials Science, Multidisciplinary
Qigui Yang, Zhongwen Chang, Luca Messina, Nils Sandberg, Nicolas Castin, Amine Yousfi, Elin Toijer, Mattias Thuvander, Bruno Boizot, Vincent Metayer, Dominique Gorse-Pomonti, Paer Olsson
Summary: In this study, the clustering of copper in iron under irradiation was investigated using experiments, cluster dynamics, and atomistic kinetic Monte Carlo simulations. The results from experiments and simulations showed satisfactory agreement, confirming the validity of the models. The simulations also indicated that the potential hardening caused by copper clustering in spent-fuel repository conditions over a long period of time is negligible.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Proceedings Paper
Physics, Fluids & Plasmas
Karim Medjoubi, Romain Cariou, Laura Vauche, Elias Veinberg-Vidal, Christophe Jany, Cedric Rostaing, Vincent Amalbert, Fabien Chabuel, Bruno Boizot
2020 IEEE RADIATION EFFECTS DATA WORKSHOP (IN CONJUNCTION WITH 2020 NSREC)
(2020)
Proceedings Paper
Energy & Fuels
Robin Lang, Jonas Schoen, Birte-Julia Godejohann, Jeremie Lefevre, Bruno Boizot, Frank Dimroth, David Lackner
2020 47TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2020)
Proceedings Paper
Energy & Fuels
Romain Cariou, Hung-Ling Chen, Andrea Cattoni, Karim Medjoubi, Jeremie Lefevre, Bruno Boizot, Oliver Hoehn, David Lackner, Frank Dimroth, Stephane Collin
2019 IEEE 46TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
(2019)
Proceedings Paper
Engineering, Aerospace
Karim Medjoubi, Romain Cariou, Jeremie Lefevre, Laura Vauche, Elias Veinberg-Vidal, Christophe Jany, Cedric Roasting, Vincent Amalbert, Bruno Boizot
2019 EUROPEAN SPACE POWER CONFERENCE (ESPC)
(2019)
Proceedings Paper
Engineering, Aerospace
David Lackner, Jonas Schoen, Robin Lang, Birte-Julia Godejohann, Felix Predan, Michael Schachtner, Bruno Boizot, Jeremie Lefevre, Christoph Floetgen, Joerg Schwar, Frank Dimroth
2019 EUROPEAN SPACE POWER CONFERENCE (ESPC)
(2019)
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)