Article
Materials Science, Ceramics
Jiale Ding, Chengyan Li, Liqiao Zhu, Dongyi Zhao, Jun Li, Yaxun Zhou
Summary: This study successfully synthesized Pr-3+/Tm-3+/Er-3+ tri-doped tellurite glass and obtained broadband luminescence. The findings are of great significance for the development of broadband fiber amplifiers and ultra-short pulsed lasers.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Chi Zhang, Kexuan Han, Dechun Zhou, Chunlai Song, Pengfei Xu, Tong Wu, Chenquan Huang, Sheng Qiang, Qirun Wu
Summary: The luminescent properties of high concentration Tm3+ ions doped fluorotellurate glass samples were examined based on absorption and fluorescence spectra, revealing their potential application in similar to 2 μm band fiber lasers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Junhao Xing, Fei Shang, Guohua Chen
Summary: The study focuses on the structure, properties, and potential application value of Yb3+/Tm3+ codoped glass suitable for rare-earth-doped luminescence, particularly in the field of optical temperature sensing.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Qianwen Wang, Xinmin Yu, Wuyunga Bao, Tong Wang, Hongbo Zhang, Chunhui Su
Summary: Tm2O3-Tb4O7-Sm2O3 tri-doped glass ceramics with eulytite-type structure were prepared by melt-annealing and crystallization. The crystallization can be controlled by adjusting the heat treatment temperature or time. XRD Rietveld analysis revealed the doping of rare earth ions into the Ba3Gd(PO4)3 lattice. The optical band gap values of the glass ceramics decreased significantly after heat treatment. Energy transfer from Tm3+ and Tb3+ to Sm3+ was confirmed by emission spectra and decay curves, and white light emission was achieved by adjusting the doping concentration of Sm2O3. The maximum relative sensitivity (Sr) was calculated to be 2.36% K-1 based on the temperature-dependent properties of the fluorescence intensity ratios of Sm3+/Tm3+ and Sm3+/Tb3+. The results suggest that Tm2O3-Tb4O7-Sm2O3 tri-doped glass ceramics can be potential materials for w-LEDs and optical temperature measurement.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Anfei Chen, Hailin Gong, Rongfei Wei, Hai Guo, Fangfang Hu
Summary: Developing transparent glass ceramics (GC) with high stability and good repeatability for optical fiber temperature sensing is significant. In this study, NaGd2F7 nanocrystals (NCs) were successfully produced through self-crystallization, and their dispersion in the glass host was controlled by heat treatment. The enhanced up-conversion intensity and prolonged lifetime of Tm3+ emission demonstrate better crystallization of NaGd2F7 GC. The optical temperature performance of NaGd2F7 GC based on fluorescence intensity ratio was explored, showing high sensitivity and precision, making it a potential material for temperature measurement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
M. Sedano, S. Babu, R. Balda, J. Fernandez, A. Duran, M. J. Pascual
Summary: Tm3+ doped oxyfluoride glass-ceramics containing NaLaF4 nanocrystals were prepared by spark plasma sintering. Transparent glass-ceramics were obtained by optimizing the sintering parameters. The presence of another phase and the luminescence properties were observed in samples with higher doping concentrations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Jose J. Velazquez, Rolindes Balda, Joaquin Fernandez, Giulio Gorni, Mercedes Sedano, Alicia Duran, Dusan Galusek, Maria J. Pascual
Summary: Transparent NaLuF4 glass-ceramics doped with Tm3+ and Tm3+/Yb3+ were prepared by melting-quenching and thermal treatment, where NaLuF4 nanocrystals were found as the only crystalline phase, showing tunable up-conversion emission from near-infrared to blue under different excitation wavelengths. Energy transfer between ions and incorporation of rare earth ions were confirmed, demonstrating the potential for various optical applications.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Junhao Xing, Feng Luo, Yaoyi Qin, Xiaolu Chen, Yingying Liang, Zhixin Gao, Fei Shang, Huarui Xu, Guohua Chen
Summary: Multifunctional BaNb2O6:Yb3+/Er3+/Tm3+ transparent glass-ceramics were successfully prepared, demonstrating excellent optical and electrical properties, making them promising for temperature sensors and transparent electronic devices.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Shiliang Kang, Tian Qiao, Xiongjian Huang, Changsheng Yang, Xiaofeng Liu, Jianrong Qiu, Zhongmin Yang, Guoping Dong
Summary: This study demonstrates the fabrication of a Tm3+-doped tellurate glass-ceramic (GC) fiber, enabling enhanced lasing action at approximately 2 μm and increased optical conversion efficiency. The improvement of laser performance in GC fiber is induced by the significant change of the local environment surrounding Tm3+ ions due to the formation of nanocrystals within the glass fibers.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jian Tang, Xingui Dong, Junhao Xing, Yongfeng Tang, Lina Qin, Fei Shang, Guohua Chen
Summary: In this work, Tm3+/Dy3+ co-doped BaO-B2O3-P2O5-Na2O glass was prepared and NaBaPO4 glass-ceramics were obtained by heat treatment. The results showed that the transmittances of the glass and glass-ceramic in the visible light range were 90% and 80% respectively, and the emitting color could be adjusted by changing the ion concentrations.
Article
Chemistry, Inorganic & Nuclear
Qihao Zhang, Liang Li, Fuwen Liu, Sixing Li, Xiantao Wei, Wenming Wang, Hongmei Chen, Yan Pan, Yong Li
Summary: In this study, Tm3+/Yb3+ co-doped Ba3Gd2F12 oxyfluoride glass-ceramic was synthesized and a high sensitivity optical thermometer was proposed. The crystallization process resulted in an enhancement of emission intensity, prolonged lifetime of Tm3+ ions, and Stark splitting of emission spectra. The optical properties of Ba3Gd2F12: Tm3+ glass-ceramics were explored based on the fluorescence intensity ratio of Tm3+ ion transitions, and a maximum relative sensitivity of 1.02% K 1 at 457 K was achieved.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Linrong Yang, Mengyuan Liu, Zhixin Gao, Bolin Jiang, Wenbin Zhou, Zhaoxia Wu, Fei Shang, Guohua Chen
Summary: A series of Dy3+/Tm3+ double-doped Na2O-B2O3- SiO2-Gd2O3-NaF-MoO3-Sb2O3 glasses were fabricated, and glass ceramics were achieved through crystallization. The transmittance of glass and glass ceramics in the visible range were over 85% and 60%, respectively. With the adjustment of Tm3+ ions concentration, white light emission close to the standard white-light was achieved under UV excitation, and the luminous intensity of glass ceramics was significantly enhanced compared to glass. The findings suggest the potential use of Dy3+/Tm3+ doped glass and glass ceramics in UV-triggered W-LEDs manufacturing.
Article
Engineering, Electrical & Electronic
Rui Yun, Li Luo, Jingqi He, Jiaxi Wang, Xiaofen Li, Weiren Zhao, Zhaogang Nie
Summary: The study developed a lanthanide-doped system with adjustable multicolor and white up-conversion emission in GdVO4 (GVO): Tm3+-Ho3+-Yb3+/-Nd3+ phosphors, and investigated their phase structures and the effect of Ho3+ concentration on the emission. It was found that these phosphors show potential applications in the fields of displays, lasers, and optical telecommunication.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Optics
Jamila S. Alzahrani, Z. A. Alrowaili, Canel Eke, I. O. Olarinoye, M. S. Al-Buriahi
Summary: Highly optical transparent tellurite glasses doped with Er3+, Tm3+, and Nd3+ were investigated as shielding materials against charged and uncharged radiation. The mass attenuation coefficient and stopping powers of different particles in the glasses were calculated using XCOM software and simulation data. The glasses showed variations in their stopping powers and ranges depending on particle kinetic energy and glass composition. Compared to traditional shielding substances, the TZWB-M glasses are recommended for the design of radiation safety structures.
Article
Optics
Qiu Li, Jianshu Dong, Qingguo Wang, Hengyu Zhao, Yanyan Xue, Huili Tang, Xiaodong Xu, Jun Xu
Summary: The single crystal of GdScO3 codoped with Tm3+ and Tb3+ ions was successfully grown using the Edge-defined Film-fed Growth Method (EFG) for the first time. The codoping of Tb3+ depopulated the F-3(4) energy level and enhanced the emission at 1.5 μm region, making it a favorable laser medium for 1.5 μm-laser operation.
JOURNAL OF LUMINESCENCE
(2021)
Article
Biochemistry & Molecular Biology
Vesna Stanojlovic, Anna Mueller, Ali Moazzam, Arthur Hinterholzer, Katarzyna Ozga, Lukasz Berlicki, Mario Schubert, Chiara Cabrele
Summary: The study introduces an acyclic but rigid β-hairpin scaffold XWXWXpPXK(/R)X(R) that exhibits high conformational stability, accommodating various side chains and showing versatility in accommodating different amino acid compositions.
Article
Energy & Fuels
Mudasser Husain, Nasir Rahman, Rajwali Khan, Syed Zulfiqar, Shaukat Ali Khattak, Saima Naz Khan, Mohammad Sohail, Anwar Iqbal, Ali H. Reshak, Aurangzeb Khan
Summary: This study presents the physical properties of fluoroperovskite NaQF3 (Q = Ag, Pb, Rh, Ru) compounds using first-principle calculations. The compounds were found to be structurally stable, with elastic, anisotropic, and ductile properties. Electronic band structures revealed that NaAgF3 and NaRuF3 exhibit 100% spin polarization at the Fermi level, indicating a half-metallic behavior, while NaPbF3 shows metallic behavior. The predicted outcomes from these electronic and magnetic properties suggest potential applications in electronic and magnetic technology.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Muhammad Arif, Ali H. Reshak, Shams U. Zaman, Mudasser Husain, Nasir Rahman, Syed Awais Ahmad, Muhammad Saqib, Sajid Khan, Muhammad M. Ramli, Aurangzeb Khan
Summary: The structural, elastic, electronic, and optical properties of Cs-based halide perovskite compounds CsHgX3 (XF and Cl) were studied using density functional theory (DFT). CsHgF3 was found to be an indirect semiconductor, while CsHgCl3 exhibited metallic nature. These materials showed high absorption and refractive index, making them suitable for optical lenses and coatings.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
B. Merabet, Ahmed J. H. Almaliky, A. H. Reshak, Muhammad M. Ramli, J. Bila
Summary: Electronic and optical properties of (Cr, Ni)-codoped 4H silicon carbide SiC were calculated, revealing a ferromagnetic order mainly attributed to Cr impurities, enhancing the quality of absorbing electromagnetic waves. The metallic character displayed by (Ni, Cr)-codoped 4H-SiC allows its use in microwave circuits. Substituting Al for Ni in (Al, Cr) or (Al, Cr)-doped 4H-SiC may improve its magnetism and enhance microwave absorbing properties in the mm-wave band.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
M. Kowalczyk, M. Kaczkan, A. Majchrowski, M. Malinowski
Summary: The study compared the optical excitation and emission spectra of trivalent europium (Eu3+) ions in Bi2ZnOB2O6 in both crystal and glass phases, finding strong orange-red emissions in both phases. The results suggest that Eu3+:BZBO has the potential to be a promising emitter of orange-red luminescence in both crystal and glass phases.
Article
Chemistry, Inorganic & Nuclear
Yurii Slyvka, Andrii A. Fedorchuk, Evgeny Goreshnik, Nazariy Pokhodylo, Jaroslaw Jedryka, Katarzyna Ozga, Marian Mys'kiv
Summary: This study focused on the synthesis, structural characterization, and investigation of the nonlinear optical properties of a novel copper(I) nitrate coordination compound based on Anor. The experimental results confirmed a much higher efficiency in second-harmonic generation for compound 1 compared to the Anor ligand molecule, as determined through calculations and experiments.
Article
Chemistry, Physical
M. A. Carpenter, E. K. H. Salje, M. B. Costa, A. Majchrowski, K. Roleder
Summary: The study analyzed the order parameter coupling associated with the first order, improper ferroelastic transition in PbZrO3, showing that the coupling between two order parameters via common strains may contain contributions from higher order terms. The elastic and anelastic properties of the material change as the transition point is approached, exhibiting softening, discontinuous stiffening, and further stiffening in the stability field of the orthorhombic structure. Additionally, the absence of softening due to certain terms implies a slow relaxation time for changes in the order parameters in response to induced shear strain.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
A. Brenier, A. Majchrowski, E. Michalski
Summary: The study investigated the optical phenomena in biaxial crystals using a polarimetric method and an interferential conoscope, showing that optical activity in crystals changes the phase difference, involving the influence of orbital angular momentum.
Article
Chemistry, Physical
Asma Hassan, Muhammad Ismail, Ali H. Reshak, Zeshan Zada, Abdul Ahad Khan, Khadija Siraj, M. Fazal Ur Rehman, Muhammad Arif, Khadija Sira, Shafqat Zada, G. Murtaza, Muhammad M. Ramli
Summary: In this paper, a comparative study was conducted on the structural, electronic, and spectroscopic properties of three heterocyclic polymers: polypyrrole, polythiophene, and polyfuran. The effects of heteroatoms (O, N, S) on the properties of these polymers were investigated using quantum chemical calculations. The calculated results showed excellent agreement with experimental data, and the predicted order of attraction among the polymers was polythiophene > polyfuran > polypyrrole based on the optimized geometric parameters and spectroscopic studies.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Physics, Condensed Matter
Houssam Eddine Hailouf, L. Gacem, A. Gueddim, Ali H. Reshak, K. O. Obodo, B. Bouhafs
Summary: Recent experiments have shown that Na2ZnP2O7 host lattice doped with transition metal ions has potential as luminescent materials. A detailed study using ab-initio DFT-based calculations reveals the effects of Fe dopants on the properties of the host lattice. The electronic band structure, density of states, and dielectric functions of the pristine and doped crystal structure show changes induced by the Fe dopant ion.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Energy & Fuels
Jurij Grechenkov, Aleksejs Gopejenko, Dmitry Bocharov, Inta Isakovica, Anatoli I. Popov, Mikhail G. Brik, Sergei Piskunov
Summary: In this study, we investigated the less studied solid solutions of CuGaS2, AgGaS2, and CuGaSe2 chalcopyrites using ab initio methods. Our theoretical simulations indicate that excess of In and Se in the solid solutions leads to band gap narrowing and broadening of the absorption spectra. These findings suggest potential photovoltaic applications for these compounds and demonstrate the usefulness of our developed methodology for further study of other promising chalcopyritic compounds.
Article
Optics
T. Zhezhera, P. Gluchowski, M. Nowicki, M. Chrunik, A. Majchrowski, D. Kasprowicz
Summary: Enhanced near-infrared emission at 1531 nm of Er3+ ions excited by Bi3+ and/or Yb3+ ions was observed in Bi3TeBO9:Yb3+/Er3+ phosphors. The synthesis of microcrystalline powders of Bi3TeBO9:Er3+, Bi3TeBO9:Yb3+, and Bi3TeBO9:Yb3+/Er3+ by means of the modified Pechini method was confirmed by XRD measurements. The low phonon energy of the Bi3TeBO9 matrix was revealed by mu-Raman investigations. Energy transfer from Bi3+ ions or Yb3+ ions to Er3+ ions resulted in the enhanced emission at 1531 nm in the Bi3TeBO9:Yb3+/Er3+ system. The potential use of Bi3TeBO9:Yb3+/Er3+ powders as spectral converters in photovoltaic devices was indicated by the results.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Marcin Kowalczyk, Marcin Kaczkan, Andrzej Majchrowski, Michal Malinowski
Summary: The spectroscopic properties of Eu3+-doped Bi12SiO20 (BSO) were studied and compared with Eu3+-doped Bi12GeO20 (BGO). Luminescence was observed due to the excitation of Eu3+ at the D-5(0) and D-5(1) levels. The Judd-Ofelt theory was used to calculate radiative lifetimes, omega parameters, and other transition probabilities. The strongest luminescence observed was attributed to the D-5(0) -> F-7(0) transition at 578 nm, similar to BGO sillenite.
Article
Materials Science, Multidisciplinary
Zeshan Zada, Junaid Khan, Abdul Ahad Khan, Ali H. Reshak, Dania Ali, Fazal Ur Rehman, Inayat Urrahman, Muhammad Saqib, Muhammad Irfan, Muhammad M. Ramli
Summary: In this study, the detailed properties of the rare-Earth based XMn2Si2 (X=Dy, Er) compounds were investigated using the FP-LAPW method with GGA+U in the ferromagnetic phase. The results show that the ferromagnetic phase is the most suitable for these compounds, as supported by previous experimental findings. The compounds exhibit metallic behavior with hybridization between the Dy/Er-f and Mn-d states in the valence band and the Si-p state in the conduction band. The rare-Earth based DyMn2Si2 compound shows stronger ferromagnetic behavior patterns compared to ErMn2Si2. Additionally, ErMn2Si2 demonstrates high ZT values in the high-temperature region, making it a potential contender for high-temperature applications in waste heat management.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
K. Roleder, G. Catalan, A. M. Glazer, J. S. Baker, J. -H. Ko, F. H. Naqvi, S. B. Junaid, A. Majchrowski, Z. Trybula, J. Zareba, I. Lazar, D. Kajewski, J. Koperski, A. Soszynski
Summary: We have discovered a low-temperature polar phase in PbZrO3 below 270 K. The temperature dependence of polarization was determined by measuring pyroelectric current changes after poling the single crystal or ceramic in a DC electric field. This phenomenon was observed in both single crystals and ceramics, which may be related to the presence of polar (ferrielectric) antiphase boundaries within the antiferroelectric phase. The transition point was confirmed by changes in domain structure and anomalies in dielectric permittivity and losses in naturally grown single crystals and ceramic samples.
