Article
Chemistry, Physical
D. Kasprowicz, K. Jaroszewski, P. Gluchowski, E. Michalski, A. Majchrowski
Summary: Single crystals of Bi2ZnOB2O6 doped with Er3+ and Yb3+ ions were grown using the Kyropoulos method, exhibiting high values of nonlinear optical coefficients and efficient luminescence of Er3+ ions. The study investigated the structure, vibrational, and luminescent properties of the crystals for the first time, revealing the potential for use in integrated new-generation laser devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
K. Wiwatowski, K. Sulowska, R. Houssaini, A. Pilch-Wrobel, A. Bednarkiewicz, A. Hartschuh, S. Mackowski, D. Piatkowski
Summary: Luminescence thermometry is a powerful technique that allows for non-invasive temperature monitoring through light. This study presents the use of isolated single up-converting NaYF4:Er3+/Yb3+ nanocrystals as functional temperature indicators for monitoring the temperature of a single silver nanowire. The results demonstrate the precise determination of temperature distribution in the nanowire's surroundings using individual nanocrystals, which is an important step for nanoscale luminescence thermometry applications.
Article
Chemistry, Applied
Pengyu Zhou, Qingli Zhang, Fang Peng, Baoquan Sun, Xiuming Dou, Bao Liu, Dandan Han, Yongzhou Xue, Kun Ding
Summary: The pressure and temperature-dependent luminescence properties of Nd3+ : GdTaO4 for the F-3(3/2) -> I-4(9/2) transition were investigated, with potential applications in optical sensing. The emission lines corresponding to the transition were found to be highly sensitive to pressure and exhibited a strong dependence on temperature. These findings suggest that Nd3+ : GdTaO4 is a promising candidate for pressure and temperature sensors in the near-infrared spectral range.
JOURNAL OF RARE EARTHS
(2022)
Article
Optics
Lev-Ivan Bulyk, Ajeesh Kumar Somakumar, Hanka Przybylinska, P. Ciepielewski, Yu Zorenko, Ya Zhydachevskyy, I Kudryavtseva, V Gorbenko, A. Lushchik, M. G. Brik, Y. Syrotych, S. Witkiewicz-Lukaszek, A. Fedorov, Andrzej Suchocki
Summary: This study presents the spectroscopic characterization of LuAlO3:Ce3+ (LuAP:Ce) single crystalline film (SCF) and LuAP:Ce and YAlO3:Ce (YAP:Ce) single crystals under ambient and high pressures. The bandgap energies of YAP and LuAP are determined using room temperature absorption measurements, and the temperature quenching effect on the luminescence of Ce3+ in YAP:Ce is observed. The energy structure and quenching phenomena are analyzed theoretically and experimentally, revealing a discrepancy between the experimental results and the theoretical model.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Ravina Swami, Ankur Shandilya, A. K. Shukla, P. Senthil Kumar, K. Sreenivas
Summary: Temperature sensing in the range (93-773 K) using luminescence intensity ratio method has been studied in rare earth ion modified La2-x-yErxYbyTi2O7 powders and ceramics. The optimised composition with (x = 0.025, y = 0.05) shows improved upconversion luminescence. The sintered ceramic is found useful for non-contact temperature sensing with a wider operating temperature range (243-1293 K) in comparison to calcined powders (163-863 K).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Luyi Lou, Youjie Hua, Feifei Huang, Jun Zheng, Peng Qiao, Shixu Tao, Yiheng Ping, Hongping Ma
Summary: This paper introduces a low-temperature and high-pressure technology for synthesizing PiG conversion materials for high-efficiency white LDs. The hosts obtained using this method have a well-structured composition with few pores, leading to improved luminescence efficiency. The study also investigates the impact of different configurations on the luminous efficiency, providing new insights for achieving high-brightness and high-efficiency LDs.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Radoslaw Lisiecki, Jaroslaw Komar, Boguslaw Macalik, Michal Glowacki, Marek Berkowski, Witold Ryba-Romanowski
Summary: Optical absorption and luminescence spectra of different crystal samples were studied at different temperatures, revealing higher relative thermal sensitivities for YAl3(BO3)(4):Dy3+ and Lu2SiO5:Dy(3+). Analysis of the crystal structure characteristics showed that the observed differences in thermosensitive features were not directly attributed to structural factors, but were related to the rates of radiative transitions of Dy3+.
Article
Engineering, Electrical & Electronic
Kensei Ichiba, Yuma Takebuchi, Hiromi Kimura, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Tb-doped Mg2SiO4 single crystals were grown using the floating zone method, and their photoluminescence, scintillation, and thermally stimulated luminescence properties were evaluated. The results showed that the single crystals exhibited multiple emission peaks and high sensitivity in dose measurements.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Haruyuki Inui, Kyosuke Kishida, Le Li, Anna Maria Manzoni, Sebastian Haas, Uwe Glatzel
Summary: Since the proposal of the high entropy concept at the beginning of the millennium, research on this alloy family has been diverse, aiming to enhance mechanical properties. Various strengthening mechanisms, such as solid-solution hardening, hot and cold working, and precipitation hardening, can be utilized to achieve this goal. Both single- and multiphase high- and medium-entropy alloys can be optimized for mechanical strength through different processing routes, similar to conventional alloys like steels or Ni-based superalloys with only one base element.
Article
Materials Science, Multidisciplinary
Yue Li, Fangli Jing, Xuliang Zhang, Dongcheng Yang, Zhanggui Hu, Yicheng Wu
Summary: The crystal growth and spectral properties of Eu3+ doped La2CaB10O19 (Eu3+LCB) single crystals were studied. The results showed that Eu3+ ions first enter La3+ sites and then occupy Ca2+ sites after the nominal atomic ratio of Eu3+ ions exceeds 7%. The 7% Eu3+-LCB single crystal was found to be a promising medium for laser radiation in the visible region.
Article
Chemistry, Multidisciplinary
Jinshan Wei, Yuzhe Bu, Qinglin Sai, Hongji Qi, Jingbo Li, Huaimin Gu
Summary: In order to improve the n-type conductivity of single-crystal substrates, Sn element was intentionally added into β-Ga2O3 crystals as n-type dopants. However, it was found that the color of β-Ga2O3 crystal changed significantly after high-temperature remelting in the edge-defined film-fed growth (EFG) method. The carrier concentration in the colorless region was lower than that in the blue region, leading to a decrease in electrical conductivity after high-temperature remelting of Sn-doped β-Ga2O3.
Article
Materials Science, Multidisciplinary
Lin Cheng, Tao Liu, Wei-Jin Kong, Yong Liu, Fei-Ran Liu, Yi-Fei Bao, Peng Liu
Summary: It is found that natural MoS2 single crystals are susceptible to nickel ion irradiation, leading to redshifts in the vibrations of S atoms and magnetic hysteresis.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhinan Zhang, Haiming Cheng, Shiyong Teng, Keke Huang, Dayang Wang, Wensheng Yang, Renguo Xie
Summary: This paper introduces a metal halide hybrid material that exhibits thermally induced fluorescence transition, and successfully fabricates a thermochromic material with reversible and lower transition temperatures. Through the study of an organic-inorganic lead chloride hybrid crystal, it is found that the emission of the crystal changes from green to blue light when heated, and the transition process is verified by various experimental methods. In addition, this material has excellent cycling stability and low transition temperature, which is expected to be applied in the fields of anti-counterfeiting and information encryption.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Coatings & Films
Vyacheslav Vasyltsiv, Andriy Luchechko, Yaroslav Zhydachevskyy, Lyudmyla Kostyk, Roman Lys, Dmytro Slobodzyan, Rafal Jakiela, Bohdan Pavlyk, Andrzej Suchocki
Summary: The optical properties of beta-Ga2O3:Cr crystals can be significantly improved by annealing in oxygen atmosphere and codoping with magnesium, resulting in increased Cr3+ luminescence yield and resistivity changes.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Materials Science, Ceramics
Devinder Yadav, Yakun Yuan, Venkatraman Gopalan, Rishi Raj, Seohyeon Jo
Summary: A single-crystal specimen of rutile exhibited flash behavior at room temperature when the electric field was increased. The flashed specimen showed electronic conductivity and the optical properties revealed the presence of new energy levels. The flash condition significantly affected the optical second harmonic generation.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Sheng Wu, Quan Liu, Mikhail G. Brik, Puxian Xiong, Dong Wang, Guoxing Zhang, Yan Chen
Summary: In this study, an environmentally friendly phosphor emitting both blue-cyan and deep-red lights was successfully synthesized by co-doping Bi3+ and Mn4+ ions. The emission properties could be tuned by adjusting the concentration of Mn4+ ions and Li+ co-doping. The prepared phosphor showed potential applications in plant light-emitting diode lighting.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Crystallography
Yin-Pai Lin, Dmitry Bocharov, Eugene A. Kotomin, Mikhail G. Brik, Sergei Piskunov
Summary: Real-time time-dependent density-functional theory calculations were used to analyze the optical property and charge transitions of a single noble metal atom deposited on rutile TiO2(110) surface. Absorption spectra were calculated for all model structures, and transition contribution maps were computed to provide deeper insight into photo-absorption processes. The results revealed the accumulation of photogenerated electrons around the deposited gold atoms in TiO2, which is important for the design strategy of future photocatalytic materials.
Article
Materials Science, Ceramics
Xianju Zhou, Shouchun Zhao, Jie Zhang, Guotao Xiang, Sha Jiang, Li Li, Yongjie Wang, Yanhong Li, Chuan Jing, Lu Yao, Hongmei Yang, Zhen Wang
Summary: In this study, methamidine acetate and manganese divalent cation codoped CsPbCl3 quantum dots were synthesized. The results showed that these quantum dots exhibited improved optical performance, thermal stability, and thermal cyclability at high temperature. Additionally, their UV light and water stability were enhanced. Furthermore, the quantum dots were successfully applied in white LEDs with good color rendering index and correlated color temperature.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Shuai Yang, Yongjie Wang, Guotao Xiang, Sha Jiang, Li Li, Faling Ling, Huanhuan Hu, Yuanyuan Zhang, Xianju Zhou, Andrzej Suchocki
Summary: The synthesis, structural, and luminescence properties of Cr3+-activated Al-2(WO4)(3) (AWO) and Sc-2(WO4)(3) (SWO) phosphors were investigated for potential application in pc-NIR LED. The compounds exhibited broadband NIR emission upon blue excitation, with the emission maxima and FWHM depending on the substitution of AlO6 with ScO6 octahedrons. The luminescence analysis revealed the importance of crystal field strength, Racah parameters, nephelauxetic effect, and electron-phonon coupling in determining the properties of the phosphors.
JOURNAL OF LUMINESCENCE
(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
Jian Wu, Xianju Zhou, Duo Zhang, Li Li, Sha Jiang, Guotao Xiang, Yongjie Wang, Xiao Tang, Jingfang Li, Zhongmin Cao
Summary: The application of advanced anti-counterfeiting strategies and materials based on rare earth luminescent materials has been demonstrated for preventing serious counterfeiting forgery techniques. A series of lanthanide organic complexes were synthesized via hydrothermal method, which exhibited similar structures and strong emission even in the presence of coordinated water molecules. By adjusting the Eu/Tb molar ratio, tunable emission colors from green to red were achieved. The luminescence color and intensity showed significant changes with variation of pH, making the complexes potential for security anti-counterfeiting and information multiple encryption.
JOURNAL OF LUMINESCENCE
(2023)
Article
Materials Science, Ceramics
Zhongxiang Shao, Xianju Zhou, Li Li, Yongjie Wang, Faling Ling, Chuan Jing, Xiao Tang, Zhongmin Cao
Summary: This study reports the synthesis and properties of a double perovskite phosphor that exhibits broadband near-infrared emission. By employing a co-doping strategy, the thermal stability and spectral width of the phosphor were significantly enhanced. The phosphor was integrated into a LED device and its potential application in night vision was evaluated.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Ajeesh Kumar Somakumar, Lev-Ivan Bulyk, Volodymyr Tsiumra, Justyna Barzowska, Puxian Xiong, Anastasiia Lysak, Yaroslav Zhydachevskyy, Andrzej Suchocki
Summary: A Diamond Anvil cell was used to study the high-pressure behavior of LiGaO2:Fe powder, which emitted light in the near-infrared region with a 28% quantum efficiency at ambient conditions. The powder consisted of nano-crystallites with an average size of about 32 nm. High pressure transformed the LiGaO2 polymorph from β to α structure at around 3 GPa. Further increasing pressure caused the quenching of Fe3+ luminescence due to material amorphization. A 0.25% iron-doped LiGaO2 phosphor was synthesized using a high-temperature solid-state reaction method and characterized using various techniques. The phosphor exhibited a photoluminescence band around 746 nm, with a 28% quantum efficiency at ambient conditions, and the wavelength shifted with increasing pressure. Mechanoluminescence properties in the NIR spectral region were also observed.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yanhong Li, Zhiting Song, Qifeng Zhang, Kai Shu, Hongming Hu, Yi Lu, Xiao Tang, Xianju Zhou, Xijun Wei, Yunhuai Zhang
Summary: In this work, Ni-Co PBA quantum dots embedded in N-doped carbon (CC-Ni-Co PBA) were synthesized through a facile coprecipitation method and in situ polymerization. The obtained electrode exhibited a high specific capacity of 333.7 C g(-1) and excellent cycling stability with 82% retention of capacity after 10,000 cycles in an aqueous alkaline electrolyte. An asymmetric alkaline battery device was also assembled, achieving a maximum energy density of 33.2 W h kg(-1) and a power density of 3.1 kW kg(-1).
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Jinyu Ma, Qing Sun, Chuan Jing, Faling Ling, Xiao Tang, Yanhong Li, Yongjie Wang, Sha Jiang, Kexin Yao, Xianju Zhou
Summary: Supercapacitors cannot replace lithium-ion batteries due to their lower energy density and voltage range. However, they can serve as supplements for battery charge storage or transmission devices. This study focuses on the design of transition metal oxide-based electrodes with high cycling capacitance retention. The researchers found that Mn doping enhances the adsorption and desorption of certain ions, leading to improved electrochemical reactions. The use of SAC@Ni2Co0.95Mn0.05-LDH electrode material in the asymmetric supercapacitor (ASC) showed high energy density and excellent capacitance retention, making it suitable for wind energy storage and conversion.
Article
Chemistry, Multidisciplinary
Chuan Jing, Jinyu Ma, Qing Sun, Yanhong Li, Xiao Tang, Faling Ling, Yongjie Wang, Wendong Zhang, Xianju Zhou, Yuxin Zhang
Summary: This study prepared a series of MOF-based derivatives using suitable methods and evaluated their electrochemical performance. It was found that phosphating treatment can enhance the material's electrical conductivity, while the layered structure facilitates the intercalation/deintercalation of electrolyte ions, and oxidation inhibits the release of electrochemical performance. Therefore, the enhancement effect in terms of electrochemical performance is ranked as follows: phosphorization > layer structure > oxidation. This study provides reliable criteria for the design and screening of advanced electrode materials.
Article
Chemistry, Inorganic & Nuclear
Zhongmin Cao, Xiantao Wei, Xianju Zhou, Li Li, Yonghu Chen, Yongjie Wang, Guangxin Xie, Min Yin
Summary: This paper introduces a thermal imaging material with high temperature sensitivity and temporal resolution improved by a time resolving technique. The material shows great potential for real-time thermal imaging applications.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Guotao Xiang, Zhen Liu, Zhiyu Yang, Yongjie Wang, Lu Yao, Sha Jiang, Xianju Zhou, Li Li, Xiaojun Wang, Jiahua Zhang
Summary: An extremely strong green upconversion luminescence is achieved in BaWO4:Yb3+/Er3+ phosphor through local environment engineering by Ca2+ doping. The green upconversion intensity of Ca2+ doped BaWO4:Yb3+/Er3+ is 6.5 and 2.3 times stronger than that of BaWO4:Yb3+/Er3+ and CaWO4:Yb3+/Er3+, respectively. The BaWO4:Yb3+/Er3+/Ca2+ exhibits excellent temperature sensing performance and outperforms the majority of the same type optical thermometers.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Faling Ling, Yi Ling, Xiaoqing Liu, Li Li, Xianju Zhou, Xiao Tang, Chuan Jing, Yongjie Wang, Sha Jiang, Yi Lu
Summary: Two-dimensional transition metal dichalcogenides (TMDs) hold great potential in logic circuits and optoelectronic devices due to their unique structures and excellent semiconductor properties. However, their ultra-thin structures inevitably undergo out-of-plane deformation during practical applications, which significantly affects their electronic structures. Understanding the effects of out-of-plane deformation in 2D TMDs is critical for optimizing their applications in different fields.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Zhiting Song, Hongming Hu, Kai Shu, Tao Liu, Xiao Tang, Xianju Zhou, Yanhong Li, Yunhuai Zhang
Summary: This article reports the first discovery of Fe2O3 microspheres with a unique structure, which exhibit excellent cycling stability as a negative electrode for supercapacitors. Furthermore, a high areal specific capacitance of 1465.26 mF cm(-2) was achieved in sulfur-doped Fe2O3. An assembled asymmetric supercapacitor demonstrates its potential for practical applications.
CHEMICAL COMMUNICATIONS
(2023)
