Article
Materials Science, Ceramics
Jiangkun Cao, Aaron Reupert, Yicong Ding, Lothar Wondraczek
Summary: The study discusses a synthesis procedure for a glass-crystal composite material comprising of bismuth-doped zirconia within an aluminoborate glass phase, offering tunable and broad photoemission characteristics while maintaining advantageous thermal behavior when encapsulated within the glass phase.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Roman Yatskiv, Jan Grym, Sarka Kucerova, Stanislav Tiagulskyi, Ondrej Cernohorsky, Nikola Basinova, Jozef Vesely
Summary: This paper examines the effects of annealing atmosphere and temperature on defect-related emission in ZnO thin films and bulk substrates. The results demonstrate that post-annealing treatment is a powerful tool for modifying defects in ZnO and accurately tailoring emission wavelength. This research has significant implications in optoelectronics, particularly in LED, display, and biological labeling technologies.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Thi Ngoc Lam Tran, Cristina Armellini, Stefano Varas, Alessandro Carpentiero, Andrea Chiappini, Pawel Gluchowski, Erica Iacob, Gloria Ischia, Francesco Scotognella, Monica Bollani, Anna Lukowiak, Giancarlo C. Righini, Maurizio Ferrari, Alessandro Chiasera
Summary: This study focused on improving the luminescence efficiency of rare-earth ions by fabricating SiO2-SnO2:Er3+ glass-ceramic planar waveguides containing SnO2 nanocrystals. The SnO2 nanocrystals were shown to act as efficient sensitizers for Er3+ luminescence. By reducing the impact of non-radiative relaxation processes, the incorporation of Er3+ ions in SnO2 nanocrystals led to higher luminescence efficiency.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
R. Sanchez-Alarcon, J. Noguera-Gomez, V. S. Chirvony, H. Pashaei Adl, Pablo P. Boix, G. Alarcon-Flores, J. P. Martinez-Pastor, R. Abargues
Summary: CsPbI3 perovskite nanocrystals suffer from phase stability issues, which can be overcome by synthesizing mixed halide CsPbBr3-xIx NCs. Spray coating for solid-state anion exchange in CsPbBr3 NCs thin films is a novel technology to manufacture high optical quality and high PLQY CsPbBr3-xIx NC thin films.
Article
Materials Science, Ceramics
Thomas Schwab, Hasan Razouq, Korbinian Aicher, Gregor A. Zickler, Oliver Diwald
Summary: Ion exsolution is crucial for engineering intergranular regions in ceramic microstructures. BaO admixtures trapped inside MgO grains undergo annealing-induced exsolution to generate photoluminescent surface and interface structures. The effects of BaO admixtures on grain coarsening and powder densification were compared using spectroscopy measurements and in-depth structure characterization.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
WenJun Huang, JiaHui Lei, YiHang Chen, JunYu Chen, Yi Li, LiPing Chen, Hai Guo
Summary: Dy3+-doped YPO4 glass ceramic samples were synthesized through melt-quenching and heat-treatment methods. Structural analysis of YPO4 GC was performed using differential scanning calorimetry, X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. The optimized sample was GC565 (heat-treated at 565 degrees C for 2 h). The fluorescence intensity ratio (FIR) of Dy3+ emissions from I-4(15/2) and F-4(9/2) to H-6(15/2) under 350 nm excitation was used for temperature sensing, with a maximum relative sensitivity of 2.03 %K-1 at 303 K. Our work demonstrates the potential application of Dy3+-doped YPO4 GC in optical temperature sensing.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Qiqi Zhao, Feitong Chen, Changqian Li, Chenyu Shang, Qi Huang, Bin Yan, Huiling Zhu, Kunhua Wang, Weiwei Zhang, Tianliang Zhou, Jianxu Ding
Summary: Perovskite nanomaterials are regarded as the next-generation light emitters due to their simple synthesis, low-cost, large-area, and wide color gamut. While the external quantum efficiencies of green, red, and near-infrared perovskite light-emitting diodes (PeLEDs) have exceeded 20%, blue PeLEDs still lag behind, limiting their applications in full-color displays. This review focuses on the advances in blue perovskite nanocrystals (NCs) and their applications in blue PeLEDs, highlighting promising blue perovskite emitters and strategies for efficient blue PeLEDs.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Ceramics
Wanli Li, Yifan Sun, Zhaoyang Chen, Pengjun Zhao, Junhua Wang, Yan Zhao, Yanwei Fan, Chengfa He
Summary: In this study, Sm3+ doped glass-ceramic with crystallized BaZn2(PO4)(2) was prepared and its structural, optical, and stimulated luminescence dosimetry properties were investigated. The results showed that the OSL intensity reached a maximum at a Sm3+ concentration of 0.25 mol%, after which a concentration quenching effect was observed. The material also exhibited thermoluminescence and had a linear radiation dose response range of 0.2-500 Gy.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Chadrasekhar Loka, Kee-Sun Lee
Summary: Ag-Ag2O-ZnO nanocomposite with localized surface plasmon resonance (LSPR) and p-n heterojunction structure was synthesized by hydrothermal process, which effectively improved the photocatalytic efficiency and suppressed the recombination of photogenerated electron-hole pairs. The nanocomposite exhibited excellent photocatalytic activity and achieved high degradation efficiency for different dyes under visible-light irradiation.
Article
Chemistry, Inorganic & Nuclear
D. Q. Trung, N. V. Quang, M. T. Tran, N. V. Du, N. Tu, N. D. Hung, Dao Xuan Viet, D. D. Anh, P. T. Huy
Summary: A novel broad-band-emitting phosphor based on Al-doped ZnO was reported, showing full spectrum emission with promising potential for UV-pump warm white light-emitting diodes.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Aneliya Yordanova, Margarita Milanova, Reni Iordanova, Margit Fabian, Lyubomir Aleksandrov, Petia Petrova
Summary: This study investigates the influence of Bi2O3 and WO3 on the structure and optical properties of Eu3+ doped zinc borate glasses. It reveals that the synthesized glasses have red emission at 612 nm, indicating their potential as a substitute for red phosphor with high color purity.
Article
Physics, Applied
Bhaskar Das, Syed Minhaz Hossain, Anupam Nandi, Debabrata Samanta, Ashit Kumar Pramanick, Sergio Omar Martinez Chapa, Mallar Ray
Summary: In addition to searching for new materials for next-generation solar cells, improving the efficiency of existing crystalline silicon-based photovoltaic modules is also crucial. This study used a silicon nanocrystal dispersed gel-glass as a luminescent down shifting material to enhance the efficiency of conventional solar cell modules.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Liting Qiu, Peng Wang, Jiashan Mao, Zhicheng Liao, Fengfeng Chi, Yonghu Chen, Xiantao Wei, Min Yin
Summary: With the increasing demand for non-contact temperature sensing, the development of an excellent optical thermometer has become more compelling. In this study, a Cr3+-doped InTaO4 phosphor was prepared and investigated for its temperature-dependent fluorescence intensity and fluorescence lifetime, achieving high-sensitivity temperature sensing in two different modes. Additionally, a time-resolved technique was also presented, which showed improved temperature sensitivity and resolution. The results demonstrate the promising potential of InTaO4:Cr3+ phosphor in multi-mode high-sensitivity optical thermometry and temperature imaging.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Qin Wang, Yao Tong, Meiting Yang, Hangtao Ye, Xiaojuan Liang, Xin Wang, Weidong Xiang
Summary: Saving energy and reducing consumption are effective methods to alleviate energy shortages. In this study, self-crystallized perovskite materials with high photoluminescence quantum yield and adjustable full width at half maximum were prepared using the traditional melt-quenching method. These materials serve as downconverters for achieving high-brightness red backlight that meets wide color standards, providing an effective approach for fabricating wide color gamut backlights.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qianyi Chen, Minbo Wu, Puxian Xiong, Yajing Zhao, Shuhang Tian, Yao Xiao, Yongsheng Sun, Dongdan Chen, Shanhui Xu, Zhongmin Yang
Summary: We demonstrate the fabrication of a NaLa(WO4)(2): Dy3+ glass-ceramic fiber for the first time, with emission wavelength around 575 nm and a wide full-width half maximum (FWHM) of 18 to 22 nm. The luminescence intensity of the glass-ceramic fiber is five times higher than the precursor fiber after thermal treatment, while maintaining its broadband emission. This work is expected to provide a high potential glass-ceramic fiber for tunable yellow laser.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)