Article
Chemistry, Physical
Na-Na Zhang, Xiu-Xi Jiang, Ya-Ni Wang, Xiao-Ru Pan, Yuan-Yuan Zhang, Bing Liu, Yu-Guo Yang, Xu-Ping Wang
Summary: In this study, series of La3Ga5SiO14:Pr3+ phosphors were synthesized and characterized. The results showed that the Pr3+ doping did not significantly alter the crystal structure and phonon properties of La3Ga5SiO14 host. The phosphors exhibited strong absorption bands and emitted white light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Karan Kumar Gupta, Hanry Darsono, Achmad Chafidz, Chung-Hsin Lu
Summary: Uniform nanoparticles of Eu3+/Sm3+ co-doped CeO2 phosphors were synthesized by a hydrothermal method using EDTA as a chelating agent. The pH value of the precursor solution was adjusted to obtain uniform morphology, and the best morphology was achieved at pH 10. The optimized composition, Ce0.9Eu0.07Sm0.03O2-δ, showed high photoluminescence efficiency and the emission spectra exhibited temperature-dependent intensity ratio, making it suitable for luminescence-based thermometry applications.
Article
Materials Science, Ceramics
Haikun Liu, Libing Liao, Sergey M. Aksenov, Qingfeng Guo, Lefu Mei, Dina V. Deyneko
Summary: This study synthesized a series of novel phosphors with an apatite-type structure and studied their crystal structure, chemical stability, and photoluminescent properties. By investigating the tetrahedral substitutions of silicon and germanium in the structure, the research provides insights into the design of new phosphors using both experimental and theoretical approaches.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Robert Tomala, Krzysztof Korkus, Vitalii Boiko, Dariusz Hreniak, Pawel Gluchowski
Summary: Changing the Ga:Al ratio modulates the energy gap and modifies the spectroscopic properties of the phosphors. The stabilization of the Gd3Ga5O12 garnet structure by Al3+ ions widens the energy gap. Increasing Ga content leads to a decrease in the energy gap, affecting the interaction between oxygen ligands and luminescent ions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Junzhi Che, Yifang Lin, Congqi Niu, Bin Deng, Ruijin Yu, Xuemei Yao, Jiayun Kong, Liyang Lou, Ruihua Huang, He Wang
Summary: Novel layered niobate KCa2Nb3O10:Sm3+ orange red phosphors with potential application in white light-emitting diodes (w-LEDs) have been prepared successfully.
JOURNAL OF LUMINESCENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Hao-tian Zhu, Hai-rui Guo, Qi-jing Zheng, Chun-yan Guan, Li-ping Zhu, Hai-bin LI, Jin-yu Yang
Summary: Ho3+ and Yb3+ co-doped La7P3O18 up-conversion phosphors were prepared via high-temperature solid-state process. The samples showed a mixture of monoclinic structure La7P3O18 crystals and minor LaPO4 crystals according to XRD analysis. UV-Vis DRS results revealed that La7P3O18 crystal was an indirect semiconductor with an optical band gap of 4.10 eV. Upon excitation at 980 nm, the Ho3+ and Yb3+ co-doped La7P3O18 phosphors exhibited characteristic blue (486 nm), green (550 nm), and red (661 nm) luminescence peaks of Ho3+ ions. The 661 nm peak dominated the up-conversion luminescence spectra. The intensity of up-conversion luminescence initially increased and then decreased with the increase of Ho3+ and Yb3+ doping content. Concentration quenching may occur at Ho3+ and Yb3+ doping contents of 1 at.% and 10 at.%, respectively, through an electric quadrupole-electric quadrupole interaction process. The pumping power dependence of luminescence indicated a two-photon absorption process for the excitation of green and red emissions. The color coordinates of the Ho3+ and Yb3+ co-doped La7P3O18 crystals were located in the orange-red region.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Engineering, Electrical & Electronic
Peng Hu, Zhaoping Deng, Teshen Wang, Zepeng Li, Yanlin Ma
Summary: A series of Eu3+-doped NaBaBi2(PO4)(3) red phosphors were synthesized and investigated for their strong absorption capacity and suitability for near-ultraviolet-based white light-emitting diodes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Editorial Material
Optics
Cyrille Richard, Bruno Viana
Summary: This article reviews the mechanisms of persistent luminescence of trivalent lanthanides in wide bandgap fluoride or phosphate hosts after charging by X-rays, and envisions the potential applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Cailing Ji, Jie Tan, Quan Yuan
Summary: Persistent luminescence is an optical phenomenon in which solid phosphors release stored energy through defects, attracting significant attention in biomedical fields. By controlling synthesis and defect regulation, the optical performance of PLNPs can be optimized, leading to improved sensitivity in biological analysis.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Hongping Ma, Shixu Tao, Youjie Hua, Jun Zheng, Luyi Lou, Yiheng Ping, Peng Qiao
Summary: The developed (Ba1-x-yCax)AlSi5O2N7:yEu(2+) phosphors show great potential in LED applications, with enhanced crystallinity and luminescence intensity achieved through some amount of Ca2+ substitution, reaching the highest luminescence intensity when the Eu2+ concentration is at 0.06.
DALTON TRANSACTIONS
(2021)
Review
Optics
Ruby Priya, O. P. Pandey, Sanjay J. Dhoble
Summary: Gd2O3, an inorganic lanthanide oxide, stands out for its superparamagnetic behavior and dual luminescence properties, making it versatile for applications in various fields. Research focuses on structural analysis, synthesis, and spectroscopic investigations, as well as the material's applications in areas such as bio-sensors and optoelectronic devices.
OPTICS AND LASER TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Rajashree Panda, Mitrabhanu Behera, A. Arun Kumar, Dhananjay Joshi
Summary: Rare earth doped aluminate-based phosphors are preferred over sulfide-based phosphors. The unique luminescence features of lanthanide-based materials are being utilized for multidisciplinary research and inventive applications. The past years have seen an increase in research interest in aluminate-based phosphors, leading to improvements in their long-lasting phosphorescence and phosphorescence efficiencies. Combustion synthesis route is an efficient technique for preparing nano-phosphor due to its simplicity and cost-effectiveness.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Chemistry, Inorganic & Nuclear
Jiaoying Wang, Minghui Tai, Zhikui Yu, Shuo Kang, Dailai Jin, Longcheng Wang
Summary: A novel single-phase luminescent material, Ln@bio-MOF-1, was synthesized using a facile hydrothermal method. The structure and luminescence characteristics of the material were studied in detail. By controlling the molar amounts of Tb3+ and Eu3+, the chromaticity of the samples could be easily modulated. The synthesized material showed potential for use in WLED applications, with high quantum yield, white emission, and desirable color rendering index and correlated color temperature.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Ceramics
Hong Shao, Yang Zhang, Ning Li, Dan Li, Wensheng Yu, Guixia Liu, Xiangting Dong
Summary: A novel method combining electrospinning with twi-crucible fluorinating technology was used to fabricate one-dimensional LaF3:RE3+ (RE = Eu, Nd) nanostructured phosphors. Nanostructured LaF3:RE3+ (RE = Eu, Nd) phosphors were successfully synthesized through calcination of La2O3:RE3+ (RE = Eu, Nd) precursors utilizing NH4HF2 as a fluorine source. Nanofibrous LaF3:Eu3+ phosphors emitted a yellow color, while nanofibrous LaF3:Nd3+ phosphors displayed near-infrared optical performances.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hailong Yuan, Romain Genois, Estelle Glais, Fei Chen, Qiang Shen, Lianmeng Zhang, Eric Faulques, Luyuan Qi, Florian Massuyeau, Romain Gautier
Summary: This study demonstrates the efficient identification of experimental conditions for designing white phosphors using a high-throughput experimental approach and machine learning technology, overcoming challenges posed by energy transfer and concentration quenching phenomena.
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)