Article
Chemistry, Physical
Yixin Li, Qi Wei, Hang Chen, Yuhua Wang
Summary: In this work, a novel garnet-based Eu3+-doped Ca2GdHf2Al3O12 phosphor was synthesized and its performance was studied, showing good anti-degradation properties, suitable for various industrial applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Kasturi Singh, Marikumar Rajendran, Rachna Devi, Sivakumar Vaidyanathan
Summary: Narrow-band red-emitters play a key role in addressing issues with white LED technology. Newly synthesized Li3BaSrLa3(MoO4)(8):Eu3+ phosphors exhibit strong emission performance and stability for warm white LED applications. Furthermore, these phosphors maintain high emission intensity even under high temperature conditions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Mogahid H. M. Abdelrehman, Robin E. Kroon, Abdelrhman Yousif, Hassan A. A. Seed Ahmed, Hendrik C. Swart
Summary: The structural and optical properties of Yb3+ and Er3+ co-doped Gd2O3:Bi3+ phosphor were studied. The addition of Yb3+ ions increased the optical bandgap of Gd2O3 and enhanced the near-infrared emission. The emission intensities of Yb3+ and Er3+ ions were significantly enhanced after Bi3+ doping. The results suggest that these phosphors have the potential to improve photovoltaic conversion efficiency through spectral modification and utilizing the down-conversion and upconversion processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Aziza H. Qaisi, U. H. Kaynar, M. Ayvacikli, J. Garcia-Guinea, Y. Alajlani, M. Topaksu, N. Can
Summary: This study reports the luminescent properties of undoped and Dy3+ doped borate through CL and PL under electron beam and laser excitation. The concentration quenching phenomenon at 1 mol% doping concentration is discussed.
APPLIED RADIATION AND ISOTOPES
(2022)
Article
Chemistry, Physical
Mengmeng Cao, Yunpeng Liu, Mengmeng Zhu, Jinfeng Xia, Tongtong Xuan, Danyu Jiang, Guohong Zhou, Huili Li
Summary: A novel green/red dual-emission carbon dots-based phosphor (GRCDs phosphor) was successfully prepared using calcium hydroxide as matrix material, showing outstanding thermal and water stability. Hydroxyl groups play a crucial role in the red emission of the GRCDs phosphor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Mustafa Ilhan, Lutfiye Feray Guleryuz
Summary: The effect of sintering temperature on the structure and spectroscopic properties of 2.5 mol% Sm3+ doped BaTa2O6 samples was investigated. It was found that the sintering temperature influenced the phase transformation, grain size, and emission behavior of the samples.
Article
Chemistry, Inorganic & Nuclear
Runtian Kang, Hang Chen, Ruijie Ji, Haoyang Wang, Takatoshi Seto, Yuhua Wang
Summary: The study focused on a new type of Ce3+/Mn2+ doped CYHAO garnet phosphor which can be efficiently excited by n-UV light, exhibiting a wide excitation band, tunable color emission, and high efficiency for producing white light LEDs.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Shota Takemura, Yukinori Koyama, Takayuki Nakanishi, Shiro Funahashi, Naoto Hirosaki, Hidekazu Ikeno, Takashi Takeda
Summary: A new narrow-band emitting phosphor Na2Cs2Sr(B9O15)(2):Eu2+ was discovered using the local structure similarity with a known narrow-band emitting phosphor. Na2Cs2Sr(B9O15)(2):Eu2+ showed violet luminescence peaked at 417 nm with a narrow full-width at half-maximum of 26 nm (1497 cm(-1)).
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Shota Takemura, Yukinori Koyama, Takayuki Nakanishi, Shiro Funahashi, Naoto Hirosaki, Hidekazu Ikeno, Takashi Takeda
Summary: In this study, a new narrow-band emitting phosphor Na2Cs2Sr(B9O15)2:Eu2+ was discovered by analyzing the local structure similarity with a known narrow-band emitting phosphor. The synthesized phosphor exhibited a narrow peak emission at 417 nm and showed violet luminescence.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jedrzej Winczewski, Manuel Herrera, Han Gardeniers, Arturo Susarrey-Arce
Summary: This paper presents the additive manufacturing of three-dimensional structured phosphors emitting red, green, blue, and white, which allows advanced applications in optics and photonics. This development is a step forward in realizing additive color synthesis within complex architectures relevant to integrated optics or light-emitting sources.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yigong Chen, Zebin Li, Yixin Li, Takatoshi Seto, Yuhua Wang
Summary: Efficient and stable phosphors are crucial for the development of field emission displays (FEDs). SrLiAl3N4:Eu2+ phosphor, synthesized using a simple preparation method at low temperature, exhibits narrow band red emission and excellent CL performance, making it a potential candidate for full color FEDs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Timofei Eremin, Valentina Eremina, Yuri Svirko, Petr Obraztsov
Summary: Covalent functionalization of single-walled carbon nanotubes (SWCNTs) can greatly enhance their photoluminescent (PL) brightness, making them suitable for infrared light emitters.
Article
Materials Science, Multidisciplinary
E. H. H. Hasabeldaim, Samvit G. Menon, H. C. Swart, R. E. Kroon
Summary: The surface composition and stability of ZnGa2O4:Mn2+ green phosphor were evaluated using Auger electron spectroscopy in vacuum and oxygen environment. Changes in element concentrations and surface chemistry were observed under different irradiation conditions in this study.
Article
Chemistry, Multidisciplinary
Zebin Li, Takatoshi Seto, Yuhua Wang
Summary: To enhance the thermal stability and luminescence performance of red-emitting phosphor, co-doping with rare earth ions is employed. Although co-doping reduces the luminescence intensity, it significantly improves the thermal stability. The nitride phosphor has potential applications in field emission displays due to its high saturation current.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yui Konno, Rina Morooka, Tatsunari Morishita, Pei Zhao, Naoto Miyasaka, Kazuki Ono, Akira Noda, Daiki Uchida, Ren Iwasaki, Michio Yamada, Masahiro Ehara, Yutaka Maeda
Summary: Functionalization of single-walled carbon nanotubes (SWNTs) using a series of bromoalkanes and dibromoalkanes with different tether lengths was investigated. Longer tether lengths (six or more) resulted in SWNT adducts with two new photoluminescence (PL) peaks, while shorter tether lengths (3-5) produced single peaks. The formation mechanism of functionalized adducts was found to be influenced by the tether length, with shorter tethers tending to produce kinetic products.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
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)