Article
Materials Science, Multidisciplinary
Joshua Ferrigno, Saqeeb Adnan, Marat Khafizov
Summary: As the burn-up of nuclear fuel increases, its thermal conductivity decreases due to the accumulation of defects, resulting in a rise in the centerline temperature of the fuel rod. Fuel performance codes based on established physical principles are limited in their predictive capabilities. Efforts are being made to develop predictive fuel performance codes and analyze the impact of point defects on thermal conductivity. Neglecting point defect concentration can lead to underestimation of the centerline temperature and potentially affect fission gas behavior.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Zahir Muhammad, Yan Wang, Yue Zhang, Pierre Vallobra, Shouzhong Peng, Songyan Yu, Ziyu Lv, Houyi Cheng, Weisheng Zhao
Summary: This article reviews the development and fabrication processes of radiation-hardened electronic devices using different wide bandgap materials. It discusses the research on fundamental wide bandgap materials and the development of electronic devices used in harsh environments. Furthermore, it highlights the challenges and future prospects of WBG-based radiation-hardened electronic devices, emphasizing their importance in commercial applications in space stations and aircraft.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Johannes L. Teunissen, Thomas Jarrin, Nicolas Richard, Natalia E. Koval, Daniel Munoz Santiburcio, Jorge Kohanoff, Emilio Artacho, Fabrizio Cleri, Fabiana Da Pieve
Summary: Understanding the generation and evolution of defects induced by ion irradiation is vital for estimating the degradation of material properties. This study investigates collision cascades in GaAs and demonstrates the significant impact of electronic stopping on the number of defects. The results also contribute to discussions on estimating material degradation using nonionizing energy loss models.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Qinghui Shao, Joshua T. Jarrell, John M. Murphy, Clint D. Frye, Roger A. Henderson, Mark A. Stoyer, Lars F. Voss, Rebecca J. Nikolic
Summary: The study investigated the change of electrical performance of planar 4H-SiC, planar Si, and 3D Si ridge p-i-n diodes under high-flux and high-fluence electron irradiation. It was found that 4H-SiC diodes degraded by 45% in output power at a fluence of 1.3 x 10(18) cm(-2) with 100 keV electron irradiation, while Si diodes showed no decrease in performance at the highest fluence of 7 x 10(18) cm(-2). This indicates that Si is more radiation hard than 4H-SiC for Pm-147-based betavoltaics.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Review
Chemistry, Physical
Rosfayanti Rasmidi, Mivolil Duinong, Fuei Pien Chee
Summary: This paper provides a thorough review of the radiation effects on ZnO semiconductor devices, revealing changes in morphology, structure, optical and electrical parameters due to radiation exposure. The increase in ideality factor post-irradiation is attributed to recombination centers in the space charge region, indicating extrinsic recombination mechanisms involving lattice imperfections.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Physics, Applied
Alain Chartier, Paul Fossati, Laurent Van Brutzel, Orest Dorosh, Jacek Jagielski
Summary: The response of MgO periclase to irradiation was investigated using molecular dynamics simulations. The simulated lattice and volume swellings matched well with experimental measurements. Below 0.2 dpa, dislocation loops were formed from point defect clusters, consisting of magnesium and oxygen interstitials. Very small 1/2 110 loops in {001} planes acted as seeds for the growth of dislocation loops in {110}, {001}, and {111} planes. Above 0.2 dpa, lattice swelling decreased relative to the formation of less dense dislocation forests, while volume swelling increased rapidly due to significant voids of vacancies, up to 32 vacancies.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Instruments & Instrumentation
E. Fretwurst, R. Klanner, J. Schwandt, A. Vauth
Summary: In this study, silicon single crystals were irradiated and annealed to investigate the absorption coefficients and the presence of neutral divacancy (V02). Results showed a resonance peak for V02, and at an annealing temperature of 210℃, the intensity of V02 reduced by a factor of 2. The position and width of the fitted Breit-Wigner line shape remained unchanged with irradiation dose and annealing.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Chemistry, Physical
Adair Nicolson, Sean R. Kavanagh, Christopher N. Savory, Graeme W. Watson, David O. Scanlon
Summary: Copper-chalcogenides are prospective materials for thin film solar cells due to their desirable electronic properties and defect tolerance. In this study, we investigate the optoelectronic properties of Cu2SiSe3 and find that it exhibits a direct bandgap of 1.52 eV and a maximum efficiency of 30% for a 1.5 μm-thick film at the radiative limit. The formation energies of intrinsic defects are calculated, revealing that the dominant defect species is the p-type copper vacancy, which forms a perturbed host state. Overall, we propose further investigation of Cu2SiSe3 as a potential defect-tolerant photovoltaic absorber.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Multidisciplinary Sciences
Alex M. Ganose, David O. Scanlon, Aron Walsh, Robert L. Z. Hoye
Summary: The optoelectronic performance of wide-bandgap semiconductors is often inferior to that of their defect-tolerant small-bandgap counterparts. The authors highlight three main challenges that need to be addressed in order to mitigate the impact of defects in wide-bandgap semiconductors.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
C. D. Frye, Q. Shao, J. W. Murphy, S. E. Harrison, L. F. Voss, J. H. Edgar, R. J. Nikolic
Summary: After alpha irradiation, measurements show that fluences of 5 x 10(12) alpha/cm or greater caused a decrease in hole mobility and an increase in defect band conduction, indicating defect accumulation in B12P2.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Yuan Wang, Junyu Li, Yun Zhou, Zhao Gao, Wenjun Zhu, Lixin Liu
Summary: Investigating the carrier dynamics at the WS2/TiO2 heterojunction interface reveals the significant impact of interfacial defects on carrier trapping, separation, and recombination. The trapping of electrons shows an active effect, while the co-trapping of both electrons and holes exhibits a passive effect on charge carriers transition and separation. Understanding the role of interfacial defects in carrier dynamics provides guidance for the design of high-performance photoactive nanoheterojunctions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yu Cao, Chao Zhang, Yin Liu, Bing-Sheng Li, Zhi Gen Yu, Yong-Wei Zhang
Summary: The study investigates the properties of T-carbon in a radiation environment, revealing anisotropic displacement threshold energy and the tunability of electronic structures by irradiation, providing a theoretical basis for further research and application.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
O. Camara, A. H. Mir, G. Greaves, S. E. Donnelly, J. A. Hinks
Summary: Germanium nanowires rendered fully amorphous via xenon ion irradiation were annealed to induce crystallization within a transmission electron microscope. The presence of crystallites was observed to depend on the nanowire diameter, with thinner nanowires requiring higher annealing temperatures for crystallization. Oxygen atoms were proposed to hinder both the formation and growth of crystallites in the amorphous nanowires.
Article
Chemistry, Physical
Subila Kurukkal Balakrishnan, Priyakumari Chakkingal Parambil, Eran Edri
Summary: Metal trichalcogenides and chalcohalides are promising semiconducting materials with favorable optoelectronic properties. A synthetic strategy can transform trichalcogenides into chalcohalides. During the transformation, the crystal expands and unzips along the nanorod's z-axis, resulting in the formation of nanorods with a diameter of approximately 25% of the original crystals.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
K. V. Akshita, Dhandapani Dhanabalan, Rajendran Hariharan, Sridharan Moorthy Babu
Summary: Beta-Ga2O3 single crystals were successfully grown using OFZ technique with compressed dry air as growth atmosphere. The structural variations and optical properties of the irradiated wafers were analyzed using XRD, Raman spectroscopy, UV-Vis spectroscopy, and photoluminescence measurements. The study reveals the potential application of as-grown beta-Ga2O3 in harsh environments.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(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)