Article
Optics
Manohar Singh, Anit K. Ambedkar, Shrestha Tyagi, Virendra Kumar, Prashant Yadav, Ashwani Kumar, Yogendra K. Gautam, Beer Pal Singh
Summary: In this study, pure ZnO and Cu-doped ZnO thin films were deposited on a glass substrate using reactive co-sputtering. The structural, morphological, and optical properties of the thin films were characterized. The results showed that Cu doping modified the crystal structure, surface morphology, and optical properties of ZnO thin films. These findings are important for the research and applications of Cu-doped ZnO thin films.
Article
Materials Science, Ceramics
Huan Wang, Yuxin Ma, Wen Yang, Dejun Wang, Chunliang Wang, Duanting Yan, Runru Liu
Summary: Doping and co-doping are effective strategies for enhancing ion conductivity in oxygen ion conductors. This study investigates the structural origin and conduction mechanism of bulk conduction upon cation doping using photoluminescence properties. The results suggest that the locations of oxygen vacancies are influenced by the doping cations. Additionally, the study highlights the importance of cation electronegativity in ion conduction and proposes a strategy for studying the relationship between doping and local structures using photoluminescence.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
D. Manno, L. Torrisi, L. Silipigni, A. Buccolieri, M. Cutroneo, A. Torrisi, L. Calcagnile, A. Serra
Summary: Ion irradiation reduces oxidized graphene and causes morphological and structural changes in the individual sheets. The study analyzes the changes in reduced graphene oxide (rGO) through transmission electron microscopy and Raman spectroscopy. The analysis reveals deformations in the sheets and the presence of different orientations within the electron beam. The results suggest that ion dose affects the deformation and morphology of the sheets.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Asha Panghal, Yogendra Kumar, P. K. Kulriya, Parasharam M. Shirage, N. L. Singh
Summary: This study demonstrates that the structural properties of La2Zr2O7 are significantly impacted by the irradiation temperature and ion fluence during ion irradiation. At lower temperatures, the degradation of crystallinity becomes more pronounced with an increase in ion fluence.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Amaresh Das, Durga Basak
Summary: This study presents a comprehensive investigation on the interplay between nitrogen and various defects in ZnO nanorods, revealing that nitrogen implantation induces structural damages and forms nitrogen-related defect complexes. Post-implantation annealing in O2 and Ar environments plays a key role in stabilizing nitrogen dopants in ZnO nanorods.
APPLIED SURFACE SCIENCE
(2021)
Article
Optics
Eugene Chubenko, Mohsin Wahioh Alhamd, Vitaly Bondarenko
Summary: This study discusses the optical properties of ZnO films doped with Ni and Co transition metals that were hydrothermally deposited on a silicon substrate. The films have been found to have a compact crystalline structure and can be considered as nanostructured polycrystalline ZnO films doped with Ni and Co. Under optical and electronic excitation, the films exhibit luminescence in the near-band-edge ultraviolet and visible range.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Damjan Ivekovic, Sunil Kumar, Andrea Gajovic, Tihana Cizmar, Marko Karlusic
Summary: High-energy heavy ion irradiation is an effective method for nanostructuring 2D materials by introducing controlled defects. It is particularly attractive for mass production of graphene nanomembranes, as nanopore size and density can be easily adjusted through ion irradiation parameters. Understanding the mechanisms of nanopore formation due to high-energy heavy ion impact is crucial. In this study, Raman spectroscopy was used to examine the response of bilayer and trilayer graphene to irradiation. Analysis of spectra obtained from various ion beams revealed that damage production efficiency is strongly correlated with nuclear energy loss and the contribution of electronic energy loss to damage formation is minimal.
Article
Physics, Multidisciplinary
D. O. Demchenko, M. Vorobiov, O. Andrieiev, T. H. Myers, M. A. Reshchikov
Summary: By using photoluminescence measurements and hybrid density functional theory, researchers have found a shallow effective mass state for the Be-Ga acceptor in GaN, with a level at 113 +/- 5 meV above the valence band. Calculations indicate that the BeGa acceptor has a bright shallow state responsible for the 3.38 eV PL band, as well as a dark, strongly localized small polaronic state with a lower hole capture efficiency.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
N. M. Yitzhak, O. Girshevitz, A. Haran, A. Butenko, M. Kaveh, I. Shlimak
Summary: Raman spectra of monolayer graphene samples were measured, and it was found that the positions of Raman lines are redshifted in free-standing samples, which is caused by irradiation with protons or helium ions. This redshift is attributed to an electronic mechanism for changing the graphene structure, depending on the charge and velocity of the incident ions.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kun Zhang, Zongwei Xu, Junlei Zhao, Hong Wang, Jianmin Hao, Shengnan Zhang, Hongjuan Cheng, Bing Dong
Summary: Ion doping technology with precise control of doping concentration and configuration can optimize the performance of beta-phase gallium oxide (beta-Ga2O3) high-power electronic and optoelectronic devices. By separately doping shallow-donor Si and deep-acceptor Mg impurities in beta-Ga2O3 using the EFG method, the study found that the Si-doped sample has higher stability at different temperatures, while the local atomic configurations of Mg impurities can be more easily/significantly affected by temperature. The research provides valuable insights for the application of ion-doped beta-Ga2O3 optoelectronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Ke Li, Egor Kashkarov, Hailiang Ma, Ping Fan, Qiaoli Zhang, Peng Zhang, Xingzhong Cao, Jilong Zhang, Zhaohui Wu, Andrey Lider, Nahum Travitzky, Daqing Yuan
Summary: The influence of ion irradiation at elevated temperatures on novel preceramic paper-derived SiCf/SiC laminated composites fabricated by spark plasma sintering was investigated. The results showed that irradiation induced amorphization in the damaged area and recrystallization of amorphous regions occurred with increasing dose. No evidence of cavities was found in the irradiated SiCf/SiC composites up to 100 dpa.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
P. T. Kolhe, A. B. Thorat, A. B. Phatangare, P. R. Jadhav, S. N. Dalvi, S. D. Dhole, S. S. Dahiwale
Summary: The synthesis, structure, and morphology of molybdenum disulfide (MoS2) thin films were studied using XRD and SEM, and the tensile strain induced by ion irradiation was found to be higher compared to gamma irradiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Kathrin Kroth, Philip Klement, Limei Chen, Sangam Chatterjee, Peter J. Klar
Summary: Tip-induced optical spectroscopy can overcome the resolution limits of conventional optical techniques for studying sub-nm sized objects. However, there are restrictions for spatially extended samples due to perturbations caused by the tip. Additionally, the optical response is influenced by the type of tip and substrate used.
Article
Materials Science, Multidisciplinary
D. Ivekovic, P. Dubcek, A. Gajovic, T. Cizmar, B. Radatovic, A. L. Brkic, M. Kralj, M. Karlusic
Summary: In this study, we used atomic force microscopy, scanning tunnelling microscopy, and Raman spectroscopy to investigate the response of graphite to high-energy heavy ions irradiation. Ion tracks were observed on the surface after grazing incidence ion irradiation by 23 MeV I, indicating the susceptibility of the graphite surface to this type of irradiation. No tracks were found within the bulk after normal incidence irradiation. However, we demonstrate that electronic energy loss contributes to defect recovery, thus enhancing the stability of graphite below the surface to high-energy heavy ion irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Spectroscopy
Dieter Fischer, Dejan Zagorac, J. Christian Schoen
Summary: Yellow-gray ZnO films are synthesized at room temperature by femtosecond pulsed laser deposition. In situ Raman investigations reveal the existence of superoxide ions, O-2(-), in these films, which are responsible for the yellow color.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
Anuradha Bhogra, Anha Masarrat, Dilruba Hasina, Ramcharan Meena, Ashish Kumar, Tapobrata Som, Chung-Li Dong, Chi-Liang Chen, Asokan Kandasami
Summary: This study investigates the effect of 1 MeV Ar ion irradiation on pulsed laser deposited TiO2/SrTiO3 bilayer thin films, revealing that irradiation reduces crystallinity and enhances electrical conductivity in films on Si substrates compared to those on SrTiO3 substrates. X-ray absorption spectra show a reduction in Ti ion valence and the presence of oxygen vacancies, indicating that Ar ion irradiation improves electrical and thermoelectric properties in oxide heterostructures due to the generation of oxygen vacancies.
Article
Materials Science, Multidisciplinary
Kriti, Puneet Kaur, Simranpreet Kaur, Deepawali Arora, Surbhi Chalotra, Pargam Vashishtha, Harjeet Kaur, Govind Gupta, Asokan Kandasami, D. P. Singh
Summary: The WO3:Sm compounds synthesized via solid-state reaction method were characterized for their structural, optical, and magnetic properties. The results showed monoclinic phase structure, densely packed particles, band gap broadening, violet-blue emissions, and room-temperature ferromagnetism, making them suitable for white LEDs.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Chandra Prakash Verma, K. Asokan, Pawan K. Kanaujia, Mohammad Adnan, D. Kanjilal, G. Vijaya Prakash
Summary: In this study, low-energy Ar+ ion beam irradiation on PSi microcavities resulted in a red-shift in the reflectance spectra of resonant cavities and modification of crystalline silicon structure. Experimental findings were in agreement with simulations, providing evidence for tuning optical properties and photon confinement within the microcavity.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Panneerselvam Kurinjinathan, Pandiyaraj Kanagavalli, Pei-Rong Li, Murugan Veerapandian, Han-Wei Chang, Ping-Hung Yeh, K. Asokan, K. Thanigai Arul, Chung-Li Dong
Summary: Tin (Sn2+) ions incorporated hydroxyapatite (HAp) nanospheres were prepared by wet chemical, leading to enhanced specific capacitance and excellent cyclic stability for electrochemical energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Razia Nongjai, Rubiya Samad, V. R. Singh, V. K. Verma, Asokan Kandasami
Summary: The study investigated the effect of N ion implantation on Fe3O4 thin films, showing improvements in magnetic properties and electronic structure after ion implantation. The increase in carrier concentration and decrease in resistivity were also observed, contributing to the enhanced magnetic properties of the implanted thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Keval Gadani, K. N. Rathod, Davit Dhruv, V. G. Shrimali, Bhargav Rajyaguru, Joyce Joseph, A. D. Joshi, D. D. Pandya, K. Asokan, P. S. Solanki, N. A. Shah
Summary: This study investigates the structural, microstructural, resistive switching characteristics, and charge conduction mechanisms of Y0.95Ca0.05MnO3 (YCMO) manganite films grown on Nb:SrTiO3 substrates irradiated with 100 MeV O(+7) swift heavy ions. The observed resistive switching behavior is attributed to changes in the depletion region, movement of oxygen vacancies, and tunneling processes at the interface barriers between YCMO and SNTO. The films exhibit endurance and retention behaviors, indicating their reproducibility, dynamic stability, and reliability as non-volatile memory devices.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Instruments & Instrumentation
A. A. Deshmukh, A. P. Srivastava, J. P. Singh, Manish Kumar, K. H. Chae, K. Asokan, U. A. Palikundwar
Summary: The study found that with increasing silicon concentration, the Co-Si coordination number increases, forming a locally ordered structure at the atomic scale and promoting the stability of the glassy phase. The alloy composition Co69Fe3Si18B10 has a good glass-forming ability with the highest silicon coordination number. There is a linear correlation between the silicon coordination number and GFA parameter, emphasizing the crucial role coordination number plays in the glass-forming ability of the glassy alloys.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Materials Science, Multidisciplinary
Saptarshi Pal, Puspendu Barik, Manik Pradhan
Summary: A simple and surfactant-free synthesis technique for Au nanoparticles embedded in ZnO matrix is reported, showing a dramatic enhancement of deep level emission compared to pristine ZnO nanoparticles. The findings suggest the feasibility of enhancing green light emission with surface plasmons, potentially leading to applications in integrated circuits, visible light emitting diodes, sensors, and display systems.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Apu Mondal, S. Pal, Suvadip Masanta, Sourabh Pal, Rajib Saha, Pravin Kumar, A. Singha, S. Chattopadhyay, D. Jana, A. Sarkar
Summary: The study found that rapid thermal annealing helps to maintain nitrogen at lattice positions, while conventional furnace annealing promotes nitrogen outdiffusion, also explaining the mechanism of nitrogen enrichment in ZnO.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Spectroscopy
Puspendu Barik, Saptarshi Pal, Manik Pradhan
Summary: A cost-efficient Raman substrate composed of PVP coated gold nanoparticles layer on commercial aluminum foil was successfully fabricated via direct spraying of nanoparticle colloidal solution. The substrate showed a detection limit of 1 nM and a maximum intensity enhancement factor of -24 during SERS for Rhodamine 6G, without any post-treatment. The field enhancement due to reflection from the metallic mirror contributes to the signal enhancement, making it beneficial for routine clinical applications and trace chemical detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Ashish Kumar, Saurabh Singh, Ashutosh Patel, K. Asokan, D. Kanjilal
Summary: This study investigates the thermoelectric properties of n-type GaN semiconductor through experimental and computational tools, revealing that the Seebeck coefficient decreases with increasing carrier concentration, with electrons being the dominant carriers. The experimental results and theoretical calculations show good agreement in the temperature range of 260 to 625 K.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Vishnu Kumar, Anuradha Bhogra, Manju Bala, S. C. Haw, C. L. Chen, C. L. Dong, K. Asokan, S. Annapoorni
Summary: This study investigates the evolution of blue-green emission in N ion implanted STO thin films using XRD, PL, and XANES spectroscopic techniques. It reveals that N ion implantation leads to amorphization of STO films and induces intense blue-green emission due to oxygen vacancies and N bound states. The study also proposes a schematic diagram to explain the origin of PL emission and shows changes in the valency of Ti ions and local atomic structure of STO with an increase in N ion fluence.
Article
Quantum Science & Technology
Utkarsh Shashank, Rohit Medwal, Taiga Shibata, Razia Nongjai, Joseph Vimal Vas, Martial Duchamp, Kandasami Asokan, Rajdeep Singh Rawat, Hironori Asada, Surbhi Gupta, Yasuhiro Fukuma
Summary: Efficient charge-spin interconversion is crucial for understanding the functionalities of spin-orbit torque in energy-efficient and high-speed spintronic devices. A new spin Hall material, Pt(S), is reported in this study, demonstrating significantly higher conversion efficiency compared to pristine Pt, along with large spin Hall angle and viable electrical and spin Hall conductivity.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
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)