Article
Chemistry, Physical
Carlos E. Caballero-Guerecaa, M. R. Alfaro Cruza, E. Luevano-Hipolitoa, Leticia M. Torres-Martinez
Summary: Highly transparent ZnO films were successfully deposited on glass substrates using the sol-gel technique. The quality of the films was influenced by the concentration of zinc in the precursor solution and the annealing temperature. The films showed good crystallinity and preferential orientation, and exhibited high transmittance of over 90%.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
R. Vignesh, V. P. Brintha Mathy, G. Geetha, R. Sivakumar, C. Sanjeeviraja
Summary: The study reports on the thermochromism of m-BiVO4 films prepared by a modified citrate route of simple sol-gel spin coating method, showing a clear thermochromic behavior of the films, possibly related to structural changes.
Article
Engineering, Electrical & Electronic
O. F. Goktas, N. E. Koksal, O. Kaplan, A. Yildiz
Summary: The sol-gel method was used to fabricate Al-doped ZnO (AZO) thin films on p-Si substrates with smooth surfaces and highly oriented crystal structures. The analysis revealed that the AZO/Si heterojunctions exhibited nonideal diode behavior, with the 80 nm thick AZO layer demonstrating good rectifying properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Ahmed Ziti, Bouchaib Hartiti, Amine Belafhaili, Hicham Labrim, Salah Fadili, Abderraouf Ridah, Mounia Tahri, Philippe Thevenin
Summary: Semiconductor compounds Cu2MnSnS4 were synthesized using the sol-gel approach and deposited on glass substrates via dip-coating. The effect of various annealing temperatures on structural, compositional, morphological, optical, and electrical properties was investigated through XRD, Raman spectroscopy, EDS, SEM, UV-visible spectroscopy, and four-point probe method. The results showed improved crystallinity, optical transmittance, and decreased bandgap of CMnTS thin films with higher annealing temperatures, making them suitable for photovoltaic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Taejun Park, Kyunghwan Kim, Jeongsoo Hong
Summary: In this study, beta-Ga2O3 films were successfully fabricated on a quartz substrate using different drying temperatures and solutions of varying molar concentrations. The structural, optical, and electrical properties of the films were evaluated, showing that crystallinity and crystallite size increased with higher molar concentration and drying temperature. The films exhibited dense surface morphologies, with average transmittance above 8% in visible light, and a calculated optical bandgap energy of 4.9 eV, while the resistivity measured was 3.7 x 10(3) & OHM; cm.
Article
Multidisciplinary Sciences
Muna Khushaim, Sarah Alannri, Nessrin Kattan, Abdallah Jaber, Saleh Alamri
Summary: In this study, a stoichiometric CZTS absorber layer was fabricated using the sol-gel method and spray deposition technique without the sulfurization process. The effect of substrate temperature on the structural, morphological, and optical properties of the CZTS thin films was investigated, with an optimal band-gap value of 1.3 eV achieved at 350 degrees C annealing temperature. The variations in microstructure at different substrate temperatures were discussed for all prepared CZTS thin films.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Lena Meyniel, Cedric Boissiere, Natacha Krins, Sophie Carenco
Summary: In this study, thin films of lanthanide oxysulfide were developed that are compatible with flexible substrates and retain the robustness advantages of inorganic compounds. The films, made using a low-temperature dip coating method, maintained the optical quality of the materials. The thickness of the films could be adjusted in a wide range, and thermal treatment was optimized to remove organic ligands while preserving the integrity of the nanoparticles.
Article
Chemistry, Physical
Huihuang Xu, Hua Hao, Yanjiang Xie, Xin Wang, Jianlu Geng, Minghe Cao, Zhonghua Yao, Hanxing Liu
Summary: Lead-free BaZr0.25Ti0.75O3 films grown via a sol-gel method on Pt/Ti/SiO2/Si substrates exhibit good microstructure and energy storage performance, with moderate polarization and high breakdown strength, as well as excellent temperature stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Edgar R. Lopez-Mena, Sergio J. Jimenez-Sandoval, Omar Jimenez-Sandoval
Summary: Zinc oxide thin films doped with samarium were prepared by the Sol-gel technique in a simple and efficient way, resulting in nanocrystalline films with potential applications in optoelectronic devices.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
P. Vidhya, K. Shanmugasundaram, P. Thirunavukkarasu, T. Govindaraj, V. Balasubramani, B. Yogeswari, M. Karuppusamy
Summary: In this study, p-PbS/n-Si photodiodes were successfully fabricated using the jet nebulizer spray pyrolysis technique. The effect of substrate temperature on the properties of PbS thin films was investigated. X-ray Diffraction (XRD) confirmed the crystal structure of the films, while Field Emission Transmission Microscopy (FESEM) revealed changes in morphology with increasing temperature. The UV-Vis absorption spectrum showed an increase in bandgap with deposition temperature. The fabricated p-PbS/n-Si diode exhibited excellent rectification and photovoltaic properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Khedidja Chehhat, Abla Mecif, Abedel Hakim Mahdjoub, Roshan Nazir, Manzoor Ahmad Pandit, Faiza Salhi, Abdelouahab Noua
Summary: In this study, high-quality ZnO thin films with different loadings of cobalt (Co) were prepared on porous ceramics substrates using a sol-gel dip-coating scheme. The impact of cobalt on the crystal phase, surface morphology, optical and chemical properties of the films was investigated. The results showed that the addition of cobalt led to a decrease in grain size and a reduction in band gap values of the films, resulting in improved performance in the removal of Orange II dye under UV radiation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Angel de Jesus Morales-Ramirez, Margarita Garcia-Hernandez, Maria Luz Carrera-Jota, Paulina Garnica-Chavez, Brenely Gonzalez-Penguelly, Aristeo Garrido-Hernandez
Summary: Lu2Si2O7:Eu3+ thin films were prepared using sol-gel methods and dip coating, and exhibited a monoclinic structure with preferential orientation along a specific direction after heat treatment. The films showed strong emission from Eu3+ ions, with the optical yield and decay time increasing with the SiO2 content.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
J. A. Berumen-Torres, J. G. Quinones-Galvan, H. Duran-Munoz, C. H. Guzman, G. Torres-Delgado, J. J. Ortega-Sigala, J. J. Araiza-Ibarra, R. Castanedo-Perez
Summary: The addition of tin can reduce the resistivity of zinc oxide films, with decreased grain size as tin content increases. Further improvement in film properties can be achieved with a thermal treatment in vacuum.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
Cheng-You Li, Tsung-Hsien Hsu, Cheng-Liang Huang
Summary: Amorphous Ce2Ti2O7 (CTO) thin films were prepared on an ITO/glass substrate using the sol-gel method, and the effects of various factors on the resistance-switching characteristics of the device were studied. It was observed that diffusion of Al and self-formed AlOx at the Al/CTO interface enhance the performance of the device. By inserting an AlOx layer at the CTO/ITO interface, the RS properties of the device can be optimized, making it a promising candidate for RRAM applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Boying Wang, Hao Wang, Jiantao Wang, Chaolong Li, Feng Wang, Chunli Diao, Haiwu Zheng
Summary: In this study, lead-free 0.8STO-0.2BFO thin films with coexisting amorphous and nanocrystalline structure were prepared by a sol-gel method. By adjusting the heat-treatment temperature to form polar-nano regions, the energy storage density of the films was increased. The optimized 0.8STO-0.2BFO film exhibited excellent energy storage properties with high discharge energy storage density, temperature and frequency stability, as well as fatigue endurance.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)