Article
Materials Science, Multidisciplinary
Sipei Zhang, Ying Xu, Wen Zhang, Peng Cao
Summary: Cu and Y co-doped TiO2 nanoparticles were prepared using an acid-catalytic sol-gel process, resulting in a single anatase phase with reduced crystallite size. SEM observations showed uniform nanospheres being synthesized under the proposed conditions. XPS results demonstrated the presence of Cu+ and Y3+ ions. The photoactivity of the co-doped TiO2 was improved due to effective separation of electron-hole pairs, increased formation of active radicals, and increased surface area.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Multidisciplinary
Ugur Caligulu, Nida Darcan, Haluk Kejanli
Summary: This study investigated the impact of Calcium (Ca) and Manganese (Mn) dopants on the optical and surface properties of Titanium dioxide (TiO2) nanomaterial. The results showed that the doping ratio of Mn affected the morphological properties of TiO2 and increased the optical band gap of the samples. The produced samples have potential applications in transparent conductive electrode applications, optoelectronic devices, and sensor production.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2021)
Article
Biochemistry & Molecular Biology
Fang Yang, Xingxing Yang, Kaimin Su, Jinpei Lin, Yun He, Qing Lin
Summary: La1-xRxFeO3 (R = Co, Al, Nd, Sm) materials were synthesized using the sol-gel method and analyzed by XRD, TG-DTA, and VSM. The magnetic properties of the samples were found to increase with proper doping of Co2+, Al3+, Nd3+, and Sm3+ ions. The grain size and magnetic loop area also showed significant changes with the increase in doping content. The findings suggest that doping can improve the magnetization and refine the particles, resulting in better magnetic performance.
Article
Materials Science, Ceramics
Charitha Thambiliyagodage, Shanitha Mirihana
Summary: This study successfully synthesized Fe and Cu co-doped TiO2 nanoparticles and investigated their photocatalytic activity. Doping with Fe and Cu can enhance the visible light sensitivity of TiO2, but increasing dopant concentration leads to a decrease in photocatalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Xiumei Tao, Lei Zhu, Xun Wang, Xueqi Chen, Xian Liu
Summary: In this study, Y-ZrO2-TiO2 photocatalyst was prepared by sol-gel method, and the effects of various factors on its photocatalytic performance were investigated. The results showed that the addition of Zr and Y elements improved the photocatalytic performance of TiO2.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Sanya Khursheed, Rida Tehreem, Muhammad Awais, Dilshad Hussain, Muhammad Imran Malik, Young Sun Mok, Ghayas Uddin Siddiqui
Summary: The purpose of this study was to investigate the effect of photocatalytic degradation using nitrogen and tungsten co-doped titania (TiO2) nanoparticles, which are cost-effective and environmentally friendly. The synthesized nanoparticles were analyzed using various techniques, including spectroscopy, microscopy, and spectrometry. The co-doping of metal and non-metal enhanced the photocatalytic properties of the TiO2 nanoparticles, particularly in the visible region. This resulted in improved absorption of visible light and reduced recombination of electron-hole pairs, leading to accelerated photodegradation. The bandgap of the titania nanoparticles was reduced after efficient doping, enabling the photodegradation of malachite green under visible light illumination. The results of photocatalytic degradation were confirmed using spectroscopy and high-performance liquid chromatography coupled with mass spectrometry.
Article
Chemistry, Multidisciplinary
Mengyuan Wang, Shizhuo Su, Xin Zhong, Derui Kong, Bo Li, Yujie Song, Chunman Jia, Yifan Chen
Summary: A novel redox-active organic-inorganic hybrid material based on tetrathiafulvalene derivatives and titanium dioxide has been synthesized, demonstrating remarkably enhanced photocatalytic performance. Characterizations of the hybrid reveal advantages such as stability and separation of photogenerated charges.
Article
Materials Science, Ceramics
Hamnesh Mahajan, Shammi Kumar, Anjori Sharma, Ibrahim Mohammed, Manisha Thakur, Amarjeet Kaur, A. K. Srivastava
Summary: Sol-gel methodology was used to produce Mn0.3Co0.2Zn0.5Fe2O4 ferrite nanoparticles at different sintering temperatures. XRD, FTIR, FESEM, EDX, VSM, and electrochemical studies were conducted to analyze the properties of the synthesized specimens. The results showed the formation of spinel structure, agglomerated grains, stoichiometry confirmation, enhanced saturation magnetization with higher sintering temperature, and higher specific capacitance for Mn0.3Co0.2Zn0.5Fe2O4 (1150 degrees C).
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Hamid Barkouch, Haad Bessbousse, Meryem Amar, Si Mohamed Bouzzine, Mohamed Hamidi, Moulay Abderrahim El Mhammedi, Ouafa Tahiri Alaoui
Summary: The sol-gel coprecipitation method is a convenient and affordable synthesis method for bismuth-doped TiO2 photocatalysts. Effective doping improves the photoactivity of the catalyst, enabling effective electron excitation under visible light. Different doping percentages of bismuth can modulate the photocatalytic response and provide engineered control over the semiconductor's bandgap energy. 5% doping provides the optimal balance of photocatalytic properties and effectiveness in treating the model organic pollutant indigo carmine (IC).
Review
Biochemistry & Molecular Biology
Yudong Wang, Shangjie Ge-Zhang, Pingxuan Mu, Xueqing Wang, Shaoyi Li, Lingling Qiao, Hongbo Mu
Summary: Wood has gained extensive attention in architecture, furniture, and other fields for its environmental friendliness and excellent mechanical properties. Inspired by the wetting model of lotus leaves, researchers have developed superhydrophobic coatings with strong mechanical properties and durability on modified wood surfaces. Various methods, such as sol-gel, etching, graft copolymerization, and layer-by-layer self-assembly, have been used to prepare superhydrophobic surfaces, which find application in biology, textiles, defense, and military industries. However, current methods for preparing superhydrophobic coatings on wood surfaces have limitations in reaction conditions and process control, resulting in low efficiency and insufficiently fine nanostructures. The sol-gel process offers a simple, cost-effective, and easily controlled method for large-scale industrial production of superhydrophobic coatings. This paper summarizes the research progress on wood superhydrophobic coatings, focusing on the sol-gel method with silicide as an example, and discusses different acid-base catalysis processes for preparing superhydrophobic coatings on wood surfaces. The latest developments in sol-gel-based superhydrophobic coatings at home and abroad are reviewed, and the future development of superhydrophobic surfaces is discussed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Naveen Kumar Panneer, Chandrakala Venkatraman, Neena Bachan, Jothi Jeyarani Wilson, Merlin Arnold Edwin, Antony Robinson Jesudasan, Merline Shyla Joseph
Summary: The manuscript describes the fabrication and characterization of an eco-friendly dye-sensitized solar cell (DSSC) using aluminium-doped tin oxide nanoparticles. The doped nanoparticles showed improved optical and electrical properties compared to the undoped ones. The study also investigated the crystal structure, particle size, and photoconductivity of the nanoparticles using analytical tools such as X-ray diffraction and field emission scanning electron microscope. The results demonstrate the potential of Al-doped SnO2 nanoparticles for efficient and environmentally safe photovoltaic applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Jing Wang, Zhinuo Wang, Dongyang Zhao, Yao Liang, Hualin Wang, Nan Wang, Weiwei Jiang, Shimin Liu, Chaoqian Liu, Wanyu Ding, Zhihua Zhang
Summary: Based on the results, co-doping of Sn/Fe in TiO2 nanoparticles inhibited the crystallization transformation and decreased the energy band gap. The abnormal grain growth of the particles was observed due to the influence of calcination temperature and dopant. The co-doped nanoparticles with 0.6 at.% Sn/0.2 at.% Fe and 1.0 at.% Sn/1.0 at.% Fe showed better photocatalytic performance under visible light irradiation, while the nanoparticles co-doped with 0.2 at.% Sn and 0.6 at.% Fe and calcined at 650 degrees C exhibited the highest photocatalytic performance under UV light irradiation.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Lu Zhang, Bolin Zheng, Junyi Zhai, Tao Lin
Summary: In this study, rare earth-doped TiO2 thin films were fabricated by a sol-gel method and it was discovered that the addition of Sn element can significantly reduce the annealing temperature and enhance the photoluminescence intensity of the films.
JOURNAL OF RARE EARTHS
(2023)
Article
Engineering, Chemical
Jan Mrazek, Sandip Bysakh, Roman Skala, Ales Mracek, Anirban Dhar, Ivo Barton, Ivan Kasik
Summary: A versatile sol-gel approach is presented for the synthesis of nanocrystalline (Eu0.5Y0.5)(2)Ti2O7. The crystallization kinetics, nucleation mechanism, and crystal structure were studied. The results showed a regular distribution of Eu3+ and Y3+ ions and provided key information for tailoring the structural properties of nanocrystalline powders for photonic applications.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Nina Kaneva, Assya Bojinova, Karolina Papazova
Summary: Zinc oxide and titanium dioxide semiconductor photocatalysts have been widely used in water treatment due to their high photocatalytic efficiency. By modifying and co-modifying these catalysts with different metals and nonmetals, researchers have improved their photocatalytic properties. In this study, silver was used as a co-catalyst to surface-modify semiconductor films, resulting in increased photocatalytic efficiency for the degradation of organic contaminants.
Article
Materials Science, Multidisciplinary
Pranjal Nautiyal, Victoria Wiedorn, Tony Thomas, Nicole Bacca, Alice White, Arvind Agarwal
Summary: High-resolution printing using two-photon polymerization has allowed for the fabrication of accordion-shaped honeycomb lattices with in-plane mechanical anisotropy. The deformation mechanisms and mechanical properties of the lattice in different orientations were investigated using scanning electron microscopy. The accordion-shaped cells exhibited prominent in-plane anisotropy due to their high aspect ratio.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Multidisciplinary Sciences
Christos Michas, M. Cagatay Karakan, Pranjal Nautiyal, Jonathan G. Seidman, Christine E. Seidman, Arvind Agarwal, Kamil Ekinci, Jeroen Eyckmans, Alice E. White, Christopher S. Chen
Summary: Researchers have successfully utilized high-precision fabrication techniques to create scaffolds and microfluidic valves for a simulated model of the heart. By mimicking organ-level cardiac mechanical function at small scales, they have demonstrated the significance of high-precision fabrication in tissue model studies.
Article
Materials Science, Multidisciplinary
Pranjal Nautiyal, Jenniffer Bustillos, Tamil Selvam, Cheng Zhang, Sudipta Seal, Benjamin Boesl, Arvind Agarwal
Summary: This study investigates the reinforcement potential of boron nitride nanotube (BNNT) to enhance the mechanical strength of titanium alloys, resulting in improved hardness and stiffness, as well as enhanced crack resistance. By adjusting the extent of chemical reactions during sintering, the stress-transfer behavior at the matrix/filler interface can be programmed, leading to increased TiN and TiB phases. Insights from studying subsurface deformation mechanisms and crack resistance enhancement can be applied to design Ti-BNNT microstructures with desired mechanical properties and deformation characteristics.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Tanaji Paul, Riddhi Joshi, Ana Exime, William Edward, Cheng Zhang, Benjamin Boesl, Arvind Agarwal
Summary: This article presents the impact of ultrasonic treatment on the microstructural evolution, mechanical behavior, and tribological response of 2D tungsten disulfide reinforced aluminum matrix composites. The study reveals that ultrasonic treatment significantly enhances the dispersion of tungsten disulfide reinforcements in the aluminum matrix, leading to increased nucleation density, improved elastic modulus, and reduced wear volume.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Indresh Kumar, Rashmi Nayak, Lal Babu Chaudhary, Vashist Narayan Pandey, Sheo K. Mishra, Narendra Kumar Singh, Abhishek Srivastava, Surendra Prasad, Radhey Mohan Naik
Summary: In this study, iron nanoparticles in the alpha-Fe2O3 phase were successfully synthesized using L-ascorbic acid as a reducing agent. The synthesized nanoparticles exhibited good morphology and stability, and showed promising biological adaptability against human carcinoma A549 lung cancer cells.
Article
Materials Science, Multidisciplinary
Ambreen Nisar, Kazue Orikasa Lopez, Tony Thomas, Benjamin Boesl, Arvind Agarwal
Summary: The porosity in ultrahigh-temperature ceramics (UHTCs) is now treated as a functional property for thermal insulation rather than a defect. UHTC foams with tailored porosity and solid solutions have been successfully fabricated using the freeze-drying and pressureless spark plasma sintering techniques. These foams exhibit improved load-bearing capability and thermal insulation compared to monolithic UHTCs.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
David Garcia, Tianhao Wang, R. Sarvesha, Tyler Dolmetsch, Arvind Agarwal, Kenneth A. Ross
Summary: Friction stir additive manufacturing (FSAM) is a sheet-lamination based technique that is influenced by the raster pattern and thermal cycling. This study investigates the impact of raster pattern spacing on the microstructure and properties of Al-5083 during FSAM, showing that controlling the spacing can improve hardness and achieve defect-free joining.
Article
Materials Science, Multidisciplinary
E. H. H. Hasabeldaim, H. C. Swart, E. Coetsee, Promod Kumar, R. E. Kroon
Summary: In this study, graphitic carbon nitride (g-C3N4) was synthesized through the pyrolysis of urea at 450 degrees C for 2 h. The degradation of g-C3N4 under UV irradiation was investigated using multiple analytical techniques, including XPS, FTIR, ToF-SIMS, nitrogen adsorption-desorption isotherm, and PL spectroscopy.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Coatings & Films
Ambreen Nisar, Cheng Zhang, Arvind Agarwal
Summary: This study presents a novel method of applying a stable and high wear-resistant multi-component ultra-high temperature ceramic coating on a steel substrate using pulsed electro-spark deposition. The coating exhibits significantly higher hardness and improved wear resistance compared to the uncoated steel substrate, making it a promising option for enhancing the wear resistance of structural metallic components.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Priscila Rodrigues De Oliveira, Abhijith Kunneparambil Sukumaran, Luiza Benedetti, Denny John, Katie Stephens, Sang-Hyon Chu, Cheol Park, Arvind Agarwal
Summary: Novel hexagonal boron nitride (h-BN) based polyimide (PI) nanocomposites were prepared, exhibiting excellent thermal stability and chemical resistance. The nanocomposites showed improved tribological performance and neutron shielding capacity compared to neat PI under high temperature and neutron radiation environments.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Sohail M. A. K. Mohammed, Tanaji Paul, Denny John, Cheng Zhang, Arvind Agarwal
Summary: This study successfully achieves the dispersion and reinforcement of boron nitride nanotubes in aluminum matrix composites through ultrasonic cavitation-assisted casting, resulting in improved grain refinement and mechanical properties of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Engineering, Manufacturing
Abderrachid Hamrani, Fatma Zohra Bouarab, Arvind Agarwal, Kang Ju, Hamid Akbarzadeh
Summary: This review provides an exhaustive exploration of multiple wire arc additive manufacturing (MWAAM) techniques and their applications in additive manufacturing and welding. The versatility and potential of these techniques, which can fabricate a variety of materials, are emphasized, and their relevance in major industries such as aerospace, naval, automotive, and energy is highlighted.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Nanoscience & Nanotechnology
Kazue Orikasa, Tyler Dolmetsch, Lihua Lou, Tony Thomas, Benjamin Boesl, Arvind Agarwal
Summary: In this study, ultralight boron nitride nanoplatelet (BNNP) foams were fabricated via freeze-drying, and their highly anisotropic thermal and mechanical properties were characterized. The study also established a protocol for designing 2D material foams with tailorable properties for thermal management applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
M. I. Rodriguez-Tapiador, A. Jimenez-Suarez, A. Lama, N. Gordillo, J. M. Asensi, G. del Rosario, J. Merino, J. Bertomeu, A. Agarwal, S. Fernandez
Summary: This study investigates the effects of temperature and gas working pressure on the solar absorption capabilities of Cu3N thin films. The results show that Cu3N thin films have favorable optical properties and resilience against defects, making them promising for solar energy applications.
Article
Materials Science, Ceramics
Tony Thomas, Ambreen Nisar, Cheng Zhang, Shreyas Joglekar, Mark Pankow, Benjamin Boesl, Arvind Agarwal
Summary: This study investigates the dynamic impact behavior and fracturing evolution of TaxHf1-xC samples under high strain rates. Ta0.5Hf0.5C exhibits the highest compressive strength and significantly reduces the crack propagation rate. This effect is attributed to dislocation pile-ups, nano-twin formation, and inter grain twisting.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Nishi Mehak, Bindu Rani, Aadil Fayaz Wani, Shakeel Ahmad Khandy, Ajay Singh Verma, Atif Mossad Ali, M. A. Sayed, Shobhna Dhiman, Kulwinder Kaur
Summary: In this study, the electronic, structural, and thermoelectric properties of newly designed layered rare-earth metal germanide halides were investigated. The materials showed promising thermoelectric performance, making them suitable candidates for energy harvesting in thermoelectric applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Devidas I. Halge, Vijaykiran N. Narwade, Nabeel M. S. Kaawash, Pooja M. Khanzode, Sohel J. Shaikh, Jagdish W. Dadge, Prashant S. Alegaonkar, Rajeshkumar S. Hyam, Kashinath A. Bogle
Summary: This study presents the design and fabrication of a high-performance blue light photodetector using an n-type cadmium sulfide (CdS) thin film and a p-type polyaniline (PANI). The photodetector demonstrates exceptional performance characteristics, including high responsivity, detectivity, and sensitivity, along with rapid response time and rectification behavior. The research represents a significant advancement in the field of high-performance photodetectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Da Hu, Jiabin Lu, Qiusheng Yan, Yingrong Luo, Ziyuan Luo
Summary: This study introduces a chemical mechanical polishing technique based on metal electrochemical corrosion for single-crystal SiC to address the environmental pollution caused by the polishing solution in chemical mechanical polishing. Wear experiments were conducted to investigate the wear properties of SiC C-surface under different grinding ball materials and solutions. The proposed mechanism of material removal in single-crystal SiC via metal electrochemical corrosion was discussed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Lifang Mei, Long Lin, Dongbing Yan, Yu Liang, Yu Wu, Shuixuan Chen
Summary: This paper investigates the removal of CuO particles from silicon wafer surfaces using a picosecond laser. Numerical calculations and experimental research were conducted, and a thermal-stress coupled finite element model was established. The results show that as the laser energy density increases, the removal rate of CuO particles initially increases and then decreases, while the roughness of the silicon substrate decreases and then increases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Michihiro Yamada, Shuhei Kusumoto, Atsuya Yamada, Kentarou Sawano, Kohei Hamaya
Summary: In this study, we demonstrated the low-temperature growth of a Ge layer on a Co-based Heusler alloy via Sn doping, which improved the magnetic properties and spin signal.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Xiang-Long Wei, Bao-Feng Shan, Zong-Yan Zhao
Summary: This study synthesized and characterized a CuAlO2/CuGaO2 heterostructure and evaluated its photocatalytic performance. The heterostructure exhibited superior performance compared to individual CuAlO2 and CuGaO2 photocatalysts, with increased carrier concentration, enhanced redox capabilities, superior electrochemical stability, and reduced interfacial resistance. Photocatalytic experiments demonstrated the remarkable oxidation potential and notable reduction activity of the heterostructure, outperforming CuAlO2 and CuGaO2 in degradation rates and hydrogen production rates, respectively. These findings highlight the superior performance and broad applicability of the CuAlO2/CuGaO2 heterostructure in various photocatalytic reactions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Micka Bah, Daniel Alquier, Marie Lesecq, Nicolas Defrance, Damien Valente, Thi Huong Ngo, Eric Frayssinet, Marc Portail, Jean-Claude De Jaeger, Yvon Cordier
Summary: This study investigates the AlN nucleation layer issue in GaN high frequency telecommunication and power switching systems fabricated after heteroepitaxy on Silicon or Silicon Carbide. It is shown that using 3C-SiC as an intermediate layer can significantly decrease RF propagation losses. Measurements and analyses demonstrate that dopant diffusion into the 3C-SiC pseudo-substrate is confined beneath the interface, and a slightly conductive zone is present beneath the AlN/3C-SiC interface, explaining the low propagation losses obtained for the devices. This work highlights the importance and efficiency of the 3C-SiC intermediate layer as a pseudo-substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuang Wang, Lijun Wu, Zhiqing Wang, Ziyue Qian
Summary: The geometric structure and electrical properties of zigzag and armchair DWSiNT perfect tubes with different Stone-Wales defects were simulated using the SCC-DFTB method. It was found that the atomic arrangement, stability, energy gap, and charge distribution strongly depend on the type of tube. The effects of strong and weak electric fields on the tubes were also investigated, showing different impact on stability and energy gap. These findings have implications for future experimental studies.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, Sunil Singh Kushvaha, Sambasivam Sangaraju, Venkata Krishnaiah Kummara
Summary: This study focuses on the preparation and performance of MIS-type high-k dielectric oxide-based UV photodetectors. The researchers found that the Au/Ta2O5/GaN devices prepared on Ta2O5/GaN heterojunction with post-annealing exhibited improved photoresponsivity, EQE, and rise/fall times. This improvement is attributed to the optimized band configuration of the Ta2O5/GaN heterostructure and the effect of post-annealing on photogenerated charge carriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Jean-Francois Michaud, Marc Portail, Daniel Alquier, Dominique Certon, Isabelle Dufour
Summary: This paper reviews the use of MEMS devices without sensitive layers in gas detection applications. These devices can measure a physical property of the gas to determine its concentration, and have the advantages of generality and high detection limits.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Kanyu Yang, Chaojie Shi, Ruizhao Tian, Haoyue Deng, Jie He, Yangyang Qi, Zhengchun Yang, Jinshi Zhao, Zhen Fan, Jun Liu
Summary: This study investigates the electrical and synaptic properties of Ag/TiO2 nanorod/FTO-based RRAM devices, focusing on the impact of different seed layer thicknesses on nanorod thickness and RRAM performance. The devices show remarkable achievements in terms of endurance, self-compliance, and resistance switching ratio. The switching mechanism is attributed to space-charge-limited conduction resulting from electron trapping in oxygen vacancy traps. The devices also maintain stable synaptic properties even after undergoing multiple cycles of long-term potentiation and depression.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Karthickraj Muthuramalingam, Wei-Chih Wang
Summary: This study presents a non-destructive approach using terahertz time-domain spectroscopy (THz-TDS) to estimate the electrical properties of semi-insulating compound semiconductors. The study successfully measures the resistivity and carrier concentration of semi-insulating Silicon Carbide (SiC) and Indium Phosphide (InP) wafers using THz-TDS in transmission mode. The simplified Drude model and the Nelder-Mead algorithm are employed to estimate the electrical properties, and the results are in accordance with the manufacturer specifications. The feasibility of non-destructive mapping of the electrical properties is demonstrated, offering a promising tomographic inspection approach for online monitoring.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Pengfei Wei, Rui Tong, Xiaofeng Liu, Yao Wei, Yongan Zhang, Xu Liu, Jian Dai, Haipeng Yin, Dongming Liu
Summary: This study investigates the influence of SiNx and SiOxNy as rear-side passivation films on the performance of PERC+ cells. SiNx film is found to have better passivation performance and resistance to aluminum paste erosion, while SiOxNy film exhibits better optical performance. By designing multi-layer SiNx/SiOxNy/SiNx stacks, the cells' efficiency and bifaciality are significantly improved.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuangting Ruan, Xiaolan Li, Wen Cui, Zhihui Zhang, Zhihui Xu, Huanqi Cao, Shougen Yin, Shishuai Sun
Summary: Integrating photosensitive electrode materials can effectively improve the low temperature tolerance and enhance energy density and power density. The surface morphology reconstruction technique can increase the active surface area and improve electrolyte contact, leading to higher specific capacity. Additionally, the electrodes demonstrate excellent photoelectric and photothermal conversion abilities, allowing the supercapacitor to maintain high energy density even at low temperatures.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Review
Engineering, Electrical & Electronic
Ashmalina Rahman, James Robert Jennings, Mohammad Mansoob Khan
Summary: This review provides a comprehensive overview of the synthesis and applications of nanostructured CuInS2 in photocatalytic applications. Various strategies, including the introduction of dopants, surface decoration, and heterojunction formation, have been summarized to improve the photocatalytic performance of CuInS2. However, scientific challenges such as the high carrier recombination rate limit the broad application of CuInS2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
