Article
Chemistry, Multidisciplinary
Mireia Cifre-Herrando, Gemma Rosello-Marquez, Pedro Jose Navarro-Gazquez, Maria Jose Munoz-Portero, Encarnacion Blasco-Tamarit, Jose Garcia-Anton
Summary: This study focuses on the synthesis and characterization of different types of nanostructures for their potential use as photoanodes in the photoelectrocatalytic degradation of emerging contaminants. The results demonstrate that the optimized nanostructure (TiO2-ZnO) exhibits excellent performance in the photoelectrocatalytic degradation process.
Article
Materials Science, Multidisciplinary
Vardan Galstyan, Nicola Poli, Viacheslav Golovanov, Annalisa D'Arco, Salvatore Macis, Stefano Lupi, Eleonora Bolli, Saulius Kaciulis, Alessio Mezzi, Elisabetta Comini
Summary: There is a growing demand for nanocomposite materials with new functionalities in chemical gas sensors and catalytic devices. Green synthesis methods are widely used to reduce the hazardous effects on human health and the environment. This study reports the fabrication of a nanocomposite material based on WO3 and TiO2 with unique electronic band alignment and gas sensing properties.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Nanoscience & Nanotechnology
Wu Zhang, Haizeng Li, Eric Hopmann, Abdulhakem Y. Elezzabi
Summary: Electrochromism, an emerging energy conversion technology, is facing the major challenge of slow switching speed, especially in inorganic materials. Efficient design of nanostructured electrochromic materials is essential to achieve rapid switching speed and enhance their performance in real-world applications.
Review
Nanoscience & Nanotechnology
Wu Zhang, Haizeng Li, Eric Hopmann, Abdulhalcem Y. Elezzabi
Summary: Electrochromism is a promising energy conversion technology with diverse applications, but the major challenge lies in the slow switching speed in inorganic materials. Efficient design of nanostructured electrochromic materials is crucial for achieving rapid switching speeds. Various classification and synthesis methods for electrochromic materials were discussed in the review, along with outlining challenges and prospects for high-performance nanostructured electrochromic materials.
Article
Optics
G. V. Ashok Reddy, Habibuddin Shaik, K. Naveen Kumar, V. Madhavi, Hitha D. Shetty, Sheik Abdul Sattar, Merum Dhananjaya, B. Daruka Prasad, G. Ranjith Kumar, B. H. Doreswamy
Summary: This study presents the fabrication of TiO2 nanorods/WO3 hybrid thin films and investigates their electrochromic behavior. WO3 thin films were deposited at a constant temperature with varying oxygen partial pressures, while tungsten nanorods were grown on FTO coated glass substrates using a hydrothermal process. The optimized WO3 films were then coated on the TiO2 nanorod film. Material, optical, electrical, and electro-chemical analysis were conducted on the films. The enhanced coloration efficiency of the optimized WO3 films was attributed to their large active surface area, which facilitated H+ ions intercalation. The TiO2 nanorods/WO3 hybrid films exhibited good electrochemical properties, including a diffusion coefficient of 1.8 x 10-7 cm2/s, better than pure WO3 and TiO2 nanorods.
Article
Materials Science, Multidisciplinary
K. Pandurangarao, V. Chitti Babu, V. Ravi Kumar
Summary: Tungsten oxide thin films with titanium dopant were deposited using reactive dc-magnetron sputtering at different temperatures and oxygen partial pressures. The study investigated the effect of titanium and deposition parameters on the morphological and electrochromic properties of the films. The morphology of the films changed with the deposition parameters, with the presence of titanium increasing the grain size. The films exhibited excellent electrochromic properties, with coloration efficiency ranging from 31.8 cm2/C to 101.70 cm2/C.
Article
Energy & Fuels
Likun Wang, Yong Liu, Gaorong Han, Hongli Zhao
Summary: In this study, porous three-dimensional electrochromic films composed of WO3·H2O, WO3, and TiO2 were controllably synthesized by a facile hydrothermal technique. The resulting films exhibited impressive dual-band electrochromic performance with high optical modulation and fast switching speed.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Electrochemistry
Aryal Krishna Prasad, Jong-Young Park, Soon-Hyung Kang, Kwang-Soon Ahn
Summary: The study prepared a W-V mixed metal oxide composite thin-film structure comprising WO3 and V2O5, which showed remarkable performance in both electrochromic and electrochemical energy storage applications, such as fast coloration response and high capacitance.
ELECTROCHIMICA ACTA
(2022)
Review
Chemistry, Physical
Suchita Kandpal, Tanushree Ghosh, Chanchal Rani, Anjali Chaudhary, Jinwoo Park, Pooi See Lee, Rajesh Kumar
Summary: Significant development in science and technology has occurred to meet the rising energy demands, particularly in response to environmental concerns associated with fossil fuels. Electrochromic devices, which combine energy conversion with color modulation, hold great promise for energy storage and saving purposes in buildings and vehicles, and can operate similarly to batteries and supercapacitors.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Aryal Krishna Prasad, Jong -Young Park, Hui Yeong Jung, Je Woo Kang, Soon-Hyung Kang, Kwang-Soon Ahn
Summary: A thin film of nickel-intermixed tungsten oxide (Ni-WO3) composite was fabricated using a simple one-step electrochemical deposition method. The composite film exhibited enhanced electrochromic energy storage properties compared to the individual Ni(OH)2 and WO3 thin films. The improved performance was attributed to the crosslinked and deagglomerated surface of the composite film, which enhanced the electrochemically active surface area and charge transfer kinetics. The Ni-WO3 thin film showed high coloration efficiency, optimum optical contrast, fast coloration response, and excellent capacitance retention.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
K. Naveen Kumar, Habibuddin Shaik, V Madhavi, R. Imran Jafri, Jyothi Gupta, G. Nithya, Sheik Abdul Sattar, G. V. Ashok Reddy
Summary: This study investigates the characteristics of tungsten oxide thin films grown using the GLAD technique at different substrate angles. The results show that the films have an amorphous structure, with columnar growth and surface porosity. As the GLAD angle increases, the optical transmittance and bandgap of the films decrease. The study also reveals that the GLAD angle influences the coloration efficiency and diffusion coefficient.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Wei Wei, Zeyang Li, Zhipeng Guo, Yihang Li, Fengming Hou, Wei Guo, Ang Wei
Summary: This study presents an electrochromic window with satisfactory performance, especially in the NIR region, by utilizing hierarchical amorphous WO3/SnO2 nanoflake arrays synthesized through a combination of hydrothermal and ultraviolet photodeposition methods. The film showed enhanced electrochromic characteristics and significant transmittance modulation in both the NIR and visible regions.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Lili Zhao, Zhuoan Cai, Xiaoyang Wang, Wenbo Liao, Simin Huang, Lingyun Ye, Jilie Fang, Chunxing Wu, Hao Qiu, Lei Miao
Summary: Inspired by the trees-strengthening approach, researchers designed a unique titanium dioxide nanorod arrays-strengthened tungsten trioxide nano-trees heterojunction. The TWNTs film showed excellent electrochromic performance and cycle stability, with 77.35% retention of the initial transmittance modulation after 10,000 cycles. Additionally, trapping-induced degradation could be easily rejuvenated through a potentiostatic de-trapping process. An electrochromic energy storage device (EESD) based on the TWNTs film demonstrated high performance and long-term stability, paving the way for multifunctional smart windows and next-generation optoelectronic devices.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Biochemistry & Molecular Biology
Xiaoshu Qu, Lili Zhou, Zefeng Liu, Zeyu Wang, Jilong Wang, Xiaoyang Yu, Hua Jin, Yanyan Yang
Summary: In this study, a NW-P2W17La nanocomposite was constructed by depositing K-7[La(H2O)(x)(alpha(2)-P2W17O61)] (P2W17La) onto TiO2 nanowires (NW) using a layer-by-layer self-assembly method. The nanocomposite exhibited improved electrochromic and electrochemical performance due to its unique sea-cucumber-like microstructure. The resulting EESD with NW-P2W17La film as the cathode showed outstanding electrochromic and energy storage properties, including high optical modulation, fast switching speeds, and high area capacitance. The device can reversibly switch between transparent and dark blue, indicating that electrochromic contrast can serve as a quantitative indicator of energy storage status.
Article
Chemistry, Multidisciplinary
Biying Zhuang, Qianqian Zhang, Kailing Zhou, Hao Wang
Summary: The growth of titanium dioxide (TiO2)/poly(3,4-ethylenedioxythiophene) (PEDOT) nanorod arrays was achieved through a combination of hydrothermal and electrodeposition methods. The use of TiO2 nanorod arrays as templates for the nanocomposites (TiO2/PEDOT) increased the surface area of the active materials and shortened the diffusion distance of ions. The nanorod structure also facilitated the transfer of electrons and resulted in improved performance of the TiO2/PEDOT film compared to pure PEDOT film.
Article
Optics
S. R. Cynthia, R. Sivakumar, C. Sanjeeviraja
Summary: The ternary CuO:SnO2:ZnO (1:1:1) thin films prepared by radio frequency magnetron sputtering technique showed good sensing characteristics towards NH3 gas detection, with excellent crystalline nature and surface morphology variation. The films exhibited a highest optical transmittance of 87% in the visible region, and excellent sensitivity and stability towards NH3 gas detection at room temperature.
Article
Materials Science, Multidisciplinary
Arul Carolin Amala, Ravi Vignesh, Gobalakrishnan Vasanthi Geetha, Rengasamy Sivakumar
Summary: High electrochromic coloration efficiency vanadium oxide thin films were synthesized using a simple sol-gel spin coating technique. Structural studies confirmed the formation of mixed phase and pure beta-V2O5 phase at different temperatures. The films exhibited improved optical properties at higher temperatures, while the electrochromic behavior was detected in a specific electrolyte solution.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Ranveer Singh, Rengasamy Sivakumar, Sanjeev Kumar Srivastava, Tapobrata Som
Summary: This study reveals the influence of MoOx film thickness on the hole-blocking property of heterojunctions and the unique characteristics of the film in preventing hole flow. Experimental results show that a 10 nm-thick MoOx film exhibits the best hole-blocking property, with subsequent treatments affecting its performance to some extent.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
G. Geetha, S. P. Keerthana, K. Madhuri, R. Sivakumar
Summary: The study investigated the photocatalytic degradation performance of zinc tungstate nanoparticles prepared using different volumes of solvent, with the most efficient dye removal observed at a 30 ml solvent volume. The results showed that ZnWO4 exhibited good crystallinity and optical properties, making it a promising candidate for photocatalytic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Qiannan Zhou, Wei Li, Mengyou Gao, Huizhong Xu, Yu Guo, Lei Sun, Dehua Zheng, Jianjian Lin
Summary: By regulating the ratio of Pluronic F127 to terephthalic acid, researchers successfully designed and synthesized metal-organic frameworks with distinctive morphology, leading to the preparation of a truncated octahedron TiO2@C@MoS2 hierarchical composite electrode material, demonstrating excellent rate capability and cycling stability.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Dhandayuthapani Thiyagarajan, Mengyou Gao, Lei Sun, Xiaochen Dong, Dehua Zheng, Md Abdul Wahab, Geoffrey Will, Jianjian Lin
Summary: In this study, Cu-CoP porous nanoplates were prepared through a polyethylenimine assisted hydrothermal process and subsequent phosphidation treatment. The incorporation of Cu enhances the density of active sites and facilitates fast charge transfer, leading to improved oxygen evolution reaction activity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
B. Muni Babu, R. Sivakumar, C. Sanjeeviraja
Summary: In this work, we reported the enhanced photocatalytic behavior of copper tin hydroxide-based catalyst materials for the degradation of methylene blue dye. The catalyst materials were prepared by a simple co-precipitation technique. The study revealed the crystal phase and morphology of the samples, and analyzed the optical properties and emission spectra to understand the improved photocatalytic performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Dhandayuthapani Thiyagarajan, Arun Thirumurugan, Bong-Kee Lee
Summary: This study successfully synthesized cobalt molybdenum ruthenium oxide nanoplate electrocatalyst and demonstrated its excellent activity and stability in the oxygen and hydrogen evolution reactions. The electrocatalyst required a low voltage for overall water splitting in an alkaline medium, showing great potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Qing Cao, Zhaoyang Cheng, Jiajun Dai, Tianxiao Sun, Guixiang Li, Lili Zhao, Jiayuan Yu, Weijia Zhou, Jianjian Lin
Summary: This study presents a rational design of ZnCo2O4 bimetal oxide templates to heterogeneously dope Zn and N into carbon nanotubes, resulting in enhanced catalytic performance for hydrogen evolution reaction. The utilization of Zn as an electronic regulator and activity promoter provides new insights for the design of high-efficiency electrocatalysts.
Article
Electrochemistry
Zhaoyang Cheng, Mengyou Gao, Lei Sun, Dehua Zheng, Huizhong Xu, Linghui Kong, Chang Gao, Haizhou Yu, Jianjian Lin
Summary: In recent years, the development of efficient, durable, and earth-abundant electrocatalysts for oxygen evolution reaction (OER) has garnered significant attention. This study synthesized a coral-like FeSe/FeSe2 heterostructure catalyst using a solvothermal method and demonstrated its superior OER performance and high anodic current density.
Article
Chemistry, Multidisciplinary
Zhaoyang Cheng, Chao Qu, Chang Gao, Linghui Kong, Penggang Yin, Jianjian Lin
Summary: In this work, commonly available and inexpensive 434-L stainless steel is converted into highly active and stable electrodes for the oxygen evolution reaction (OER) through corrosion and sulfuration strategies. The NixFe1-xS layer and S-doped NixFe oxyhydroxides formed on the catalyst surface are identified as the true active species for OER. The optimized 434-L stainless steel-based electrocatalyst exhibits excellent OER activity with a low overpotential of 298 mV at 10 mA cm(-2) in 1.0 M KOH, along with good stability and low Tafel slope of 54.8 mV dec(-1). This work offers a new approach to utilize 434-L alloy stainless steel as qualified OER catalysts and provides insights into addressing energy and resource waste issues.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
G. V. Geetha, R. Sivakumar, Y. Slimani, Y. Kuroki, C. Sanjeeviraja
Summary: Nowadays, environmental water pollution caused by hazardous heavy metals, especially azo dyes in textile industries, has become a serious concern affecting human health and aquatic life. Photocatalysis using zinc tungstate (ZnWO4) catalysts synthesized through co-precipitation approach with the assistance of surfactants like hexamethyl tetramine (HMTA) and polyvinyl pyrrolidone (PVP) proves to be an efficient method for the removal of water pollution. The degradation of methylene blue (MB) dye by ZnWO4 catalysts shows promising results, achieving complete degradation within 90 minutes, with the highest degradation efficiencies observed for ZnWO4 catalysts containing 0.7 g of HMTA and 0.5 g of PVP surfactants.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Huizhong Xu, Chang Gao, Linghui Kong, Dongxv Li, Jianjian Lin
Summary: In this study, a novel hierarchical porous MoO2@Mo2N@C composite was developed using a molybdenum-based oxyacid salt confined pyrolysis strategy to improve the electrochemical performance of MoO2-based anode. The well-dispersed MoO2 nanoparticles ensured ample active sites exposure to the electrolyte, while conductive Mo2N quantum dots provided pseudo-capacitive response, aiding in the migration of ions and electrons. The interior voids provided buffer spaces to overcome the effect of volume change, resulting in a high initial discharge capacity and decent long-term cycling stability. This work offers a new approach for the construction of advanced anode materials for lithium-ion batteries.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Environmental Sciences
Shichen Li, Dhandayuthapani Thiyagarajan, Bong-Kee Lee
Summary: Immobilization of metal-organic frameworks (MOFs) on electrospun products for wastewater treatment has gained attention. The effect of the overall geometry and surface-area-to-volume ratio of MOF-decorated electrospun architectures on their performances was investigated. Helicoidal PCL/PVP strips were prepared via immersion electrospinning and Zeolitic Imidazolate Framework-8 (ZIF-8) was immobilized on the strips. The high surface-area-to-volume ratio of the ZIF-8-decorated helicoidal strips resulted in improved performance for MB adsorption and photocatalytic degradation.
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)
