Article
Nanoscience & Nanotechnology
Minh-Thanh Do, Kevin Zimny, Abhishek Singh Dahiya, Jinkai Yuan, Rajaoarivelo Mbolotiana, Eric Lebraud, Cedric Lambin, Francois Lagugne-Labarthet, Wilfrid Neri, Mario Maglione, Annie Colin, Marie-Helene Delville, Philippe Poulin
Summary: This study directly observes a single-phase ferroelectric structure stabilized by size-induced thermal residual stress in NaNbO3 nanowires and demonstrates their excellent efficiency for lead-free piezoelectric nanocomposites. This contradicts the performance of BaTiO3 nanowires and is explained by structure modifications at the nanoscale.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Faysal Naeem, Mohsin Saleem, Hamid Jabbar, Gulraiz Tanvir, Fiza Asif, Abrar H. Baluch, Muhammad Irfan, Abdul Ghaffar, Adnan Maqbool, Tayyab Rafiq
Summary: This work successfully synthesized lead-free piezoelectric ceramics 0.74(Bi0.5Na0.5TiO3)-0.26(SrTiO3) (BNT-ST26) and niobium-substituted (Nb-BNT-ST26), and confirmed the effect of niobium substitution on the perovskite phase structure of BNT-ST26 ceramics through X-ray diffraction and Raman spectra. Electromechanical properties revealed that addition of 0.5% niobium resulted in the optimal piezoelectric performance and dielectric effect, making it suitable for high-temperature, stable, frequency-dependent, lead-free piezoelectric devices.
Article
Engineering, Electrical & Electronic
Hicham Ait Laasri, Didier Fasquelle, Amina Tachafine, Jean-Claude Carru, Mohamed Rguiti, Mohamed Elaatmani
Summary: Hybrid composites of BT nanoparticles in PVDF polymer showed significant enhancements in dielectric constant and ferroelectric polarization. The composite with 30% volume fraction of BT nanoparticles exhibited abnormal dielectric behavior and increased energy storage density.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mariya Aleksandrova, Ivailo Pandiev
Summary: This paper discusses impedance measurements of ferroelectric structures involving lead-free oxide and polymer-oxide composite coatings for sensing and energy harvesting applications. Three different ferroelectric materials grown on solid or flexible substrates are investigated for their basic resonant characteristics, with equivalent electrical circuit models applied to explain their electrical behavior. Temperature and frequency dependences of the dielectric permittivity and losses are also measured for the polymer-oxide composite device.
Article
Materials Science, Ceramics
Seong Wook Cho, Jeong Min Baik, Young Hun Jeong
Summary: Dielectric, ferroelectric, and piezoelectric properties of 0.36(Bi1-xSmx)ScO3-0.64PbTiO3 (BSPT-xSm) ceramics were studied for high temperature piezo-electric device application. Sm-substitution in BSPT-xSm ceramics resulted in degradation of their rhombohedral side and enhancement of dielectric constant. However, the grain size and ferroelectric behavior showed insignificant variations. The BSPT-3%Sm ceramic exhibited excellent piezoelectric values and a high ferroelectric transition temperature.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Mohamed Hassen Khedhri, Mohamed Lajnef, Slim Salhi, Najmeddine Abdelmoula, Hamadi Khemakhem, Frederic Dubois, Redouane Douali
Summary: This study investigates the impact of Ba0.8Ca0.2TiO3 (BCT) nanoparticles on the properties of nanocomposite films with a polyvinyl alcohol (PVA) polymer matrix. The study develops a new strategy to prepare stable aqueous BCT suspensions and successfully disperses them in PVA. The results show that BCT nanoparticles are well dispersed in the PVA matrix. The addition of BCT nanoparticles has a minimal effect on the thermal stability and glass transition temperature of the nanocomposites. The nanocomposites exhibit a decrease in the energy gap and a significant increase in the dielectric constant with increasing BCT concentration.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Guo Tian, Weili Deng, Tao Yang, Da Xiong, Hongrui Zhang, Boling Lan, Lin Deng, Binbin Zhang, Long Jin, Haichao Huang, Yue Sun, Shenglong Wang, Weiqing Yang
Summary: In this study, the mechanism of interfacial polarization in barium titanate/poly(vinylidene fluoride-ran-trifluoroethylene) (BTO/P(VDF-TrFE)) nanocomposite is revealed using Kelvin probe force microscope (KPFM) and theoretical stimulation. The mismatch of permittivity between matrix and filler leads to the accumulation of charges, inducing local polarization in the interfacial region and promoting piezoelectricity independently. The strategy of interfacial polarization to enhance piezoelectricity is also validated in other similar nanocomposites, providing new insights for boosting performances in ferroelectric nanocomposites.
Review
Chemistry, Multidisciplinary
Shaojie Wang, Zhen Luo, Jiajie Liang, Jun Hu, Naisheng Jiang, Jinliang He, Qi Li
Summary: Polymer nanocomposite dielectrics with exceptional electric properties are discussed in this critical overview. The role of the matrix/particle interface in determining the performance of these materials is emphasized. Various experimental strategies and characterization techniques for studying the local property-structure correlation of the interface are analyzed, with a focus on their unique capabilities. The limitations of each strategy are evaluated and compared, and future research directions are proposed.
Article
Materials Science, Ceramics
Renfen Zeng, Fen Ye, Xiangping Jiang, Chao Chen, Xiaokun Huang, Xin Nie
Summary: The microstructure and properties of Ce-doped BTTW-BITT ceramics were analyzed, and it was found that an appropriate amount of Ce ion doping could improve the performance, enhance the piezoelectric activity, and improve the thermal stability.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Jiang Shao, Le Zhou, Yuqi Chen, Xue Liu, Mingbo Ji
Summary: This study proposed an improved Knott model by introducing the interphase region and assuming its properties, which accurately predicts the dielectric constant of polymer-based nanocomposites. The research results show that factors such as polymer matrix, nanoparticles, interphase dielectric, thickness, nanoparticle size, and volume fraction have an important impact on the dielectric properties of nanocomposites.
Article
Chemistry, Physical
Kijoo Eom, Sangyun Na, Joong-Kwon Kim, Hyunhyub Ko, Jungho Jin, Seok Ju Kang
Summary: Non-fluorinated ferroelectric polymers, specifically odd number Nylons, have garnered attention for their solution-processibility and decent ferroelectric characteristics. A ferroelectric and piezoelectric Nylon-11 delta' phase crystal film has been successfully manufactured through a humidity modulated casting and subsequent melt-quenching process, showing promising high-quality performance.
Article
Materials Science, Multidisciplinary
Shaik Sabira Begum, H. Bhavana, S. S. Bellad
Summary: Magnetoelectric nanocomposites of ferrite and ferroelectric phases were synthesized using a self-propagating auto combustion method and thick films were fabricated using screen printing technique. The study revealed coexistence of spinel structure and perovskite structure in the materials. The dielectric properties showed low-frequency dispersion, mid-frequency absorption peaks, and a small polaron hopping mechanism. The ME effect was observed up to a certain bias field. The findings contribute to the understanding of the behavior of these nanocomposites.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Chemical
H. Srinivasa Varaprasad, P. V. Sridevi, M. Satya Anuradha
Summary: The study investigated the properties of novel semiconducting metal oxide composites added with SnO2/CeO2, enhancing the structural, optical, and dielectric characteristics. The addition of additives such as SnO2 and CeO2 modified the parameters of the composites, showing significant potential for improving the material's performance.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jin Hu, Shufen Zhang, Bingtao Tang
Summary: 2D materials show great potential in dielectric and energy storage applications, with electrically conductive fillers enhancing dielectric constant and dielectric loss, while highly-insulating fillers improve breakdown strength and energy storage capacity of PNDs. Different filler and system designs can further enhance the properties of PNDs.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Ceramics
Mehdi Shoorangiz, Zahra Sherafat, Elham Bagherzadeh
Summary: The emerging smart PVDF-based composites can address the intrinsic property deficiencies in their components. The properties of these composites are determined by their constituents and fabrication method. In this study, potassium sodium niobate (KNN) and MWCNTs were used as primary reinforcement and to improve electrical properties, respectively. Solution casting was employed to prepare PVDF-KNN-CNT composite films. SEM, XRD, FTIR, and TGA methods were used to characterize the composites, and dielectric, piezoelectric, and ferroelectric properties were investigated. The results showed that the composites' dielectric, piezoelectric, and ferroelectric properties strongly depend on KNN content.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Tapas K. Das, Tapan Ping, Manoj Mohapatra, Shahid Anwar, Chinnakonda S. Gopinath, Bikash Kumar Jena
Summary: A one-step hydrothermal reaction was developed to synthesize Ni-doped ReS2 nanostructure with sulphur defects. The material exhibited excellent OER activity, low Tafel slope, and good long-term durability. The high faradaic efficiency was attributed to the synergistic effect of Ni-in and S-out on the ReS2 nanostructure.
CHEMICAL COMMUNICATIONS
(2022)
Article
Polymer Science
Dipika Priyadarsini Jena, Shahid Anwar, R. K. Parida, B. N. Parida, Nimai C. Nayak
Summary: The research focused on exploring a new material MXene-based polymer composite with high-dielectric constant and low-dielectric loss, which showed significantly improved real dielectric permittivity and low-dielectric dissipation loss at 5 phr of Ti3C2Tx loading. This work provides a promising approach to fabricate polymer films with improved dielectric permittivity and low-loss tangent for potential applications in flexible electronic materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Ceramics
Bishnu Choudhary, Sharmistha Anwar, Dmitry A. Medvedev, Laxmidhar Besra, Shahid Anwar
Summary: In this study, a nano crystalline LCO powder was prepared and characterized. The results showed that the electrical conductivity of LCO is greatly affected by the sintering temperature and the presence of C- and F-type phases.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
P. Elorika, S. Jayasri, A. Sharmistha, S. Anwar
Summary: Calcium substitution has significant effects on the structural and physical properties of Barium Titanate, including crystal structure, dielectric, ferroelectric, piezoelectric, and optical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Sharmistha Anwar, Shahid Anwar, Bibekananda Nayak, Rapaka Siva Sankar
Summary: Nanocomposite coatings offer great potential for improving hardness, oxidation resistance, and wear resistance. In this study, nc-WNNi nanocomposite coatings were deposited on silicon substrates using reactively sputtered method. The coatings were characterized using various techniques, and it was found that the mechanical properties decreased with increasing nickel content. The highest mechanical properties were observed in the nc-WN10Ni film.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Automation & Control Systems
Hafsa Naveed, Abid Sohail, Jasni Mohamad Zain, Noman Saleem, Rao Faizan Ali, Shahid Anwar
Summary: Question and answer websites are widely used by professionals, but they struggle with handling meaningless and irrelevant content. This study successfully identifies user insincere questions on the Quora platform using a pre-trained model, achieving significant improvement.
INTELLIGENT AUTOMATION AND SOFT COMPUTING
(2023)
Article
Materials Science, Multidisciplinary
Sharmistha Anwar, Shahid Anwar, Barsha Priyadarshini, Rapaka Siva Sankar
Summary: This study evaluates the structural and mechanical properties of CrAlN coating obtained through reactive RF magnetron sputtering. The study shows that different Ar:N-2 ratios strongly affect the crystalline microstructure and mechanical properties of the deposited coatings, with the 20:6 ratio achieving the highest elastic modulus and hardness value.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Rahul Mitra, Ananthakumar Ramadoss, Shahid Anwar, Unnikrishnan Manju
Summary: In this study, we comprehensively investigated the properties of ZnTa2O6 (ZTO) system, including its structure, morphology, vibrational, thermal, and surface charge properties. The results showed that ZTO has high-temperature stability and excellent piezoelectric properties. This makes ZTO a promising material for applications in energy harvesting, electronics, memory storage, and electromechanical systems.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Ceramics
Shahid Anwar, Sheeba Sonali, Sharmistha Anwar
Summary: In this study, AlSi nanocomposite coating was deposited on float glass substrate by RF magnetron sputtering in Ar/N2 reactive atmosphere. The effect of deposition time on microstructure, mechanical and optical properties was investigated. The XRD analysis revealed the formation of h-AlN phase in the film deposited for 2 h, indicating a transition from amorphous to polycrystalline structure. The coating thickness increased with deposition time, as confirmed by stylus profiler. The coating exhibited high optical transparency (>90%) and low surface roughness (Ra < 2 nm). The maximum hardness of the coating was 31 GPa with an elastic recovery of 92%.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Barsha Priyadarshini, Shahid Anwar, Sharmistha Anwar
Summary: This article investigates the influence of substrate temperature on the structural, microstructural, and mechanical properties of Chromium-Aluminium-Nitride (CrAlN) films deposited on Si(100) and SS-304 substrates using radio frequency magnetron sputtering. Various characterization techniques were employed to establish the relationship between the film's structure and mechanical properties. The study shows that the films possess a FCC NaCl type structure with the primary orientation along the (200) direction. The hardness and elastic modulus measurements indicate that the coating deposited at 400 degrees C exhibits the best mechanical properties.
Article
Materials Science, Multidisciplinary
P. Elorika, Sharmistha Anwar, Shahid Anwar
Summary: The effect of hafnium (Hf4+) substitution on the properties of barium titanate (BT) was investigated. The structural refinement confirmed the single phase formation in pure BT and a mixture of phases in Hf-doped BT. Raman analysis confirmed the presence of [TiO6] and [HfO6] octahedra. XPS analysis confirmed the formation of structural disordering due to oxygen vacancies. The highest piezoelectric charge coefficient was found in BHT-5 (5% Hf) and the ceramics exhibited high energy storage efficiency and wide optical bandgap suitable for optoelectronic applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Multidisciplinary
Shahid Anwar, Sharmistha Anwar, Barsha Priyadarshini
Summary: In this study, AlSiN ternary coatings were deposited by radio frequency magnetron sputtering in Ar/N-2 reactive atmosphere. The effect of different Ar:N2 ratio on microstructure, mechanical and optical property were investigated using various characterization techniques. The results showed that the composition and ratio of Ar:N-2 influenced the structure and properties of the coatings, with the 20:6 ratio resulting in a nanocrystalline structure and the highest hardness.
Article
Chemistry, Physical
Bishnu Choudhary, Shahid Anwar
Summary: In this study, La2-xSmxCe2O7 ceramics were synthesized using the glycine-nitrate combustion method, and the effects of Sm doping on their phase structure, microstructure, and electrical properties were investigated. La1.95Sm0.05Ce2O7 exhibited the highest ionic conductivity of 3.7 x 10(-3) S cm(-1) at 700 degrees C in a moist environment. Thin-film deposition of La1.95Sm0.05Ce2O7 via electrophoretic deposition showed high power density at 700 and 650 degrees C.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
S. Jayasri, P. Elorika, Shahid Anwar
Summary: In this study, the synthesis of lead-free ceramic sodium bismuth titanate (Na0.5Bi0.5TiO3/NBT) via a cost and time-effective microwave synthesis route is reported. The microstructural, electrical, and optical characteristics of NBT ceramics are investigated. The results show that NBT samples sintered for 30 and 40 minutes are single-phase with tightly packed micron-sized grains and ferroelectric properties. Additionally, an improved piezoelectric coefficient is observed with increasing sintering time.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yathavan Subramanian, Biswajit Mishra, Rajashree P. Mishra, Niharika Kumar, Sweta Bastia, Shahid Anwar, Rameshkumar Gubendiran, Yatendra S. Chaudhary
Summary: The growing contamination of water with endocrine-disrupting compounds (EDCs) is posing a serious threat to human and animal health. Photocatalytic degradation is a promising approach for degrading EDCs due to its low energy consumption and absence of secondary pollution. In this study, the perovskite photocatalyst bismuth ferrite (BiFeO3) was modified to enhance the degradation efficiency of EDCs. The modified BiFeO3-Bi2S3 photocatalyst exhibited improved visible light harvesting, faster charge transfer kinetics, greater degree of excitons separation, and higher dielectric constant, resulting in enhanced degradation of EDCs.
NEW JOURNAL OF CHEMISTRY
(2022)
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)
