Article
Chemistry, Physical
Irshad Ahmad, Shazia Shukrullah, Muhammad Yasin Naz, Muhammad Athar Rasheed, Mukhtar Ahmad, Ejaz Ahmed, Muhammad Shoaib Akhtar, N. R. Khalid, Abid Hussain, Sadia Khalid
Summary: Decorating carbon nanotubes onto Sr doped ZnO nanoparticles resulted in a highly efficient photocatalyst for hydrogen evolution under visible light illumination. The improved hydrogen evolution activity of Sr doped ZnO/CNTs is attributed to high surface area, Sr doping, and construction of heterojunction, extending light absorption and improving charge separation. The proposed photocatalytic mechanism is based on Mott-Schottky study, explaining the interfacial charge transfer process from ZnO to CNTs and Sr.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
M. Rocha, Francisca P. Araujo, S. Castro-Lopes, Idglan S. de Lima, Edson Cavalcanti Silva-Filho, Josy Anteveli Osajima, Carla S. Oliveira, Bartolomeu C. Viana, Luciano C. Almeida, Y. Guerra, R. Pena-Garcia
Summary: In this study, the influence of Fe and Pr addition on the structural, optical, and antibacterial properties of spherical ZnO nanoparticles synthesized via sol gel method was investigated. The lattice constants values increased while the average crystallite size decreased with varying Pr concentration. Raman and FTIR spectroscopies confirmed the single-phase formation of ZnO and the presence of oxygen vacancies. The samples exhibited agglomerated spherical morphology and the textural properties were affected by the inclusion of Fe. The synthesized materials showed promising antimicrobial activity against Escherichia coli and Staphylococcus aureus due to nanomaterial-bacteria interactions.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Leandro L. Peres, Camila M. Cholant, Rafaela M. J. Lemos, Marco P. Rodrigues, Luana U. Kruger, Richard Pereira, Wladimir H. Flores, Andre Gundel, Douglas L. da Silva, Agnieszka Pawlicka, Cesar O. Avellaneda
Summary: The study used the peroxovanadate sol-gel method to produce ZnO-doped V2O5 thin films, demonstrating that ZnO doping improved the cyclic stability and reversibility of the films and resulted in a mixture of crystalline phases.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Leandro L. Peres, Camila M. Cholant, Rafaela M. J. Lemos, Marco P. Rodrigues, Luana U. Krueger, Richard Pereira, Wladimir H. Flores, Andre Guendel, Douglas L. da Silva, Agnieszka Pawlicka, Cesar O. Avellaneda
Summary: This study used the peroxovanadate sol-gel method to produce ZnO-doped V2O5 thin films and investigated the effect of doping on the electrochromic and structural characteristics of the films. The results showed that ZnO doping improved the cyclic stability and reversibility of the films, making them promising candidates for electrochromic device applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Luis A. Hermida-Montero, F. Paraguay-Delgado, Luisa F. Cruz, Daniel Carrillo, Arturo Mtz-Enriquez, Nicolaza Pariona
Summary: This study investigated the in-vitro antifungal activity of ZnO nanoparticles against mutualistic fungi of ambrosia beetles, revealing that uncoated ZnO nanoparticles obtained by the hydrothermal method showed higher antifungal capacity. The coating of NPs was found to be more critical than their size in improving antifungal properties.
Article
Chemistry, Physical
G. Ortiz Rabell, M. R. Alfaro Cruz, I Juarez-Ramirez
Summary: In this study, ZnO/GeO2 compound was prepared and evaluated as active materials for H-2 generation through photoelectrochemical and photocatalytic processes. The compound demonstrated improved light absorption, enhanced charge transfer and efficient electron-hole pair separation, leading to higher photocurrent response and catalytic activity compared to ZnO. The presence of GeO2 in the compound also contributed to the reduction of photocorrosion and increased the number of active sites, resulting in a significant increase in H-2 production.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Willians Lopes de Almeida, Nilson S. Ferreira, Fabiano Severo Rodembusch, Vania Caldas de Sousa
Summary: ZnO nanoparticles were successfully synthesized using cassava starch as a chelating agent. Analysis through XRD, FTIR, and TEM revealed the properties and structures of the synthesized nanoparticles. The results showed that the average size of the nanoparticles increased with the rise in calcination temperature, and the optical properties were affected accordingly.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Irshad Ahmad, Muhammad Shoaib Akhtar, Ejaz Ahmed, Mukhtar Ahmad, Muhammad Yasin Naz
Summary: The study investigated high photocatalytic hydrogen evolution using zinc oxide (ZnO), Lutetium (Lu) modified ZnO, and Lu modified ZnO/CNTs composite. The Lu modified ZnO/CNTs composite showed the highest hydrogen evolution rate due to red shift in optical absorption, increased charge separation, high surface area, and cleavage of glycerol by Lu. The synthesized samples displayed prolonged photostability with steady hydrogen evolution in successive cycle runs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Piangjai Peerakiatkhajohn, Teera Butburee, Jung-Hoon Sul, Supphasin Thaweesak, Jung-Ho Yun
Summary: The synthesis of Al/ZnO NPs via the sol-gel method with different calcination temperatures and Al dosages showed significant impacts on their structural, morphological, and optical properties. Among them, the ZnO NPs calcined at 200℃ exhibited the highest light absorption property and MO removal efficiency under UV light, while the 5% Al/ZnO NPs demonstrated superior photocatalytic activity under visible light irradiation.
Article
Chemistry, Multidisciplinary
Anithadevi Sekar, Ramanan Vadivel, Ramanujam Ganesh Munuswamy, Rakhi Yadav
Summary: The study introduces a new fingerprint visualizing agent, the biocompatible zinc oxide-carbon dots/silica gel (C-ZnO-dots/Si) nanopowder, which is low-cost and non-toxic. Results show that the synthesized nanopowder performs well in LF identification and can extract features of Level 1-3.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Abbas Eslami, Salahaddin Abdollah Lachini, Maryam Shaterian, Maryam Karami, Morteza Enhessari
Summary: In this research, magnesium aluminate (MgAl2O4) spinel nanoparticles were successfully synthesized using a sol-gel process with stearic acid as a capping agent. The synthesized nanoparticles exhibited an average crystallite size of 12 nm, an optical band gap of 2.84 eV, and a mean pore size of 20.2 nm. Characterization techniques, including FTIR spectroscopy, FESEM, EDS, and VSM, were used to analyze the resulting powders. The electrochemical analysis showed that the MgAl2O4 spinel nanoparticles had a notable hydrogen storage capacity of 4000 mAh/g, making them potential candidates for hydrogen storage applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
S. Benallal, S. Boumaza, R. Brahimi, M. Trari
Summary: This study focuses on the synthesis of Ca2Fe2O5 as a photocatalyst and its characterization using physical and electrochemical methods. The results show that Ca2Fe2O5 has good photocatalytic performance for hydrogen production under visible light. Coupling Ca2Fe2O5 with ZnO-SG further enhances the catalytic performance. Additionally, ZnO-P prepared by precipitation is more efficient than ZnO-SG and TiO2-P25.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Soumaya Jaballah, Yazeed Alaskar, Ibrahim AlShunaifi, Imed Ghiloufi, Giovanni Neri, Chaker Bouzidi, Hassen Dahman, Lassaad El Mir
Summary: The study aims to enhance the gas sensing capability of ZnO based sensors through investigating the effect of Al and Mg doping. Experimental results show that Al and Mg have a significant impact on the sensing performances towards H-2 and CO gases. The sensor based on 5A1MZO exhibits high sensitivity and low detection limits to H-2 and CO.
Article
Materials Science, Ceramics
Saad Ullah, Maria Shabir, Muhammad Athar Rasheed, Irshad Ahmad, Ejaz Ahmed, Mukhtar Ahmad, N. R. Khalid, Waheed Qamar Khan
Summary: In this study, silver and yttrium co-doped zinc oxide (Ag-Y-ZnO) nanoparticles were successfully prepared using a sol-gel process. The obtained catalysts were characterized and evaluated for their photocatalytic activity. The Ag-Y-ZnO catalyst exhibited superior performance, with H-2 evolution rates of 587.4 mu molh(-1)g(-1) and 425.4 mu molh(-1)g(-1) under visible and UV light illumination using a water-methanol mixture, respectively. The catalyst also demonstrated good stability and showed enhanced photocatalytic activity due to red shift in light absorption, inhibited recombination of photoinduced charge carriers, and abundant active sites for H-2 evolution reaction.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mouna Khiari, Michael Lejeune, Mickael Gilliot, Florica Lazar, Aomar Hadjadj
Summary: The original technique developed in this study enables the direct and efficient incorporation of silver metal nanoparticles into ZnO precursor solution, resulting in nanocomposite thin films with a large effective surface area for interaction with the external environment and a large surface area for metal-semiconductor interaction suitable for surface photocatalysis reactions. These nanocomposites exhibit improved photocatalytic performance, stability, and reusability, making them promising for water treatment applications.
Article
Agronomy
Zartash Fatima, Atique-ur-Rehman, Ghulam Abbas, Pakeeza Iqbal, Iqra Zakir, Muhammad Azam Khan, Ghulam Mujtaba Kamal, Mukhtar Ahmed, Shakeel Ahmad
Summary: Climate warming is impacting the phenology, growth and productivity of diverse cropping systems. Using the long-term observed phenological changes of chickpea-mungbean system (CMS) to determine strategies to minimize negative climate change impacts. Phenological stages and phases of both crops are negatively correlated with rising temperatures, with newly evolved cultivars of pulses showing potential to offset some of the temperature-induced changes in phenology.
INTERNATIONAL JOURNAL OF PLANT PRODUCTION
(2021)
Article
Environmental Sciences
Muhammad Habib ur Rahman, Ishfaq Ahmad, Depeng Wang, Shah Fahad, Muhammad Afzal, Abdul Ghaffar, Qaisar Saddique, Mehmood Alam Khan, Shah Saud, Shah Hassan, Muhammad Fahad, Mairaj Din, Shakeel Ahmad, Zhen Yue, Ruidar Ali Shah, Osman Sonmez, Wajid Nasim
Summary: Solar radiation is crucial for lentil yield improvement, and nitrogen application can promote growth and yield. Among the three lentil genotypes studied, PM-2009 showed higher radiation use efficiency and grain yield than the other genotypes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agronomy
Muhammad Tariq, Zartash Fatima, Pakeeza Iqbal, Kamrun Nahar, Shakeel Ahmad, Mirza Hasanuzzaman
Summary: The study aims to tackle late-sowing of cotton by adjusting sowing time and selecting suitable cultivars in a cotton-sunflower cropping system. Results showed that variations in sowing dates impact the growth cycle of crops.
INTERNATIONAL JOURNAL OF PLANT PRODUCTION
(2021)
Article
Chemistry, Physical
Hamid Ali, Aneela Wakeel, Muhammad Junaid Anjum, Waheed Qamar Khan, Faizan Ali Ghauri, Muhammad Raza, Ghulam Yasin
Summary: This study successfully synthesized Mg-Al layer double hydroxide (LDH) intercalated with sodium gluconate (SG) on AZ31, providing excellent corrosion resistance. The results showed that only 0.30M of SG can provide sufficient anions to develop the LDH structure, indicating a concentration dependence in the produced coatings. Electrochemical characterization revealed that the optimum concentration of SG can offer better corrosion resistance.
SURFACE REVIEW AND LETTERS
(2021)
Review
Materials Science, Multidisciplinary
Mohammad Tabish, Ghulam Yasin, Muhammad Junaid Anjum, Muhammad Uzair Malik, Jingmao Zhao, Qiuxiang Yang, Shoaib Manzoor, Hassan Murtaza, Waheed Qamar Khan
Summary: This review discusses the importance of corrosion protection in metallic materials and the use of coating techniques, focusing on layered double hydroxides (LDHs) coatings intercalated with corrosion inhibitors to provide long-term protection against corrosion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Junaid Anjum, Jingmao Zhao, Mohammad Tabish, Hassan Murtaza, Vahdat Zahedi Asl, Qiuxiang Yang, Muhammad Uzair Malik, Hamid Ali, Ghulam Yasin, Waheed Qamar Khan
Summary: The research demonstrated that intercalating 8-quinolinol (8Q) in MgAl-based HT coatings significantly improved corrosion resistance, especially when maintained at a pH of 10 with a 0.30 M concentration of 8Q. The introduction of hydrophobicity and self-healing properties through 8Q intercalation was also confirmed through electrochemical impedance spectroscopy (EIS).
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Environmental Sciences
S. Manzoor, M. A. Malana, T. Alshahrani, R. S. Gohar, W. Q. Khan, M. Najam-ul-Haq, M. F. Ehsan, A. Shah, M. N. Ashiq, S. Ahmed
Summary: A nano-sized semiconductor photocatalyst, zirconium oxide/cadmium sulfide nanocomposite, was successfully developed for the degradation of three aromatic dyes under visible light irradiation. The high degradation efficiency of the composite for different dyes was mainly attributed to the suppression of charge carrier recombination.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Plant Sciences
Muhammad Ali Raza, Hina Gul, Feng Yang, Mukhtar Ahmed, Wenyu Yang
Summary: The frequency of heavy rains is increasing in regions with high annual rainfall due to climate change, affecting crop growth and yields. Moderate defoliation can increase soybean yield, while heavy defoliation decreases growth and yield. A 15% defoliation rate reduces leaf redundancy, improves light transmittance, promotes dry matter translocation to reproductive parts, and ultimately enhances seed yield.
Article
Agronomy
Sahrish Naz, Shakeel Ahmad, Ghulam Abbas, Zartash Fatima, Sajjad Hussain, Mukhtar Ahmed, Muhammad Azam Khan, Ahmad Khan, Shah Fahad, Wajid Nasim, Sezai Ercisli, Carol Jo Wilkerson, Gerrit Hoogenboom
Summary: The study shows that planting dates and maturity stages of potato crops in spring and autumn have been significantly impacted by changes in temperature over the past few decades, with thermal trends, crop management practices, and cultivar changes also playing a role. Growers have implemented adaptation strategies in response to these trends.
EUROPEAN JOURNAL OF AGRONOMY
(2022)
Article
Multidisciplinary Sciences
Rahat Nawaz, Sayed Tayyab Raza Naqvi, Batool Fatima, Nazia Zulfiqar, Muhammad Umer Farooq, Muhammad Najam ul Haq, Dilshad Hussain, Asghar Javeed, Azhar Rasul, Laila Jafri, Saadat Majeed, Waheed Qamar Khan
Summary: In this work, nonwoven cotton fabric was modified using low-cost and eco-friendly precursors for antibacterial applications. The modified fabric exhibited superior antimicrobial efficacy against various bacterial strains without affecting its strength and integrity. The study provides an economical and practical method for commercial purposes, and the modified fabric can be used in various fields such as antimicrobial, health, and food packaging industries.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Yunfei Yu, Qun Wang, Yongqing Li, Mehtab Ur Rehman, Waheed Qamar Khan
Summary: The co-doping of Sr and Zr in CCTO ceramics simultaneously increases the dielectric constant and reduces the dielectric loss. The coexistence of mixed Cu+/Cu2+ and Ti3+/Ti4+ valence states promotes dipole polarization, resulting in higher dielectric constant. The dielectric properties of the materials are analyzed using the internal barrier layer capacitance model.
Article
Pharmacology & Pharmacy
Muhammad Sohail Arshad, Maliha Mujeeb, Saman Zafar, Waheed Qamar Khan, Mohammed Patel, Bushra Yousef, Elshaimaa Sayed, Ming-Wei Chang, Zeeshan Ahmad
Summary: This study aimed to prepare piroxicam loaded polyvinyl pyrollidone (PVP) particulate mat, fabricated mat incorporated tablets and coated polyvinyl alcohol (PVA) films. The prepared formulations showed promising results in improving the solubility of poorly soluble piroxicam and oral/topical anti-inflammatory therapy.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2022)
Review
Chemistry, Physical
Irshad Ahmad, Yanhong Zou, Jiaying Yan, Yuyu Liu, Shazia Shukrullah, Muhammad Yasin Naz, Humaira Hussain, Waheed Qamar Khan, N. R. Khalid
Summary: Photocatalytic technology offers an environmentally friendly and sustainable solution to environmental and energy issues. The efficiency of photocatalysts depends on their ability to absorb light, density of active sites, redox capacity, and electron-hole recombination rate. Modifying intrinsic semiconductor photocatalysts is necessary to enhance their photocatalytic properties. This review focuses on effective strategies and methods to overcome efficiency limitations and discusses the applications and challenges of photocatalysts for large-scale use.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Abubaker Khan, Chenhao Xu, Muhammad Hamza, Mohamed A. Afifi, Naeem Akhtar Qaisrani, Huibin Sun, Bin Wang, Waheed Qamar Khan, Ghulam Yasin, Wei -Bing Liao
Summary: An investigation was conducted to study the influence of peak-ageing and double ageing treatments on the precipitation along different grain boundary orientations of an extruded Al-Zn-Mg-Cu alloy. The results showed that the type of grain boundary precipitates varied depending on the grain boundary orientation and treatment. The study provides new insights into engineering the grain boundary precipitates to achieve desired precipitate types and corresponding mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Electrical & Electronic
Irshad Ahmad, Shazia Shukrullah, Muhammad Yasin Naz, Faisal Khalid Alsaif, Sager Alsulamy, Yasin Khan, N. R. Khalid, Waheed Qamar Khan
Summary: The rational design of S-scheme heterojunctions is a promising strategy for improving the spatial separation of photocarriers and enhancing the stability of heterosystems. In this study, a 2D-1D ZnO-CeO2-Ag plasmonic heterosystem was successfully designed, which showed a significantly higher photocatalytic H2 evolution rate compared to pure ZnO and CeO2. The enhanced photocatalytic efficiency of ZnO-CeO2-Ag is attributed to the design of plasmonic S-scheme heterosystem, which promotes visible light absorption and facilitates the separation and transfer of photocarriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(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)
