Article
Chemistry, Physical
Kavita Sahu, Aditi Bisht, Alapan Dutta, Tapobrata Som, Satyabrata Mohapatra
Summary: Plasmonic nanocomposite thin films of Au-Cu2O-CuO were fabricated by RF magnetron co-sputtering and thoroughly analyzed by various techniques. The nanocomposite thin film showed excellent photocatalytic performance for organic pollutants degradation and significant catalytic activity for 4-NP transformation. The presence of Au nanoparticles in the Cu2O-CuO thin film improved charge separation and transport, enhancing the catalytic and photocatalytic features of the nanocomposite.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Giji Skaria, Ashwin Kumar Saikumar, Akshaya D. Shivprasad, Kalpathy B. Sundaram
Summary: Copper indium oxide thin films were deposited using RF magnetron sputtering and annealed at various temperatures, leading to increased grain size and crystallinity. The films exhibited high optical transmission and a small bandgap change during annealing.
Article
Materials Science, Multidisciplinary
Giji Skaria, Avra Kundu, Kalpathy B. Sundaram
Summary: Copper indium oxide (CuInOx) thin films were deposited using RF magnetron sputtering technique at various substrate temperatures up to 400 degrees C, achieving a p-type thin film with increased conductivity and high transparency. XPS studies confirmed the controlled migration of indium oxide phases during sputtering, leading to superior conductivity and transparency with increasing substrate temperatures. The fabricated p-CuInOx/n-Si heterojunction had a knee voltage of 0.85 V, and initial solar cell parameters were reported after investigating the photovoltaic behavior of the device.
Article
Materials Science, Multidisciplinary
Ashwin Kumar Saikumar, Sreeram Sundaresh, Shraddha Dhanraj Nehate, Kalpathy B. Sundaram
Summary: In this study, thin films of CuGa2O4 were deposited for the first time using RF magnetron-sputtering technique and post-deposition annealed at varying temperatures. Structural and morphological studies revealed an increase in grain size and decrease in optical transmission with increasing annealing temperature. The optical bandgap value also showed an increasing trend with annealing temperature.
Article
Engineering, Electrical & Electronic
I. Riahi, B. Khalfallah, F. Chaabouni
Summary: In this study, the radiofrequency magnetron sputtering method was used to deposit ZnSnO3 thin films with good crystallinity and optical transparency by controlling the substrate temperature. Characterization studies revealed that the deposition temperature significantly influenced the structure, morphology, and electrical properties of the films.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Reza Shakoury, Ali Arman, Sadegh Miri, Mohsen Mardani, Sahar Rezaee, Arash Boochani, Ghasem Amraee Rad, Khalil Sherafat
Summary: This study investigates the effect of deposition temperature on the surface morphology of zirconium dioxide layers using surface parameters obtained from atomic force microscopy analysis. The optical spectra transmission and transparency of the samples are also obtained.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Saheer Cheemadan, M. C. Santhosh Kumar
Summary: This study deposited CdO:ZnO composite thin films with varying compositions on glass substrates using RF magnetron sputtering. The optoelectronic characteristics of the films and their dependence on substrate temperature were investigated. The structural, electrical, morphological, and optical properties of the films were analyzed using various techniques. The results showed that all films had an average optical transmittance above 80% in the visible range, regardless of the deposition temperature and composition. The CdO:ZnO (70:30) composite thin films deposited at 200℃ exhibited the lowest electrical resistivity and a high carrier concentration. Increasing the substrate temperature from room temperature to 200℃ resulted in an increase in carrier mobility. The energy band gap values of the films were calculated based on the transmittance spectra.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Li-Ping Peng, A-Ling He, Liang Fang, Xiao-Fei Yang
Summary: High conductive and transparent indium-doped zinc oxide (IZO) thin films were successfully deposited on glass substrates using radio-frequency magnetron sputtering at low temperature. The influence of deposition pressure on the properties of the films was significant, and the film deposited at 2.0 Pa showed the best performance.
Article
Chemistry, Physical
Bryan Horcholle, Christophe Labbe, Xavier Portier, Philippe Marie, Cedric Frilay, Weiqiang Yuan, Wojciech Jadwisienczak, David Ingram, Clara Grygiel, Julien Cardin
Summary: Undoped and doped Nb2O5 thin films were successfully deposited on silicon wafer using sputtering technique and annealed to investigate their chemical, structural, optical, and photoluminescent properties. The study revealed the stoichiometry, phase transformations, refractive index, and electronic properties evolution of the films with annealing temperature and Tb3+ ion content. Raman spectra analysis confirmed the structural evolution, while the correlation between photoluminescence and electronic properties was highlighted.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
S. Satapathy, P. K. Siwach, H. K. Singh, R. P. Pant, K. K. Maurya
Summary: Researchers have successfully grown Yttrium iron garnet (YIG) thin films at room temperature using both pulsed laser deposition (PLD) and radio frequency (RF) sputtering techniques. The films exhibit single-phase growth and epitaxial nature. Although they have lower magnetic performance, they show a promisingly small interfacial dead layer thickness, which is beneficial for spin transport applications.
Article
Chemistry, Physical
Joanna Banas-Gac, Marta Radecka, Adam Czapla, Edward Kusior, Katarzyna Zakrzewska
Summary: Thin film bilayers of TiO2/CuO with intentionally varied thickness of the top layer of TiO2 were characterized using various techniques. It was found that CuO bottom layer crystallized in a monoclinic structure while TiO2 top layer remained amorphous. The film roughness of CuO decreased with increasing thickness of TiO2 layer. X-ray absorption spectroscopy revealed the presence of Cu+ and Cu2+ in TiO2 top layer. Photoelectrochemical measurements showed that the TiO2/CuO bilayers acted as photocathodes in water splitting, with photocurrent density increasing with increasing TiO2 layer thickness.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Chunhu Zhao, Junfeng Liu, Yixin Guo, Yanlin Pan, Xiaobo Hu, Guoen Weng, Jiahua Tao, Jinchun Jiang, Shaoqiang Chen, Pingxiong Yang, Junhao Chu
Summary: The study optimized aluminum doped ZnO thin films using RF magnetron sputtering, achieving high-quality optical and electrical properties. The optimized films demonstrated excellent optical and electrical characteristics at low resistivity, making them suitable as front contact layers in solar cell applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Jose de Jesus Araiza, Leo Alvarez-Fraga, Raul Gago, Olga Sanchez
Summary: Hafnium oxide films were deposited on sapphire and silicon (100) substrates using the DC reactive magnetron sputtering technique from a pure hafnium target at different discharge power levels. The influence of the cathode power on the composition, structure, morphology, and optical properties of the films was investigated. The results showed that the films had increased crystalline content and oxygen-rich composition with higher sputtering power, and exhibited mound morphologies on the surface.
Article
Chemistry, Physical
D. A. Granada-Ramirez, A. Pulzara-Mora, C. A. Pulzara-Mora, A. Pardo-Sierra, A. Cardona-Bedoya, M. Perez-Gonzalez, S. A. Tomas, S. Gallardo-Hernandez, J. G. Mendoza-Alvarez
Summary: InGaN thin films were deposited on silicon substrates using RF magnetron sputtering, and the In content was controlled by adjusting the substrate temperature. The optical and structural properties of the films were analyzed, and it was found that the band gap energy increased with temperature.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Mehmet Ali, Ozlem Duyar Coskun
Summary: Electrochromic materials offer sustainable and innovative solutions for EC devices, smart windows, and optoelectronic applications. By applying voltage, the optical transmissions of these materials can be modulated. Achieving high optical modulation and coloration efficiency is crucial for EC devices on solid and flexible substrates. This study investigates the effects of deposition pressure on the structural, optical, and electrochromic properties of WO3 films deposited on flexible PET substrates. The results show that increasing the deposition pressure improves the coloration efficiency of the WO3 films, and there is an optimal oxygen to argon partial pressure ratio for improved EC properties.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Chemical
D. Muhammad, Z. Ahmad, N. Aziz
Summary: This study explores the application of state space model predictive control (SS-MPC) in controlling LDPE polymerization tubular reactor process and shows that MPC is more effective in handling polymer grade transition and disturbance rejection compared to PID controller.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Review
Materials Science, Biomaterials
Mohsen Ahmadipour, Hossein Mohammadi, Ai Ling Pang, Mohammad Arjmand, Tunmise Ayode Otitoju, Patrick U. Okoye, Beerelli Rajitha
Summary: This review discusses the influence of silicate ceramics on the mechanical, cytocompatibility, and bioactivity properties of polymer-based scaffolds for potential application in bone tissue engineering.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2022)
Review
Engineering, Chemical
Rasheed O. Kelani, Zainal Ahmad, Dipesh Patle
Summary: This paper provides an overview of studies on mechanistic model-based control of biodiesel production process, focusing on control strategies such as plantwide control, model predictive control, and optimal control. It is found that there is limited application of advanced control strategies in the biodiesel production process, especially within the plantwide control framework. Decentralized plantwide control using a heuristic-based method and simulations is currently being employed to improve the performance of biofuel production. The review highlights the need for a simple, effective, and easily implementable plantwide design control for achieving optimal profitability, controllability, and safety.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Polymer Science
Ai Ling Pang, Agus Arsad, Mohsen Ahmadipour, Azrul Azlan Hamzah, Muhammad Abbas Ahmad Zaini, Rahmat Mohsin
Summary: In this study, PPy-MWCNTs nanocomposites were synthesized using the ultrasonic-assisted in-situ chemical polymerization route, and the impact of MWCNTs on the properties of PPy was investigated. The results showed that the addition of MWCNTs increased the crystallinity of PPy and improved the photocatalytic activity of PPy-MWCNTs nanocomposites.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Engineering, Multidisciplinary
Nur'Aishah Ahmad Shahrim, Norshahida Sarifuddin, Ahmad Zahirani Ahmad Azhar, Hafizah Hanim Mohd Zaki
Summary: Traditional petroleum-based plastics have caused environmental problems. In this study, researchers extracted starch from mango seeds to produce biodegradable starch films. After conducting soil burial tests, it was found that the cross-linked starch films degraded slower than the non-cross-linked ones, indicating their biodegradability in soil. Moreover, this plastic packaging, made from waste materials, is environmentally friendly.
IIUM ENGINEERING JOURNAL
(2022)
Review
Chemistry, Organic
Muslim Darbi Abdurrahman, Ai Ling Pang, Agus Arsad, Radzuan Junin, Muhammad Irtin Syariefudin, Shania Regina, Ully Zakyatul Husna, Mohsen Ahmadipour
Summary: Polymer flooding is an effective chemical method for enhanced oil recovery (EOR) in the early stages of water flooding. Synthetic polymers are susceptible to brine formation and high temperatures, while biopolymers have higher resistance to high temperatures and salinity.
PETROLEUM CHEMISTRY
(2022)
Article
Engineering, Chemical
Hafiz Gadafi Abdul Aziz, Boon Seng Ooi, Abdul Latif Ahmad, Zainal Ahmad, Mohd Azmier Ahmad, Choe Peng Leo
Summary: This study successfully improved the removal of phosphate by producing and modifying calcium carbonate nanoparticles. The incorporation of iron increased the surface area of CaCO3, resulting in significantly enhanced phosphate removal. CaCO3-Fe exhibited different adsorption behavior for phosphate compared to traditional pH-responsive materials.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Materials Science, Biomaterials
P. C. Sivanathan, Kai Shen Ooi, Muhammad Aniq Shazni Mohammad Haniff, Mohsen Ahmadipour, Chang Fu Dee, Norfilza Mohd Mokhtar, Azrul Azlan Hamzah, Edward Y. Chang
Summary: Beta-2-microglobulin (beta M-2) is widely used to detect and evaluate various diseases due to its important role in the human immune system and kidney function. Recent studies have shown that biosensors can be used for simple, rapid, and reliable quantification of beta M-2, overcoming the limitations of sophisticated detection methods.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2022)
Review
Engineering, Electrical & Electronic
Mohsen Ahmadipour, Ai Ling Pang, Mohammad Rezaei Ardani, Swee-Yong Pung, Poh Choon Ooi, Azrul Azlan Hamzah, M. F. Mohd Razip Wee, Muhammad Aniq Shazni Mohammad Haniff, Chang Fu Dee, Ebrahim Mahmoudi, Agus Arsad, Muhammad Zamharir Ahmad, Ujjwal Pal, Khaled M. Chahrour, Seyyed Arash Haddadi
Summary: Currently, analyzing the acetone concentration in exhaled breath has become an appealing and non-invasive approach for detecting diabetes mellitus. With the advancements in gas sensors, this method shows potential for clinical applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Farhad Ahmadijokani, Salman Ahmadipouya, Mahdi Heidarian Haris, Mashallah Rezakazemi, Awais Bokhari, Hossein Molavi, Mohsen Ahmadipour, Swee-Yong Pung, Jiri Jaromir Klemes, Tejraj M. Aminabhavi, Mohammad Arjmand
Summary: The magnetization of UiO-66-NH2 is a promising approach for the separation of used MOFs in water treatment. A two-step postmodification procedure using TCT and PTZ agents enhances the adsorption performance of the magnetic nanocomposite. The m-UiO-66-TCT composite exhibits high adsorption capacity and easy separation using an external magnet.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Ai Ling Pang, Muhammad Saqlain Iqbal, Nik Akmar Rejab, Ujjwal Pal, Muhammad Aniq Shazni Mohammad Haniff, Ahmad Ghadafi Ismail, Azrul Azlan Hamzah, Mohsen Ahmadipour
Summary: The study focuses on the influence of calcination temperature on the features and photocatalytic performance of sol-gel synthesized CaCu3Ti4O12 nanoparticles. Characterization of the nanoparticles was done using various methods to examine their structure, composition, morphology, and optical properties. Photodegradation of a cationic dye was used to evaluate the photocatalytic performance. Results showed that calcination improved the crystallinity and reduced the optical bandgap energy of the nanoparticles, leading to enhanced photocatalytic activity. The sample calcined at 900 degrees C demonstrated the highest photodegradation efficiency and excellent recyclability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Chandra Shobha Vennapoosa, Sagar Varangane, Spandana Gonuguntla, B. Moses Abraham, Mohsen Ahmadipour, Ujjwal Pal
Summary: This study successfully integrates zeolitic imidazolate frameworks (ZIFs-67) with the CuFe-LDH composite, forming a novel hybrid nanostructure. The resulting photocatalyst exhibits remarkable performance in photocatalytic hydrogen evolution and carbon dioxide conversion to methanol, with superior activity and long-term stability.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Nadhem Missaoui, Amani Chrouda, Hamza Kahri, Andrew J. Gross, Mohammad Rezaei Ardani, Ai Ling Pang, Mohsen Ahmadipour
Summary: A new polyethylene glycol templated synthesis method was used to obtain nanocrystalline zeolitic imidazolate framework (n-ZIF-67) with excellent properties and high CO2 gas selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ramsha Iftikhar, Iqra Parveen, Aqsa Mazhar, Muhammad Saqlain Iqbal, Ghulam Mustafa Kamal, Freeha Hafeez, Ai Ling Pang, Mohsen Ahmadipour
Summary: The presence of heavy metal ions in water bodies poses great risks to human health, aquatic life, and environmental sustainability. Small organic molecule-based sensors have the ability to detect different metal ions, making them valuable for heavy metal sensing. This review article explores the recent advances in fluorescent sensors for heavy metal detection in water bodies, discussing their preferences, mechanisms, and detection limits. By addressing the limitations and challenges of existing probes, this comprehensive review provides insights for the future development of efficient and selective sensors for heavy metal detection.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Omar Fawzi Suleiman Khasawneh, Puganeshwary Palaniandy, Mohsen Ahmadipour, Hossein Mohammadi, Mohammad Razak Bin Hamdan
Summary: Acetaminophen (ACT) is an environmental contaminant that poses a threat to human health and aquatic life. Conventional wastewater treatment methods are ineffective in removing ACT, necessitating the use of advanced oxidation processes. By synthesizing Fe2O3-TiO2 nanocomposites, the surface area was increased, particle size reduced, optical properties enhanced, and the bandgap decreased, resulting in improved photocatalytic degradation of ACT.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
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)
