Article
Physics, Condensed Matter
Khadijah S. Al-Namshah, Mohd Shkir, Fatma A. Ibrahim, Mohamed S. Hamdy
Summary: In this study, pure ZnO and Co doped ZnO nanoparticles were successfully synthesized using flash combustion synthesis technique, and their properties were analyzed using various characterization techniques. The results showed that the Co doping enhanced the photocatalytic activity and affected the band gap and absorption spectrum of ZnO. The best performing sample was found to be 5 wt% Co doped ZnO with a rate constant 2.6 times higher than that of bare ZnO in the decolourization reaction.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Aditi Bisht, Biswarup Satpati, Satyabrata Mohapatra
Summary: Ce-doped ZnO nanospindles synthesized through a simple wet chemical method exhibit enhanced photocatalytic activity for the degradation of toxic pollutants under sunlight exposure. The improved performance is attributed to effective separation of photoinduced charge carriers, and the catalysts show good recyclability and stability for potential applications in environmental remediation.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
M. Kumar, Mohinder Singh Chauhan, M. Shaheer Akhtar, Ahmad Umar
Summary: Nanostructured ZnO doped with different Ce precursor concentrations were prepared and tested for photocatalytic and chemical sensing performances. Blue-shift was detected in 5 mol% Ce doping, which was found to be the optimum concentration for achieving the maximum dye degradation and sensing performances. Facile redox couple Ce3+/Ce4+ improved charge separation, leading to increased catalytic and PA sensing performances.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
N. M. Alatawi, L. Ben Saad, L. Soltane, A. Moulahi, I Mjejri, F. Sediri
Summary: This study reports the controlled synthesis of nanostructured undoped and Cu-doped ZnO using a simple one-step hydrothermal treatment, and evaluates the effects of different Cu doping concentrations on optical and photocatalytic properties. The results show that doping with a suitable concentration of Cu can effectively inhibit the recombination of free charge carriers and enhance the photocatalytic activity.
Article
Crystallography
Samer H. Zyoud, Vanga Ganesh, Che Azurahanim Che Abdullah, Ibrahim S. Yahia, Ahed H. Zyoud, Atef F. I. Abdelkader, Malek G. Daher, Mohamed Nasor, Moyad Shahwan, Heba Y. Zahran, Mahmoud S. Abd El-sadek, Elbadawy A. Kamoun, Saleh M. Altarifi, Mohamed Sh. Abdel-wahab
Summary: This study synthesized pure and Ni-doped (1%, 2%, and 3%) nanostructures using a novel laser-assisted chemical bath synthesis technique. Various analysis methods were used to characterize the samples and demonstrate their excellent photocatalytic performance.
Article
Chemistry, Physical
Rizhao Ou, Zexin Zeng, Xutao Ning, Bin Zeng, Chaofu Wu
Summary: A sandwich-type hybrid consisting of N-doped ZnO/N-doped graphene/N-doped ZnO was successfully fabricated via solution reaction and carbonization, showing excellent photocatalytic performance. The sandwich-type structure provides plenty of active sites and facilitates effective photoinduced electron-hole separation. This strategy offers an effective method to prepare such sandwich-structured composites for photocatalysis or energy storage.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: We demonstrate a facile fabrication of Ce doped ZnO nanowires with outstanding photodegradation performance by thermal decomposition route. The impact of cerium doping on structure, optical and photodegradation behavior of ZnO nanowires was investigated. The results showed that ZnO nanowires doped with 0.5% Ce exhibited excellent photodecolorization performance and high efficiency in dye removal under sunlight exposure.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Chaitali Jagtap, Rohan Kapale, Pooja More, Vishal Kadam, Amir Al-Ahmed, Thamraa Alshahrani, Firoz Khan
Summary: Chemically synthesized ZnO and Tin-doped ZnO nanoparticles were prepared using the reflux method. The photocatalytic activity of the Tin-doped nanoparticles in reducing environmental pollutants was investigated. The bandgap of ZnO nanoparticles was determined to be 3.2 eV, and Tin doping did not affect the morphology of the photocatalysts. X-Ray Diffraction, Scanning Electron Microscope, Electron Dispersion Spectroscopy, and UV-visible spectroscopy were used to analyze the optical, morphological, and structural properties. The study found that doping ZnO with 5% and 10% Tin enhanced the photocatalytic activity, as evidenced by a reduction in degradation time for the Rose Bengal dye.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Hafeez Ullah, Waleed Zaman, Muhammad Ijaz, Muhammad Siyar, Saeed Ullah, Raed H. Althomali, Mohammed A. Assiri, Sana Ullah Asif
Summary: In this study, facile and homogenous undoped and Cr-doped SnO2 nanoparticles were successfully synthesized using an effective chemical assist sonochemical method. The structural, optical, and chemical behavior of the synthesized nanoparticles were examined using various characterization techniques. The results showed that the synthesized nanoparticles had high crystallinity, rutile phase, and uniform morphology. The optical band gap was found to increase with the addition of Cr, and the gas sensing characteristics of the nanoparticles were higher than reported in the literature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Bharati Debi Biswas, Moushumi Dutta Purkayastha, Ekta Tiwari, Shanku Denrah, Mitali Sarkar, Gopala Krishna Darbha, Tapas Pal Majumder
Summary: Manganese doped zinc oxide (MZ) nanocomposites with excellent photocatalytic activity were synthesized using co-precipitation method, and effectively degraded toxic organic dye under light irradiation. Among different molar ratios of Mn/Zn, MZ3 (1:25) nanocomposites exhibited the best photocatalytic activity, attributed to its high surface area and reaction rate.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Velumani Arun, Velu Manikandan, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Arumugam Priyadharsan, Ramesh K. A. Kumar, Palanisamy Maadeswaran
Summary: Metal sulfide-semiconductor nanocomposites synthesized with well-defined tin metal exhibit high efficiency in the photocatalytic reduction of Reactive Blue 160 under solar light irradiation, showing great potential in applications such as solar cells and wearable electronics.
Article
Optics
M. Neelima, S. Vandana, A. Kathirvel, M. Sivakumar, A. Uma Maheswari
Summary: This study investigates the visible-light-induced photocatalytic activity of V2O5 nanostructures doped with various amounts of Ti. The results show that a dopant concentration of 5% enhances the photocatalytic activity of V2O5.
Article
Materials Science, Ceramics
Manoj Kumar, Ganesh Singh, M. S. Chauhan
Summary: Single-phase wurtzite hexagonal ZnO:Eu3+ nanoparticles were successfully synthesized through a facile co-precipitation method, with 5% doping exhibiting the highest catalytic efficiency. The samples showed improved photocatalytic performance for dye degradation under UV illumination compared to pure ZnO, and also exhibited weak ferromagnetic behavior.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Mohadeseh Yarahmadi, Hossein Maleki-Ghaleh, Masoud Emami Mehr, Ziba Dargahi, Fatemeh Rasouli, M. Hossein Siadati
Summary: Doping zinc oxide with strontium improved its photocatalytic activity, with the best performance observed at 3% strontium doping. The band gap of the photocatalyst decreased from 3.34 to 3.17 eV, leading to a significant increase in the degradation of methylene blue dye.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Keyue Wu, Li Zhou, Chuanlong Mao, YiJun Chu
Summary: ZnO structures were synthesized by a two-step procedure: hydrothermal method with methanol as solvent followed by annealing in air. The structure and morphology were characterized by XRD and SEM, while the chemical composition was determined by XPS. The optical properties were investigated using fluorescence spectroscopy. The results emphasize the significant influence of reaction time on the morphology, chemical composition, and optical properties of ZnO.
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)
