Article
Materials Science, Multidisciplinary
Yuanyuan Lv, Jin Liu, Zhiyong Zhang, Weihu Zhang, Anyi Wang, Feng Tian, Wu Zhao, Junfeng Yan
Summary: CuO nanoparticles-loaded ZnO nanowires arrays were synthesized chemically and showed enhanced light absorption range and higher photodegradation efficiency compared to pure ZnO nanowires, making them a promising candidate for visible light photocatalysis in wastewater treatment applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Yuan Yi, Qifang Guan, Wenguang Wang, Siyuan Jian, Hengchao Li, Liangpeng Wu, Haiyan Zhang, Chuanjia Jiang
Summary: The extensive use of organic dyes in industry has led to serious environmental problems. In this study, a recyclable carbon cloth-supported ZnO@Ag3PO4 composite with a core-shell structure was successfully prepared and showed improved photocatalytic activity and stability for the degradation of RhB under visible light irradiation.
Article
Engineering, Electrical & Electronic
Min Liu, Panpan Xu, Jincan Zhang
Summary: SnO2 nanorods and nanocone-like structures were synthesized on carbon cloth using a hydrothermal method. The field emission performance of the prepared samples was investigated. The results showed that the SnO2 nanorods/CC composites obtained with the carbon cloth naturally placed at the bottom of the reaction solution had a lower turn-on field and a higher field enhancement factor.
SOLID-STATE ELECTRONICS
(2022)
Article
Chemistry, Physical
Zhi-Kai Shen, Miao Cheng, Yong-Jun Yuan, Lang Pei, Jiasong Zhong, Jie Guan, Xinyue Li, Zi-Jian Li, Liang Bao, Xuefeng Zhang, Zhen-Tao Yu, Zhigang Zou
Summary: The study investigated the impact of smartly-designed Ni2P-black phosphorus photocatalysts on NH3 production activity. The interface Ni-P bonds between Ni2P and black phosphorus acted as atomic level electron transfer channels, reducing the potential energy barrier for charge transfer, leading to enhanced NH3 production activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Dinesh J. Ahirrao, Ajay Kumar Pal, Vikalp Singh, Neetu Jha
Summary: Nanostructured porous polyaniline has been successfully synthesized and coated on a flexible and conductive carbon cloth substrate, forming flexible electrodes for supercapacitor devices. The composite exhibited higher specific capacitance and outstanding cyclic stability compared to pure polyaniline, attributed to the synergistic effect between polyaniline and carbon cloth.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Hogyoung Kim, Myeong Jun Jung, Min Hwan Lee, Byung Joon Choi
Summary: The electrical properties of Pt/GaN Schottky diodes were studied using ZnO interlayers grown with thermal atomic layer deposition. The rectifying characteristics of the diodes were optimized with a 20-nm-thick ZnO interlayer grown at 100 degrees C. The forward current characteristics were explained by the thermionic field emission (TFE) model for growth temperatures of 80, 100, and 150 degrees C, while tunneling current became dominant at 200 degrees C. The barrier height of the diodes decreased and then increased with increasing ZnO thickness at 100 degrees C, and high interface state density led to strong tunneling current.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xuan Chen, Jin Li, Fengjuan Chen
Summary: ZnO/Bi2WO6-CC layered heterostructures photocatalysts with different loadings of Bi2WO6 were synthesized on flexible carbon clothes substrate. The Z3B-CC (3 wt% Bi2WO6) showed the best photocatalytic effect, with a photodegradation rate of methylene blue as high as 96.9% in about 100 minutes. The type II band structure formed by ZnO and Bi2WO6 contributes to the excellent photocatalytic performance of this new layered heterostructure.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Mahfoud Abdelkrim, M'hamed Guezzoul, Mahmoud Bedrouni, M'hammed Bouslama, Abdellah Ouerdane, Bachir Kharroubi
Summary: In this study, the effect of low-content cobalt doping on the properties of ZnO was investigated. The results showed that cobalt doping improved the photocatalytic efficiency of ZnO and had significant influence on its optoelectronic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Xuan Chen, Jin Li
Summary: With the increasing water pollution, the development of photocatalysts has become crucial as traditional treatments are not effective enough. This study successfully synthesized ZnO-carbon cloth (CC) and spherical ZnO/CdSe-CC heterostructures with different CdSe loadings. Z20CdSe-CC exhibited the best visible-light-responsive photocatalytic performance, with approximately 83.5% methylene blue reduced in 180 min. The synergistic effect of CdSe and CC widened the light absorption range of ZnO/CdSe-CC and promoted effective transfer of carriers, leading to an efficient photocatalytic degradation process.
Article
Chemistry, Physical
Reshalaiti Hailili, Hongwei Ji, Kaiwen Wang, Xing'an Dong, Chuncheng Chen, Hua Sheng, Detlef W. Bahnemann, Jincai Zhao
Summary: Semiconductor-based photocatalysis is a promising method for air purification by removing nitrogen oxide (NO) pollutants. However, the efficiency of photocatalytic treatment is hampered by sluggish carrier separation, catalyst deactivation, and incomplete oxidation. In this study, various ZnO structures with deliberate surface defect constructions were fabricated to address these issues. The results showed that ZnO rich in oxygen vacancies exhibited significantly enhanced NO removal efficiency and fewer toxic byproducts compared to pristine and vacancy-poor ZnO. Furthermore, the surface defects promoted not only carrier separation but also molecular oxygen activation, resulting in the generation of strong oxidant superoxide radicals and improved efficiency. Density functional theory calculations confirmed the successful adsorption and activation of NO and molecular oxygen on the defective surface, further contributing to the enhanced NO conversions.
Article
Chemistry, Physical
Limeng Yang, Wendou Chen, Cuihong Sheng, Hailiang Wu, Ningtao Mao, Hui Zhang
Summary: A novel Fe/N-codoped carbocatalyst was designed and found to be effective for PMS activation, showing good reusability and stability. The study revealed the important roles of N species and Fe-N binding in PMS activation, with carbon cloth facilitating electron transport in AOPs.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Reshalaiti Hailili, Xiaokaiti Reyimu, Zelong Li, Xu Lu, Detlef W. Bahnemann
Summary: Effective removal of dilute nitrogen oxide (NO, ppb) without NO2 emission is still challenging in environmental pollution control. The construction of photocatalysts with diversified microstructures and atomic arrangements has been found to promote NO adsorption, activation, and complete removal without secondary pollution. In this study, the microstructure of ZnO photocatalysts was regulated by altering the reaction temperature and alkalinity, resulting in enhanced NO removal and reduced NO2 yields through defect-related surface-interface aspects. Mechanistic exploitations revealed that regulated microstructures, defect-related charge carrier separation, and strengthened surface interactions contributed to improved NO removal and simultaneous avoidance of NO2 formation. This investigation sheds light on the facile regulation of microstructures and the roles of surface chemistry in the oxidation of low concentration NO in the ppb level upon light illumination.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Salini Senthil, Sabyasachi Chakraborty, Raghunathan Ramakrishnan
Summary: The study introduces an iterative high-throughput workflow for connectivity-preserving geometry optimization in automated chemical compound space explorations. Utilizing DFT and post-DFT methods, majority of problematic molecules were successfully troubleshooted, unstable molecules were identified, and candidates with ultralong bonds were determined.
Article
Chemistry, Physical
Xin Guo, Hao Ge, Zhijia Sun, Qin Zhao, Yang Tian, Daliang Liu, Qiong Wu, Xi-Ming Song
Summary: In this study, an advanced nanocomposite with abundant metal-oxygen-carbon bonds was fabricated for the first time, which can enhance the intrinsic kinetics and structural stability, and promote the electrode activity. Electrochemical tests showed that the newly prepared electrode exhibited superior long-term durability and ultrafast charging/discharging capability. This work provides a scalable approach for constructing high-performance electrode materials through interfacial regulation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Dandan Zheng, Lele Yang, Wenwen Chen, Yuanxing Fang, Xinchen Wang
Summary: The use of PCN for photoredox catalysis is innovative and promotes sustainable energy economy. By anchoring PCN on CCC, an efficient metal-free system was achieved, improving the performance of water oxidation and overall water splitting two-fold compared to powder PCN.
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)