Article
Materials Science, Multidisciplinary
Bin Wang, Huijie He, Hanjing Hao, Peng Li, Hairui Cai, Fanfan Shang, Bei An, Xiaoqian Li, Shengchun Yang
Summary: A facile method was developed to introduce P atoms into g-C3N4 via thermal calcination treatment, resulting in P-CN(PPh3) with improved light absorption and negative shift of the conduction band edge compared to pristine g-C3N4. The introduction of P element also enhances charge separation and significantly accelerates the photocatalytic hydrogen production rate.
Article
Chemistry, Multidisciplinary
Yang Yang, Min Lai, Jialei Huang, Jinze Li, Ruijie Gao, Ziming Zhao, Huatang Song, Jixiang He, Yan Ma
Summary: Bi5O7I/g-C3N4 p-n junctioned photocatalysts were synthesized by alcohol-heating and calcination in air, showing superior photocatalytic activity and stability. Compared with pure BiOI, Bi5O7I, and g-C3N4, the composite exhibited higher efficiency in the photodegradation of Rhodamine B and tetracycline hydrochloride.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Hongmiao Zhou, Ruolin Chen, Changcun Han, Pan Wang, Zhengfu Tong, Baohua Tan, Yizhong Huang, Zhifeng Liu
Summary: In this study, copper phosphide loaded g-C3N4 catalysts showed superior performance in photocatalytic hydrogen evolution, providing a new strategy for designing efficient visible-light-driven hydrogen evolution photocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Tingcha Wei, Juan Xu, Caixia Kan, Le Zhang, Xingzhong Zhu
Summary: The study focuses on the construction of a g-C3N4/TiO2 heterostructure with tailored Au nanoparticles for efficient charge separation in photocatalysis. The enhanced charge separation leads to excellent photocatalytic activity for pollutant degradation and water splitting, with superoxide radicals identified as playing a crucial role in the catalytic process. Insights into the distinct roles of Au in heterostructure for significantly enhanced charge separation are provided, paving the way for the design of high-efficiency heterostructure photocatalysts with noble metal decoration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zhaobo Fan, Yafeng Liu, Xin Guo, Zhiliang Jin
Summary: Photocatalytic water splitting for hydrogen production is essential for solving the energy crisis. In this study, benzene-ring grafted g-C3N4 nanotubes (Ph-g-C3N4) were combined with CdSe nanoparticles to achieve efficient hydrogen production. The addition of CdSe nanoparticles improved the stability and absorbance of the catalytic system. The constructed composites catalyst exhibited low resistance, efficient electron separation, and enhanced electron transfer, leading to a highly efficient hydrogen evolution reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Ruifeng Du, Baoying Li, Xu Han, Ke Xiao, Xiang Wang, Chaoqi Zhang, Jordi Arbiol, Andreu Cabot
Summary: The combination of ultrathin 2D g-C3N4 nanosheets and TiO2 nanoparticles through electrostatic self-assembly method can achieve outstanding photocatalytic performance with effective charge separation and transport properties, leading to significantly enhanced hydrogen evolution activity.
Article
Chemistry, Physical
Min Zhang, Yinyi Guan, Yunyuan Dong, Jianming Liao, Xiaobin Chen, Hongfei Yin
Summary: The MnxCd1_xIn2S4 solid solutions with tunable band edge positions were fabricated to enhance the separation efficiency of charge carriers in photocatalytic reactions. The Mn0.5Cd0.5In2S4/g-C3N4 nanocomposites exhibit superior performance and a type-II heterojunction photocatalytic mechanism is proposed to explain the transfer path of charge carriers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Renji Rajendran, Shanmugam Vignesh, Asokan Sasireka, Palanisamy Priya, Sanjeevamuthu Suganthi, Vairamuthu Raj, Jeyaperumal Kalyana Sundar, Manickam Srinivasan, Mohd Shkir, S. AlFaify
Summary: This study developed highly efficient and recyclable ternary nanocomposite photocatalysts, which significantly improved the degradation efficiency of dyes and exhibited good reusability. The heterostructure formation among components enhanced the visible-light absorption capability and charge separation efficiency, leading to improved photocatalytic performance for dye polluted wastewater treatment.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Renji Rajendran, Shanmugam Vignesh, Asokan Sasireka, Sanjeevamuthu Suganthi, Vairamuthu Raj, P. Baskaran, Mohd Shkir, S. AlFaify
Summary: An Ag2O modified g-C3N4/TiO2 ternary catalyst with a narrow bandgap and enhanced photocatalytic performance was successfully prepared in this study. The catalyst showed excellent stability and reusability under visible light exposure. The superior photocatalytic performance was attributed to the synergistic heterostructured formation and effective interfacial electron separation/transfer among the composites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Syed Ul Hasnain Bakhtiar, Amir Zada, Fazal Raziq, Sharafat Ali, Muhammad Ishaq Ali Shah, Muhammad Ateeq, Muhammad Khan, Dang Alei, Perveen Fazil, Mohammad Naeem, Waliullah Khan, Javed Ali Khan, Ruqia Nazir, Wen Dong, Qiuyun Fu
Summary: In this study, the high charge conductivity and wide range solar light absorption of metal phthalocyanines were utilized for enhanced photocatalysis. Graphitic carbon nitride was synthesized from melamine and loaded with zinc phthalocyanine to form ZPCN nanocomposites. These nanocomposites demonstrated exceptional catalytic activity in liberating hydrogen and decomposing a pollutant under visible-light irradiation, which is attributed to the efficient generation of superoxide ions and holes through charge transfer between g-C3N4 and ZnPc.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Sijia She, Xiaoyue Zhang, Xiaoyong Wu, Jun Li, Gaoke Zhang
Summary: The successful synthesis of a 2D/2D g-C3N4/NaBiO3.2H2O (CN/NBO) heterojunction photocatalyst for CO2 photoreduction demonstrates its excellent performance in high separation efficiency of photogenerated carriers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Juntao Yan, Bo Chai, Yanyu Liu, Guozhi Fan, Guangsen Song
Summary: In this study, 3D/2D ZnFe2O4/g-C3N4 heterojunctions were successfully prepared and used as efficient catalysts for the photo-Fenton degradation of tetracycline hydrochloride. Various characterization techniques were employed to examine the properties of the catalysts. The ZFO/NCN-2 heterojunction showed the best catalytic activity, with a degradation efficiency of 94.4% in 40 minutes. The involvement of different active species and the charge transfer route were confirmed through experiments and calculations. The excellent photo-Fenton activity was attributed to the effective charge separation and accelerated Fe3+/Fe2+ cycles. The degradation pathways of tetracycline hydrochloride were proposed based on HPLC-MS analysis.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Chaoyang Sun, Jingkai Yang, Yan Zhu, Min Xu, Yan Cui, Lu Liu, Wangwei Ren, Hongli Zhao, Bo Liang
Summary: An efficient 0D SnO2 nanoparticles/2D g-C3N4 nanosheets heterojunction was successfully constructed by electrostatic self-assembly for high-performance photocatalytic degradation of Rhodamine B. The heterojunction established a built-in electric field to promote charge separation, increasing electron transfer efficiency, and utilizing photocatalysis for organic dye degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Daochuan Jiang, Taotao Wang, Muqing Chen, Jinbao Wu, Pingwu Du
Summary: Accelerating charge separation and transfer and increasing visible light absorption are crucial for efficient photocatalytic hydrogen production via water splitting. In this study, we fabricated an in-plane graphited nanocarbon-conjugated polymeric carbon nitride (GNC-C3N4) nanosheet heterostructure photocatalyst for the first time. The incorporation of GNC into the conjugate network of C3N4 significantly enhanced light harvesting and improved charge separation and transfer through the built-in electric field and intimate interface. The optimized GNC-C3N4 photocatalyst exhibited over 15-fold enhancement in photocatalytic hydrogen evolution from water under visible light irradiation compared to C3N4.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Shahid Iqbal, Adnan Amjad, Mohsin Javed, M. Alfakeer, Muhammad Mushtaq, Sameh Rabea, Eslam B. Elkaeed, Rami Adel Pashameah, Eman Alzahrani, Abd-ElAziem Farouk
Summary: A simple technique for producing zinc ferrite nanoparticles (ZnFe2O4 NPs) with varying quantities of sulphur doped graphitic carbon nitride nanocomposites (ZnFe2O4/S-g-C3N4 NCs) has been described in this study. The photo-catalytic activity of the produced nanoparticles and nanocomposites was examined using various techniques, and it was found that ZnFe2O4/S-g-C3N4 NCs exhibited superior photocatalytic behavior due to synergic effects. In addition, these nanocomposites showed promise as antibacterial agents.
FRONTIERS IN CHEMISTRY
(2022)
Article
Computer Science, Artificial Intelligence
Jianjun Chu, Xiaoshan Yu, Shangshang Yang, Jianfeng Qiu, Qijun Wang
Summary: This paper proposes an evolutionary algorithm for neural network architecture search, introduces a novel indicator to measure population diversity, and suggests effective sampling and encoding strategies to optimize the search process. Experimental results demonstrate that the proposed method outperforms existing comparison methods.
COMPLEX & INTELLIGENT SYSTEMS
(2023)
Article
Business
Qiqi Wang, Xueling Fan, Jun Liu, Wenjing Cai
Summary: This study explores the shift of roles from help giver to help seeker among employees by investigating their help-giving and following help-seeking behavior. The study proposes two contradictory psychological processes, consistency and licensing, for employees to determine whether to seek help after giving help. The study differentiates between autonomous help-seeking and dependent help-seeking and suggests that help-giving has a stronger effect on dependent help-seeking. Leader respect is identified as a moderator to solve the opposite effects of help-giving on subsequent help-seeking. The results show that the negative (positive) relationship between help-giving and dependent help-seeking is mediated by personal reputation and reputation maintenance concerns, while the results regarding autonomous help-seeking are inconsistent. Leader respect weakens the positive relationship between help-giving and autonomous help-seeking in one study and strengthens the negative relationship in two studies. The study discusses theoretical implications for helping literature, self-regulation theory, and moral behavior research.
JOURNAL OF BUSINESS ETHICS
(2023)
Article
Chemistry, Multidisciplinary
Wei Liu, Shi-ou Zhu, Yu-lin Guo, Long-fang Tu, Yong-qi Zhen, Rong-yan Zhao, Liang Ou-Yang, Hiroshi Kurihara, Rong-Rong He, Bo Liu
Summary: Amyotrophic lateral sclerosis (ALS) is a common fatal neurodegenerative disease. The ULK1 activator BL-918 has shown therapeutic potential in treating ALS by inducing cytoprotective autophagy. This study provides further evidence of autophagic dysfunction in ALS pathogenesis.
ACTA PHARMACOLOGICA SINICA
(2023)
Article
Mathematics, Applied
Ting Li, Changying Liu, Bin Wang
Summary: In this paper, one-stage explicit trigonometric integrators for solving quasilinear wave equations are formulated and studied. The trigonometric integrators are used as the semidiscretization in time, while a spectral Galerkin method is employed for the discretization in space. It is shown that these integrators have second-order convergence in time and the result holds for the fully discrete scheme without requiring any CFL-type coupling.
Article
Chemistry, Physical
Feihan Yu, Wenxuan Wang, Yudong Li, Minshu Du, Feng Liu, Daxin Liang
Summary: A Fe species (Fe, Fe2O3)/TiO2 catalyst was designed to utilize photogenerated charges and holes, achieving high degradation rate and methane generation. It overcomes the limitations of TiO2 and shows great potential for application.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Thermodynamics
Dong Zhang, Haochun Zhang, Qi Wang, Wenbo Sun
Summary: This study investigates the entropy generation and thermal irreversibility analysis of liquid lead-bismuth eutectic (LBE) in an annular pipe. Computational fluid dynamics (CFD) technique is used to study the convective heat transfer performance. The results indicate that the best thermodynamic performance occurs under parabolic distributed heat flux.
JOURNAL OF THERMAL SCIENCE
(2023)
Article
Engineering, Aerospace
Zongyu Zhang, Qinghua Zeng, An Wang, Hongfu Wang
Summary: A model predictive control (MPC)-based compound control algorithm is proposed to suppress the anti-regulation characteristics of variable flow ducted rockets. A mathematical model is developed to analyze the anti-regulation, and a fused feedback variable is constructed to accurately predict the gas flow and the anti-regulation. Experimental results demonstrate that the proposed method achieves superior performance compared to previous methods in balancing the response rate and the anti-regulation of gas flow systems.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
De-Zhi Chen, Qi Wang, Rui-Run Chen, Shu Wang, Yan-Qing Su, Heng-Zhi Fu
Summary: Five Nb-16Si-20Ti-xMgO alloys were prepared, and the effect of MgO addition on their phase composition, microstructure evolution, and mechanical properties was examined. The results showed that MgO reacted with the Nb-Si-Ti alloy, leading to the substitution of Nb atoms by Mg atoms in the Nbss phase. The addition of 3.0 at% MgO transformed the hypoeutectic alloy into a hypereutectic alloy and resulted in a fine Nbss/alpha-Nb5Si3 eutectic structure. The Nb-16Si-20Ti-3MgO alloy exhibited the highest fracture toughness and compressive strength due to its Nbss phase content and Nbss/alpha-Nb5Si3 eutectic structure.
Article
Neurosciences
Hui-xian Yu, Si-hao Liu, Zhao-xia Wang, Chang-bin Liu, Pei Dai, Da-wei Zang
Summary: The study found that botulinum toxin type A injection can improve gait and posture control in patients with lower-limb spasticity post-stroke. It also improves motor functions and forefoot pressure in these patients.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Engineering, Aerospace
Hongfu Wang, Qinghua Zeng, An Wang, Zongyu Zhang, Weide Liu
Summary: This paper investigates the fault detection and isolation of pressure sensors in gas generators with double pressure feedback. Firstly, a Consistency Index is constructed based on the Principal Component Analysis (PCA) algorithm to evaluate the consistency of measured values. Secondly, the redundancy information of the system is used to estimate the pressure in the gas generator using Kalman's principle. Finally, the gap metric between measured pressure and estimated pressure is employed to characterize the health of the sensors.
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2023)
Article
Polymer Science
Guanghui Yang, Xin Ji
Summary: GF/MoS2/PTFE composites were produced with different molding pressures (50-70 MPa), and their mechanical and tribological properties were evaluated. The results showed that the properties of the composites varied depending on the molding pressure. At a molding pressure of 50 MPa, the composites displayed the best mechanical properties. The lowest wear rate and friction coefficient were observed at molding pressures of 60 MPa and 70 MPa, respectively. SEM analysis suggested that increased molding pressure led to greater residual stresses and surface furrows.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Engineering, Mechanical
Changlin Liu, Suet To, Xuexiang Sheng, Jianfeng Xu
Summary: This paper explores the formation mechanism of crystal defects in single-crystal silicon during elliptical vibration cutting (EVC) using molecular dynamics simulation. The study finds that the cutting stage in EVC greatly influences the surface morphology, including elastic recovery and side flow. The preferred slip motion during subsurface damage formation is distinct in the extrusion and shear stage. The influence of cutting temperature and speed on crystal defects formation is also investigated, revealing the increase in proportion of Shockley partial dislocations at elevated temperature and the suppression of crystal defects generation with higher speed ratio.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Computer Science, Interdisciplinary Applications
Changying Liu, Jiayin Li, Zhenqi Yang, Yumeng Tang, Kai Liu
Summary: In this paper, an energy-preserving collocation integrator is derived for solving hyperbolic Hamiltonian systems. Two specific high-order energy-preserving and symmetric integrators are presented by choosing collocation nodes as two and three Gauss-Legendre points, respectively. The convergence and symmetry of the constructed energy-preserving integrators are rigorously analyzed. Numerical results confirm the energy conservation property and accuracy of the proposed integrators.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2023)
Article
Chemistry, Analytical
Rui Zhang, Jing Zhang, Qiqi Wang, Hehe Zhang
Summary: This paper proposes a DOIDS (Opportunistic Routing Intrusion Detection Scheme) based on the DBSCAN clustering algorithm for detecting routing attacks in UWSNs. By collecting energy consumption, forwarding, and link quality information as feature values and using the DBSCAN clustering algorithm to detect potential abnormal nodes. Finally, a decision function is defined according to the time decay function to determine whether the potential abnormal node is malicious.
Article
Green & Sustainable Science & Technology
Zihua Yin, Xi Lu, Shi Chen, Jiaxing Wang, Jie Wang, Johannes Urpelainen, Rachael Marie Fleming, Ye Wu, Kebin He
Summary: Electrification and power decarbonization are important for low-carbon energy transition, but their combined effects on CO2 emissions have not been fully understood. This study uses the LMDI model to analyze the effects of electrification and power decarbonization on CO2 emissions in China, the U.S., and the EU between 1997 and 2020. The results show that electrification and power decarbonization played a significant role in reducing CO2 emissions in these regions. However, there are differences in the driving factors of electrification and power decarbonization across the three regions. The study also suggests measures to accelerate electrification in the U.S. and the EU to achieve their 2030 climate targets.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(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)
