Journal of Nanoelectronics and Optoelectronics最新文献

{"title":"Sol–Gel Engineered WO ₃ /PEDOT:PSS Nanocomposite Films with Enhanced Optoelectronic Dynamics for High-Performance Automotive Smart Windows","authors":"Lin Wang","doi":"10.1166/jno.2025.3816","DOIUrl":"https://doi.org/10.1166/jno.2025.3816","url":null,"abstract":"Current electrochromic materials face challenges in balancing conductivity, switching speed, and long-term stability for automotive applications. This study presents a novel sol–gel synthesis strategy for fabricating nanostructured tungsten oxide (WO 3 ) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) composite films. The method is based on precursor complexation regulation, where the peroxo-complexation state of tungsten is precisely controlled to moderate hydrolysis rates. The sulfonic acid groups of PEDOT:PSS provide coordination constraints, guiding the confined nucleation and uniform growth of WO 3 nanocrystals within the conductive polymer matrix. This in-situ hybridization results in a nanocomposite film characterized by continuous electron pathways and rapid ion diffusion interfaces. Comprehensive optoelectronic characterization reveals that the optimized film exhibits an optical contrast of 62.9% at 550 nm and a high coloration efficiency of 72.1 cm 2 · C −1 . The device demonstrates fast switching kinetics, with coloring and bleaching times of 3.1 s and 4.7 s, respectively. Critically, the film maintains 92% of its optical modulation after 10,000 electrochemical cycles, highlighting exceptional durability. The enhanced performance is attributed to the synergistic nano-architecture, which facilitates efficient charge transport and minimizes inter-facial resistance. These results underscore the potential of this nanocomposite film as a high-performance electrochromic material for next-generation automotive smart windows.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"20 9","pages":"980-989"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Electrical Conductivity and Optoelectronic Properties of Silica Fume-Modified Graphene Oxide Nanocomposites for Electrical Infrastructural Applications","authors":"Shijun Huang, Wei Liu, Zhiwei Liu, Xiaofan Liu, Zhangxuan Wang","doi":"10.1166/jno.2025.3771","DOIUrl":"https://doi.org/10.1166/jno.2025.3771","url":null,"abstract":"Graphene oxide (GO) and silica fume (SF) nanocomposites exhibit exceptional potential for nanoelectronic and optoelectronic applications due to their tunable electrical conductivity, interfacial interactions, and dispersion stability. While GO offers high charge carrier mobility and a functionalized surface, SF enhances exfoliation and reduces agglomeration, critical for uniform thin-film deposition and device integration. This study investigates the synergistic effects of SF on GO dispersion in alkaline solutions and evaluates the nanocomposite’s electrical, optical, and structural properties. Microscopic and spectroscopic analyses confirm that SF promotes GO exfoliation, reducing sheet agglomeration while maintaining structural integrity. The optimized composite (0.25% GO, 10% SF) demonstrates a 48.19% improvement in mechanical strength, attributed to enhanced densification and reduced Ca 2+ -induced crosslinking. Electrical resistivity measurements reveal that SF incorporation maintains a moderate resistivity (∼10 6 Ω · mm), while UV-Vis spectroscopy indicates retained π π * transitions in GO, suggesting minimal disruption to its electronic structure. The nanocomposite’s optical absorption profile, with characteristic GO peaks at 230 nm and 300 nm, aligns with potential optoelectronic applications such as transparent conductors or photodetectors. Furthermore, XRD and SEM analyses confirm that SF modifies the hydration chemistry, reducing Ca(OH) 2 crystallization and promoting a denser matrix, which may benefit flexible electronic substrates. These findings highlight the dual functionality of SF/GO nanocomposites, where SF not only improves dispersion but also preserves GO’s electronic properties. The study provides foundational insights into designing high-performance nanocomposites for next-generation nanoelectronics, including flexible circuits, sensors, and conductive coatings, where uniform dispersion and stable electrical performance are paramount.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"20 6","pages":"617-627"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Properties of Solid Oxide Fuel Cells Based on A-Site Cation-Deficient Double Perovskite Y_1–XBa_0.5Sr_0.5Fe₂O_6–δ Fiber Materials","authors":"Guofeng Wang, Li‐Zhong Wang, Jianbo Liu","doi":"10.1166/jno.2024.3637","DOIUrl":"https://doi.org/10.1166/jno.2024.3637","url":null,"abstract":"As a classical high performance cathode material, ion and electron mixed conductor (MIEC) is essential for solid oxide fuel cell (SOFC) to maintain good power conversion efficiency at low temperature. In this paper, a new electrospinning technique and the introduction of A-site defect mechanism were used to improve it. The results show that the absence of Y 3+ in the Y 1–X Ba 0.5 Sr 0.5 Fe 2 O 6–δ (YBSF) lattice can obtain higher oxygen vacancy concentration, accelerate the oxygen ion transmission rate, electrochemical performance becomes more ideal. As a single battery cathode, the PPD of Y 0.95 BSF nanofiber material at 700 °C is 445 mW cm −2 , which is much higher than the power density of YBSF nanofiber material at 700 °C of 214 mW cm −2 , and the Rp at 700 °C is 0.208 Ω cm 2 , which is much smaller than 0.448 Ω cm 2 .","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"19 8","pages":"811-817"},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2D SnO₂/g-C₃N₄ Heterojunctional Nanocomposite-Based Acetone Sensor","authors":"Nianci Li, Li Yu, Hao Zhang","doi":"10.1166/jno.2023.3546","DOIUrl":"https://doi.org/10.1166/jno.2023.3546","url":null,"abstract":"In this study, a novel 2D SnO 2 /g-C 3 N 4 nanosheet heterojunction was successfully synthesized utilizing a facile hydrothermal method coupled with a subsequent pyrolysis process. Comprehensive characterization employing X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) confirmed the formation of nanocomposites featuring lamellar g-C 3 N 4 nanosheets enveloping SnO 2 nanoparticles. The SnO 2 /g-C 3 N 4 heterojunctional composite, with a g-C 3 N 4 weight of 55.66%, exhibited a remarkable maximum gas-sensing response of 8.81 towards 20 ppm acetone at the optimized operating temperature of 280 °C. This response was approximately 3.1 times higher than that observed for pure SnO 2 nanoparticles. The heightened sensing performance is attributed to the homogeneous dispersion of SnO 2 nanoparticles on lamellar g-C 3 N 4 nanosheets and the formation of an n-n heterojunction. The insights gained from this investigation offer valuable implications for the design and fabrication of metal oxide-based heterojunctional nano/microstructures, providing enhanced capabilities for gas sensing applications.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"18 12","pages":"1419-1426"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influences of Sintering Temperature and Pressure on Microstructure, Optical and Mechanical Properties of Hot-Pressing-Sintered Gd₂O₃–MgO Nanocomposites","authors":"Nan Wu, Kai Hu, Zhongchao Fu, Haibo Long, Zhaoxia Hou, Cen Shao, Xiao Liang, Ahmed A. Ibrahim, Ahmad Umar","doi":"10.1166/jno.2023.3538","DOIUrl":"https://doi.org/10.1166/jno.2023.3538","url":null,"abstract":"Low temperature combined with high application pressure sintering technology is one of effective approaches to fabricate ceramics with fine microstructure. We reported that the Gd 2 O 3 –MgO nanocomposite ceramics were obtained by hot-pressing sintering using nanopowders derived from sol–gel combustion method in this paper. The high optical transmittance (80.1%–83.5%) over 2-6 μ m and the high values for Vickers hardness (11.1 ± 0.3 GPa) and bending strength (192.6 ± 8.1 MPa) were obtained by hot-pressing sintering at low sintering temperature (1300 μ C) and high application pressure (65 MPa).","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"18 12","pages":"1458-1465"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of ZnO/rGO Nanocomposite and Its Application for Photocatalytic Degradation","authors":"Aini Ayunni Mohd Raub, J. Ridwan, Jamal Kazmi, Muhammad Aniq Shazni Mohammad Hanif, M. R. Buyong, Mohd Ambri Mohamed, J. Yunas","doi":"10.1166/jno.2023.3487","DOIUrl":"https://doi.org/10.1166/jno.2023.3487","url":null,"abstract":"Zinc oxide (ZnO) nanorods (NRs) with reduced graphene oxide (rGO) were successfully synthesized using a hydrothermal method with an additional spray coating. This paper focuses on the effect of rGO coating on charge transfer and interaction between ZnO and rGO that remarkably contributes to the enhancement of the electrical and optical properties of ZnO-based NRs. The synthesized ZnO/rGO nanocomposite was characterized using FESEM, PL spectroscopy and XPS. FESEM analysis results showed that the surface morphology of the synthesized NRs had a hexagonal rod structure covered with rGO layers on the tip of the rod. The Tauc Plot analysis revealed that the rGO layers reduced the bandgap of ZnO NRs from 3.25 eV to 3.17 eV, where the light absorption increased. The chemical composition, electronic state, and interactions between the elements in the ZnO NRs/rGO nanocomposites were investigated using XPS. The presence of oxygen species due to the rGO deposition layers is indicated by the shift of the peak position toward a greater binding energy. The hybridization of this semiconductor and graphene material reduced the bandgap and lowered the PL emission. Finally, the photocatalytic activity of ZnO NRs/rGO has been studied for methylene blue degradation via oxidation. The results showed that the photocatalytic reaction rate constant of ZnO NRs/rGO > pristine ZnO NRs.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"11 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139326507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrawideband Tunable Polarization Converter Based on Metamaterials","authors":"Zhenyuan Zhu, Xiaolong Cao, Jiaqi Yuan, Yuchen Du, Tongchang Zhang","doi":"10.1166/jno.2023.3481","DOIUrl":"https://doi.org/10.1166/jno.2023.3481","url":null,"abstract":"In order to overcome the shortcomings of the traditional polarization conversion device, a symmetric “E” type metamaterial resonance cell structure is proposed in the paper for the design of polarization conversion devices. Two kinds of polarization converter models are designed in this paper, and their polarization coefficient, phase and polarization conversion ratio (PCR) are simulated and analyzed. The polarization coefficients at different incident angles and different phase transitions of VO2 are simulated and analyzed. The study indicates that the polarization conversion efficiency of the polarization converter reaches 90% in the 0–2.0 THz frequency band, and the performance can be maintained within the incident angle of 45 degrees, covering the whole X band, realizing the broadband line polarization conversion with extremely high polarization conversion rate. Moreover, the polarization performance is tunable with the phase transition of VO2, and the research results provide new ideas for the realization of ultrawideband tunable polarization conversion devices and the application of metamaterials.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"18 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139325538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Terahertz Metamaterial Sensor Based on Electromagnetic Induced Transparency","authors":"Xiaoting Wan, Jin Lu, Meifen Chen, Ying Wang","doi":"10.1166/jno.2023.3500","DOIUrl":"https://doi.org/10.1166/jno.2023.3500","url":null,"abstract":"A graphene-based terahertz electromagnetically induced transparency (EIT) metamaterial sensor is proposed and studied. The sensor is made up of two bright modes: a graphene strip resonator and a 7-shape resonator. In a terahertz metamaterial sensor based on EIT, the metamaterial structure is designed to have two resonant modes that are coupled through a common resonator. When terahertz radiation hits the metamaterial, the two resonant modes interact, creating a window of transparency in the transmission spectrum. It illuminated that the physical mechanism of the EIT effect lay in the recombination effect of the conductive resonators. By changing the carrier relaxation lifetime or the Fermi energy of the graphene, the amplitude or the location of the EIT window could be actively tuned. The terahertz metamaterial sensors based on EIT have the potential to provide highly accurate and sensitive measurements in a wide range of fields and could lead to important advances in medical diagnostics.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"6 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139327652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel High-Gain Quadratic Buck-Boost Converter","authors":"Gao-Zhong Zhu","doi":"10.1166/jno.2023.3480","DOIUrl":"https://doi.org/10.1166/jno.2023.3480","url":null,"abstract":"Based on voltage boosting technology, a simple new quadratic buck-boost topology is proposed. The proposed converter has higher voltage gain and uninterrupted input current, reducing the filtering requirements of the input port. The performance of the converter in uninterrupted conduction mode are introduced in detail, and the new quadratic buck-boost topology is compared with other buck-boost topologies with regard to voltage gain, number of topological elements, voltage stress and current continuity of switching devices, and the comparison showed its excellent characteristics. Finally, the experimental prototype of the new converter is developed by PSIM. The experimental data is tested under different conditions, and the record experimental data of PSIM to verify the excellent of the new topology.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139329321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current Re-Use Architecture and Pre-Distortion Technique Employing Re-Configurable Low Noise Amplifier for the Design of Nano-Electronic Sensors","authors":"K. Suganthi, S. Kayalvizhi, K. Ferents Koni Jiavana, S. Malarvizhi","doi":"10.1166/jno.2023.3491","DOIUrl":"https://doi.org/10.1166/jno.2023.3491","url":null,"abstract":"This study presents the design of reconfigurable CMOS Low Noise Amplifier (LNA) topologies to achieve acceptable linearity, gain, and low noise for Nano-sensor applications. The frequency bands at 2.4 GHz, 5 GHz and 28 GHz are taken into consideration for employing the Pre-distortion and current reuse technique. Millimeter Wave (MMW) frequency bands include excellent impedance matching, good isolation between the ports, To improve the futuristic applications of RADAR sensors, low noise figures and significant gain are preferred. The designed re-configurable structure achieved At 2.4 GHz, the gain is modest with a low NF of 2.6 dB, less than 2 dB at 5 GHz, and more than 10 dB at 28 GHz frequencies. The Stability of the amplifier greater than 1 dB, The arrangement of the layout with a chip measuring 0.5×0.2 mm2 and a moderate power increase make it appropriate for nanosensor creation.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"30 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139331451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}