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  Subjects -> ELECTRONICS (Total: 207 journals)
Showing 1 - 200 of 277 Journals sorted by number of followers
IEEE Transactions on Aerospace and Electronic Systems     Hybrid Journal   (Followers: 283)
Control Systems     Hybrid Journal   (Followers: 237)
IEEE Transactions on Geoscience and Remote Sensing     Hybrid Journal   (Followers: 174)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 167)
Electronic Design     Partially Free   (Followers: 125)
Electronics     Open Access   (Followers: 125)
Advances in Electronics     Open Access   (Followers: 122)
Electronics For You     Partially Free   (Followers: 114)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 112)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 90)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 88)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 87)
IEEE Transactions on Industrial Electronics     Hybrid Journal   (Followers: 85)
IEEE Transactions on Software Engineering     Hybrid Journal   (Followers: 84)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 79)
IET Power Electronics     Open Access   (Followers: 76)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 65)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 62)
IEEE Embedded Systems Letters     Hybrid Journal   (Followers: 60)
IEEE Transactions on Industry Applications     Hybrid Journal   (Followers: 57)
Advances in Power Electronics     Open Access   (Followers: 56)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 52)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 50)
IEEE Nanotechnology Magazine     Hybrid Journal   (Followers: 45)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 45)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 41)
IET Microwaves, Antennas & Propagation     Open Access   (Followers: 35)
IEEE Transactions on Biomedical Engineering     Hybrid Journal   (Followers: 35)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 31)
International Journal of Power Electronics     Hybrid Journal   (Followers: 30)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 27)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 27)
Microelectronics and Solid State Electronics     Open Access   (Followers: 27)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 26)
Journal of Sensors     Open Access   (Followers: 25)
Electronics Letters     Open Access   (Followers: 25)
International Journal of Aerospace Innovations     Full-text available via subscription   (Followers: 23)
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 22)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 19)
IEEE Reviews in Biomedical Engineering     Hybrid Journal   (Followers: 19)
IEEE/OSA Journal of Optical Communications and Networking     Hybrid Journal   (Followers: 19)
Journal of Artificial Intelligence     Open Access   (Followers: 18)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 18)
IET Wireless Sensor Systems     Open Access   (Followers: 17)
Circuits and Systems     Open Access   (Followers: 16)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 16)
IEEE Transactions on Signal and Information Processing over Networks     Hybrid Journal   (Followers: 14)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 14)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 14)
Archives of Electrical Engineering     Open Access   (Followers: 14)
International Journal of Control     Hybrid Journal   (Followers: 13)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 13)
Advances in Microelectronic Engineering     Open Access   (Followers: 12)
IEEE Transactions on Learning Technologies     Full-text available via subscription   (Followers: 12)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 12)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 12)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 12)
IEEE Solid-State Circuits Magazine     Hybrid Journal   (Followers: 11)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 11)
IEEE Women in Engineering Magazine     Hybrid Journal   (Followers: 11)
IEEE Transactions on Broadcasting     Hybrid Journal   (Followers: 11)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 10)
International Journal of Advanced Electronics and Communication Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 10)
IETE Journal of Research     Open Access   (Followers: 10)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 9)
IETE Technical Review     Open Access   (Followers: 9)
Batteries     Open Access   (Followers: 8)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 8)
IEEE Transactions on Autonomous Mental Development     Hybrid Journal   (Followers: 8)
Journal of Power Electronics     Hybrid Journal   (Followers: 8)
China Communications     Full-text available via subscription   (Followers: 8)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 8)
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Metrology and Measurement Systems     Open Access   (Followers: 8)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 8)
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal   (Followers: 8)
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 8)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 8)
Solid-State Electronics     Hybrid Journal   (Followers: 7)
Nanotechnology, Science and Applications     Open Access   (Followers: 7)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 7)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
IEEE Magnetics Letters     Hybrid Journal   (Followers: 7)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 7)
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 6)
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Annals of Telecommunications     Hybrid Journal   (Followers: 6)
Electronic Markets     Hybrid Journal   (Followers: 6)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 6)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 6)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 6)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access   (Followers: 5)
Journal of Electronics (China)     Hybrid Journal   (Followers: 5)
Journal of Field Robotics     Hybrid Journal   (Followers: 5)
Energy Storage Materials     Full-text available via subscription   (Followers: 5)
IEEE Pulse     Hybrid Journal   (Followers: 5)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 5)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 5)
Batteries & Supercaps     Hybrid Journal   (Followers: 5)
IEEE Transactions on Services Computing     Hybrid Journal   (Followers: 5)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 4)
Wireless and Mobile Technologies     Open Access   (Followers: 4)
Superconductivity     Full-text available via subscription   (Followers: 4)
IEEE Transactions on Haptics     Hybrid Journal   (Followers: 4)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 4)
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 4)
Networks: an International Journal     Hybrid Journal   (Followers: 4)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Sensors International     Open Access   (Followers: 3)
Nature Electronics     Hybrid Journal   (Followers: 3)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
EPE Journal : European Power Electronics and Drives     Hybrid Journal   (Followers: 3)
Machine Learning with Applications     Full-text available via subscription   (Followers: 3)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 3)
Informatik-Spektrum     Hybrid Journal   (Followers: 3)
IETE Journal of Education     Open Access   (Followers: 3)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 2)
Power Electronics and Drives     Open Access   (Followers: 2)
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal   (Followers: 2)
Advancing Microelectronics     Hybrid Journal   (Followers: 2)
Transactions on Electrical and Electronic Materials     Hybrid Journal   (Followers: 2)
Energy Storage     Hybrid Journal   (Followers: 2)
Journal of Information and Telecommunication     Open Access   (Followers: 2)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 2)
Advanced Materials Technologies     Hybrid Journal   (Followers: 2)
EPJ Quantum Technology     Open Access   (Followers: 2)
e-Prime : Advances in Electrical Engineering, Electronics and Energy     Open Access   (Followers: 2)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 2)
IET Smart Grid     Open Access   (Followers: 2)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 2)
Journal of Nuclear Cardiology     Hybrid Journal   (Followers: 1)
Transactions on Cryptographic Hardware and Embedded Systems     Open Access   (Followers: 1)
ACS Applied Electronic Materials     Open Access   (Followers: 1)
Frontiers in Electronics     Open Access   (Followers: 1)
IEEE Letters on Electromagnetic Compatibility Practice and Applications     Hybrid Journal   (Followers: 1)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 1)
IET Energy Systems Integration     Open Access   (Followers: 1)
ECTI Transactions on Electrical Engineering, Electronics, and Communications     Open Access   (Followers: 1)
International Journal of Hybrid Intelligence     Hybrid Journal   (Followers: 1)
Open Electrical & Electronic Engineering Journal     Open Access   (Followers: 1)
Ural Radio Engineering Journal     Open Access   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Електротехніка і Електромеханіка     Open Access   (Followers: 1)
Edu Elektrika Journal     Open Access   (Followers: 1)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 1)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
Automatika : Journal for Control, Measurement, Electronics, Computing and Communications     Open Access  
npj Flexible Electronics     Open Access  
Elektronika ir Elektortechnika     Open Access  
Emitor : Jurnal Teknik Elektro     Open Access  
IEEE Solid-State Circuits Letters     Hybrid Journal  
IEEE Open Journal of Industry Applications     Open Access  
IEEE Open Journal of the Industrial Electronics Society     Open Access  
IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology     Hybrid Journal  
IEEE Open Journal of Circuits and Systems     Open Access  
Journal of Electronic Science and Technology     Open Access  
Australian Journal of Electrical and Electronics Engineering     Hybrid Journal  
Solid State Electronics Letters     Open Access  
Industrial Technology Research Journal Phranakhon Rajabhat University     Open Access  
Journal of Engineered Fibers and Fabrics     Open Access  
Jurnal Teknologi Elektro     Open Access  
IET Nanodielectrics     Open Access  
Elkha : Jurnal Teknik Elektro     Open Access  
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Jurnal Teknik Elektro     Open Access  
IACR Transactions on Symmetric Cryptology     Open Access  
Acta Electronica Malaysia     Open Access  
Bioelectronics in Medicine     Hybrid Journal  
Chinese Journal of Electronics     Open Access  
Problemy Peredachi Informatsii     Full-text available via subscription  
Technical Report Electronics and Computer Engineering     Open Access  
Jurnal Rekayasa Elektrika     Open Access  
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Visión Electrónica : algo más que un estado sólido     Open Access  
Telematique     Open Access  
International Journal of Nanoscience     Hybrid Journal  
International Journal of High Speed Electronics and Systems     Hybrid Journal  

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Similar Journals
Journal Cover
Electronic Materials Letters
Journal Prestige (SJR): 0.704
Citation Impact (citeScore): 2
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1738-8090 - ISSN (Online) 2093-6788
Published by Springer-Verlag Homepage  [2469 journals]
  • Sezawa Guided Mode on Periodic Grooves of GaN/Sapphire Substrate

    • Free pre-print version: Loading...

      Abstract: Gallium nitride could exhibit strong piezoelectric properties which could be further developed for high frequency devices, telecommunication applications, and many more. In this study, we explored theoretically and experimentally the potential Sezawa guided mode in the groove structure along the GaN/Sapphire interface. Computational analysis with Finite Element Method demonstrates the presence three peaks of particular modes at specifics resonance frequencies and interestingly with high energy confinement inside the GaN. The experimental data of insertion loss peak graph extrapolated from s-parameter measurement showed that the results of frequency response are correspond to three peaks of the particular modes hence validate the computational results. This finding is attributed to the locally resonant mechanism that confines the energy in the periodic structure that prevents radiation of energy. This particular propagation can be exploited to enable the development of Sezawa-GaN platform to be operational in the liquid medium, for sensor and actuator applications. Graphical
      PubDate: 2022-05-13
       
  • Recent Advances for Fabricating Smart Electromagnetic Interference
           Shielding Textile: A Comprehensive Review

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      Abstract: A sharp elevation in the generation of electromagnetic interference (EMI) is observed, directly proportional to the increase in digital and electronic appliances. With the high growing population and enhancement in the number of electrical devices used in personal, industrial and medical sites, the issues arising due to EMI are also at their peak. EM wave interference is known to cause malfunctioning of the nearby electronic devices, destroying the signals and affecting human health, causing nausea, headaches, neural deformities etc. To avoid the harmful effect of these interferences, the personnel in its vicinity need a shielding material, protecting them from the ill effects of the electromagnetic waves. In this review article, EMI shielding textiles are being focused upon. Cotton, spandex, PET, PAN, silk fabric, etc., are modified through various methods and techniques like drop-casting, layer-by-layer electrostatic self-assembly, click chemistry, and inkjet printing to perform the function of shielding of EM waves. These smart, flexible, hydrophobic and light weighing fabrics can be revolutionary in diminishing the deteriorating effects of EM waves in the human body. Surface modified having high electrical conductivities and EMI SE of up to and beyond 90 dB in various frequency ranges have been reported, providing promising and alternative personal protective equipment for electromagnetic interference shielding. Graphical
      PubDate: 2022-05-04
       
  • Recent Progress in Shape-Transformable Materials and Their Applications

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      Abstract: Carefully designed geometries and materials can program desired shapes. In this review, we introduce shape-transformable materials and their recent applications in electronic devices and robots. Strain-guiding shape transformation can be achieved by geometry design or materials design, which can program the magnitude and direction of strain to develop desired shapes. For the geometry design, we discuss origami and kirigami, which transform 2D sheet materials into desired 3D shapes via local deformations caused by fold creases and cut openings. The desired shape can be programmed by controlling the length and alignment of folds or cuts. For the material design, heterogeneities in materials can develop strain driven shape transformation. Heterogeneities in materials include those in anisotropic materials, graded materials, or mixtures of different materials. Shape-transformable materials can be prepared by introducing heterogeneities into stimuli-responsive materials, including inflatable materials, shape memory polymers, liquid crystal elastomers, and hydrogels. The development of shape-transformable materials has led to innovations in energy storage devices, displays, sensors, epidermal electronics, actuators, and robots. Graphical abstract
      PubDate: 2022-05-01
       
  • Effects of Spin-Casting Speed on Solar Cell Performances and Corresponding
           Films Morphology and Optical Properties Using 2D Perovskite of
           PEA2MA2Pb3I10

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      Abstract: On hot substrates with a temperature of 100 °C, the qualities of two-dimensional perovskite PEA2MA2Pb3I10 (PEA = phenethylammonium, MA = methylammonium) films have been explored which are constructed with different spin-casting speeds. These films are performed at the speed of 1000, 2000, 4000, and 6000 revolution per minute (RPM). Below 4000 r, a higher RPM results in higher crystalline quality with more uniform morphology. Correspondingly, 4000 r devices show better performance on average (4.3% power conversion efficiency) and less hysteresis in the J-V curve than 1000 r (3.6%) and 2000 r devices (3.4%). However, for devices that were fabricated at 6000 r, inferior performance (2.8% on average) may not be predicted simply by the morphology characterization or optical measurement results at room temperature; instead, carrier trapping states can occur that result in thermally activated PL below 200 K with an activation energy of 18 meV, which do not occur in the 1000 r, 2000 r, and 4000 r films. Our results suggest that for evaluating 2D perovskite films prior to fabricating optimal devices, multiple morphology characterizations and optical measurements, including of low-temperature PL, will be helpful. Graphical Integrated PL intensity as a function of the inverse temperature of 1000 r, 2000 r, 4000 r and 6000 r, respectively, shows that optical measurements (especially low-temperature PL) are needed if we want to directly linked the optical properties of perovskite materials to the performances of corresponding devices.
      PubDate: 2022-04-11
       
  • Direct Fabrication of Vertically Stacked Double Barrier Tunnel Junctions
           Based on Graphene and h-BN

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      Abstract: Direct manufacturing of two-dimensional material-based double barrier (DB) tunnel junctions, based on a lithography-free approach was developed. Graphene/h-BN/Graphene/h-BN/Graphene devices were deposited on Si/SiO2 substrates by employing a plasma enhanced chemical vapor deposition technique in a sequential manner. DB tunneling junctions with varying barrier widths (by varying the thickness of the second graphene layer) were studied. Samples were characterized using Raman, Atomic Force Microscopy and X-ray photoemission spectroscopy. The I–V characteristics of tunneling current showed resonant tunneling behavior at room temperature with a negative differential conductance. The behavior could be explained with quantum mechanical double barrier tunneling model in which analytic solutions to Schrödinger’s equation were obtained in each region of the system. Resonances in transmission probability coefficient for varying barrier widths were evaluated and compared with the experimental results. Graphical
      PubDate: 2022-04-07
       
  • Raman Shift of Surface Reaction and Plasma Induced Surface Damage by
           TNF3/BNF3 Reactive Ion Etching Process

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      Abstract: We examined the conditions for process optimization with the exposure of hot H2/NF3 mixture to a chemical oxide on the Si surface. Etching characteristics are described; then the etching mechanism is discussed based on the Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) observations that occurred during the etching. This research viewed the hydrogen/NFs based reactive clean process as an oxide, silicon clean process technology to enhance product reliability by improving light controlled etching, which is considered one of the factors that can weaken contact resistance when forming gates and below 10 nm pattern profiles. Furthermore, the existing properties that occur when applied to nanoscale sized holes and trenches with high aspect ratio were also discussed. Graphical
      PubDate: 2022-04-06
       
  • Recent Progress in Carbon Electrodes for Efficient and Cost-Benign
           Perovskite Optoelectronics

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      Abstract: With popularity of the perovskite optoelectronics, its material properties and device performances have been widely studied. However, the issues in cost management and continuous fabrication still hinder the commercialization of the perovskite optoelectronics. Especially, the conventional electrodes such as metal and transparent conducting oxide (TCO) have limitations due to the difficulties in fabrication which requires high temperature and vacuum processes, largely increasing the time and cost. Therefore, carbon materials with high electric conductivity and favorable work function are recently being noticed as alternatives to the conventional electrodes since the carbon materials are abundant in nature and low in the fabrication cost. Therefore, carbon electrode for the perovskite optoelectronics is widely studied to replace the conventional electrode, and utilizing carbon as an electrode can be the alternative solution for a future electrode model. In this review, the recent progress of carbon electrodes in perovskite optoelectronics and various applications will be discussed. Graphical Title: Recent Progress in Carbon Electrodes for Efficient and Cost-Benign Perovskite Optoelectronics. Keywords: Perovskite Solar Cells, Electrode, Carbon, Cost Engineering, Performance, Stability. Electrodes in the perovskite optoelectronics rely on the metal and oxide-based materials. Carbon is highly conductive and has proper work function of 5.0 eV, which has a potential to replace the conventional vacuum-processed electrodes, such as metal and transparent conducting oxide (TCO). Moreover, carbon electrode allows wide utilizations in flexible, semi-transparent, and large-area devices. Therefore, utilizing carbon as an effective electrode can be the alternative solution for the future electrode model.
      PubDate: 2022-04-06
       
  • Crystallite Size Effect on X-ray-instigated Photocurrent Properties of
           PbWO4 Thick Film

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      Abstract: X-rays are widely used in many domains such as clinical diagnostic, imaging, industrial inspection, and environmental safety, allowing researchers for innoviative superior low-dose sensor development. In direct detection type of X-ray, X-ray photons are directly absorbed by photoconductors such as HgI2, PbI2, and BiI3 that are the available X-ray semiconductor detectors. This study analyzes the properties of micro and nanocrystalline PbWO4 prepared as thick film above the interdigitated electrode for direct photon detection. PbWO4 was found to have a better attenuation value of ~ 6.13 cm2/g at 70 keV as compared with the existing semiconductor detectors. The X-ray-instigated photocurrent behavior of PbWO4 was measured at various low doses by an intra-oral 70 keV machine connected with a Keithley model 2450 measuring source meter. Maximum sensitivity was found to be about 0.40 and 9.80 nC/mGycm3, respectively, for micro and nanocrystalline PbWO4, obtained at 7.97 mGy dose. The nanocrystalline PbWO4 thick film displayed more than twenty-four times sensitivity as compared with the microcrystalline PbWO4 film by virtue of the nanocrystalline size effect on X-ray detection. Graphical abstract
      PubDate: 2022-03-29
       
  • Preparation and Stability of PEGDA/GO Conductive Materials by DLP 3D
           Printing

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      Abstract: Stable composites of water-dispersed graphene oxide (GO) and UV-cured acrylic resin, poly (ethylene glycol) diacrylate (PEGDA), were prepared to make printed conductive patterns using a digital light processing (DLP) three-dimensional (3D) printing method. The targeted structures were successfully printed by DLP 3D printing and the electrically conductive properties were obtained by reducing the insulating GO in the composites to reduced GO by chemical and thermal reduction processes. Three basic reduction procedures, pre-thermal, pre-chemical, and post-thermal reduction, were performed to introduce a high conductivity into a printed structure and the lowest resistance was achieved by the pre-thermal reduction in our study. The stability of the printed structures was also evaluated by monitoring the change in resistance with time. The strategy pursued by photopolymerization gives the outstanding features of printed structures for extensive applications in the manufacturing of electronic and sensing devices. Graphical
      PubDate: 2022-03-11
      DOI: 10.1007/s13391-022-00338-8
       
  • Fabrication of h-BN Filled Epoxy-Based Thermally Conductive Adhesive Tapes
           Containing Cyclic Carbonate-Terminated Oligomers

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      Abstract: Thermally conductive (TC) adhesive tapes consisting of adhesives and TC fillers are widely used as thermal interface materials because of their tack properties for temporary fixation and high peel strength for permanent bond. However, the trade-off between peel strength and thermal conductivity with increasing filler loading impedes the manufacture of high-performance TC tapes. Therefore, a technique to realize high thermal conductivity of TC adhesives with lower filler loading is crucial. In this study, epoxy-based adhesives (EAs) was used to fabricate TC adhesive tapes. To secure high peel strength of EAs, a cyclic carbonate-terminated oligomer (CCO) was synthesized and employed as a component. The simultaneous reactions between epoxy resin, CCO and curing agent were analyzed using FTIR spectroscopy. Thanks to tack, the partially cured EAs could be used to fabricate tapes which were temporarily fixed and then permanently bonded via complete curing. Next, EAs and h-BN fillers were admixed to produce TC adhesive tapes. Because h-BN fillers were partially aligned to the in-plane direction by bar-coating, the in-plane thermal conductivity of the TC-1 adhesive containing only 20 wt% h-BN fillers was as high as 2.73 W/m K, which was slightly lower than that (2.97 W/m⋅K) of the TC-4 adhesive containing 35 wt% h-BN fillers. In addition, the peel strength of the TC-1 adhesive tape reached 2307 (± 64) gf/in. Graphical
      PubDate: 2022-03-01
      DOI: 10.1007/s13391-021-00324-6
       
  • Additive Effects of Copper and Alkali Metal Halides into Methylammonium
           Lead Iodide Perovskite Solar Cells

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      Abstract: Fabrication and characterization of methylammonium lead iodide perovskite solar cells incorporated with formamidinium iodide, copper halides, alkali metal halides and decaphenylcyclopentasilane were performed. Addition of CuCl and KI at 2% into the perovskite layer offered compact morphologies and crystal orientation in the perovskite layer, improving short circuit current densities, series resistance and open-circuit voltages related to conversion efficiencies. The stabilities of conversion efficiencies were improved for the perovskite layer incorporated with 2% CuCl and 2% NaI. The stabilities depended on the state of the surface morphologies and crystal orientation while suppressing decomposition reaction in the perovskite layer. The photovoltaic mechanisms were associated with promotion of carrier generation and diffusion in the crystalline layer. The electronic correlation was based on the charge transfer between 5p orbital of I ion and 3d orbital of Cu ion near valence band, promoting the carrier generation and diffusion related to the short circuit current densities. Graphical
      PubDate: 2022-03-01
      DOI: 10.1007/s13391-021-00325-5
       
  • Effect of the Ag-Doping on the Phase Structural Evolution, Dielectric and
           Ferroelectric Properties of Lead-Free Niobate Ceramics

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      Abstract: Ionic doping is an important approach to modification of crystal structure and physical properties of the piezoelectric ceramics. In this work, the lead-free piezoelectric ceramic (1-x)K0.18Na0.74Li0.08NbO3-xAgNbO3 (abbreviated as KNLN-xAN, 0 ≤ x ≤ 0.8) was prepared by conventional solid-state reaction method. The effect of the Ag doping on the phase structure, dielectric and ferroelectric properties of the KNLN-based ceramics was investigated by the XRD, DSC, dielectric and ferroelectric characterizations. It is found that all KNLN-xAN ceramics show single phase in perovskite structure because the ionic radii of dopant Ag close to the average ionic size at the A-site in KNLN. The KNLN-xAN exhibits the rhombohedral to orthorhombic phase transition at room temperature and the Curie temperature (TC) decreases to low temperature with increasing x value. A narrow tetragonal phase region and a wide orthorhombic phase region form for the compositions with x ≥ 0.4, indicating that the Ag doping stabilizes orthorhombic phase in wide temperature for the KNLN. A ferroelectric anomalies due to high electrical field induced phase transition is found in the sample with x = 0.1. When x = 0.4, high Curie temperature (TC = 380 °C), large remnant polarization (Pr = 24.4 μC/cm2) and high dielectric constant (εr = 10,000 at 1 kHz) at TC are achieved. Graphical abstract
      PubDate: 2022-03-01
      DOI: 10.1007/s13391-021-00328-2
       
  • Correction to: Facile One-Step Fabrication of 3-Dimensional SiO2-C
           Electrodes for Lithium-ion Batteries Using a Highly Porous SBA-15 Template
           and Pore-Forming Agent

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      Abstract: SiO2-based anodes have attracted extensive attention due to their high theoretical capacity of 1,956 mAh g−1, stable cycle life.
      PubDate: 2022-02-22
      DOI: 10.1007/s13391-022-00335-x
       
  • Review on Ti3C2-Based MXene Nanosheets for Flexible Electrodes

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      Abstract: MXenes have recently gained significant attention owing to their exceptional metallic electrical conductivity, good chemical inertness, and excellent hydrophilicity. Among the various two-dimensional MXenes, which are made up of atomic layers of transition metal carbides and nitrides, Ti3C2Tx is one of the most promising and versatile materials for application in various electronic devices. In fact, there has been a rising trend of using Ti3C2-based MXene nanosheets as flexible electrodes for different electronic devices. Ti3C2-based MXenes have shown the potential to be utilized as flexible and conductive electrodes in electrical energy storage devices, light-emitting devices, photodetectors, and flexible strain sensors. Thus, this review focuses on Ti3C2-based MXene nanosheets and MXene/polymer composite films, which are widely used as flexible and electrode layers in electronic devices, such as supercapacitors, solar cells, light-emitting devices, energy harvesting devices, power generating devices, and flexible strain sensors. First, we have briefly discussed the structure, conductivity, work function, and synthesis processes of Ti3C2 nanosheets based on the most recently published research articles. Then, we discussed the recent advances in the modification methods for Ti3C2-based MXenes to render them suitable for application as conductive electrode layers in various flexible electronic devices. The last section highlights the current challenges in the development and application of Ti3C2-based MXenes and future perspectives. Graphical abstract
      PubDate: 2022-02-17
      DOI: 10.1007/s13391-022-00337-9
       
  • Impact of Strategic Approaches for Improving the Device Performance of
           Mesa-shaped Nanoscale Vertical-Channel Thin-Film Transistors Using
           Atomic-Layer Deposited In–Ga–Zn–O Channel Layers

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      Abstract: The effect of two strategic approaches, such as modification of active layer geometry and control of active channel composition, were investigated to improve the on/off ratio (ION/IOFF) and field-effect mobility (µFE) of mesa-shaped nanoscale vertical-channel thin-film-transistor (VTFT). The SiO2 spacer was deposited by using plasma-enhanced chemical vapor deposition and patterned via plasma etching process with Ar/CF4 gas mixtures to form a vertical sidewall, corresponding to a channel length of 170 nm. The gate-stack structures including an In–Ga–Zn–O (IGZO) active layer were deposited by atomic layer deposition with a complete conformality along the spacer sidewall. The ION/IOFF of the IGZO VTFT was significantly enhanced from 6.7 × 103 to 2.1 × 109 by lowering the off-state current when the layout geometry of active layer was properly designed to eliminate the uncontrolled current path between the vertically separated source and drain (S/D) electrodes. Furthermore, the µFE was improved from 0.3 to 2.2 cm2/Vs by enhancing the ION when the In/Ga ratio increased to 1.4 by controlling the In contents within the IGZO active channel. The device also showed robust stabilities under positive/negative gate-bias stresses at 2 MV/cm for 104 s. However, still low a µFE was suggested to originate from two detrimental issues of back-channel effects on spacer sidewall and contact resistance between the channel and S/D electrodes. Alternatively, it was confirmed that the increase in indium contents within the IGZO channel could be a useful way to reduce the contact resistance between the channel and S/D electrodes. Graphical
      PubDate: 2022-02-11
      DOI: 10.1007/s13391-022-00336-w
       
  • Fabrication of Ni Nanoparticle-Embedded Porous Carbon Nanofibers Through
           Selective Etching of Selectively Oxidized MgO

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      Abstract: The design of the material synthesis process is important because this process can be applied to a variety of materials and used in different applications. Herein, we selectively oxidized two types of metals in a carbon nanofiber (CNF) support and then left only one type of metal on a porous support using selective etching. Ni and MgO were formed in the CNFs through annealing, and then MgO was etched with an HCl etchant. In the selective oxidation process, two types of metal were selected by considering the oxidation tendency between the metal and C. Ni was selected as an oxidant of C, and Mg was selected as a reductant of C. The two metals with significantly different oxidation tendencies were predicted to have different reactivity with the etchant, making them suitable for selective etching. The effectiveness of selective etching was verified by energy-dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM). In EDS, the atomic concentration of Mg was selectively reduced. In TEM, the formation of a porous structure was confirmed. Graphical
      PubDate: 2022-01-31
      DOI: 10.1007/s13391-021-00331-7
       
  • Understanding the Behavior of Oxygen Vacancies in an SrFeOx/Nb:SrTiO3
           Memristor

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      Abstract: SrFeOx resistive switching memory devices based on brownmillerite with an oxygen vacancy channel exhibit high durability and fast performance. In particular, a high on/off ratio of > 104 was observed when Nb-doped SrTiO3 was used as the bottom electrode. We studied a SrFeOx/Nb-doped SrTiO3 (111) device with a high on/off ratio, and used in-situ transmission electron microscopy to examine the crystalline structures of the SrFeOx layer in the high and low resistance states. We employed electron energy-loss spectroscopy to determine oxygen redistribution near the interface between the SrFeOx structure and Nb-doped SrTiO3. The resistance increased when oxygen vacancies accumulated at the interface between Nb-doped SrTiO3 and perovskite SrFeO3−δ, and decreased when oxygen ions filled the interface. In contrast, we observed little change in the oxygen concentration at the interface between Nb-doped SrTiO3 and brownmillerite SrFeO3−δ. We show that the resistance of the SrFeOx/Nb-doped SrTiO3 (111) device is mostly concentrated at the interface between the perovskite SrFeO3−δ and Nb-doped SrTiO3, which changes the barrier height. Graphical
      PubDate: 2022-01-21
      DOI: 10.1007/s13391-021-00334-4
       
  • Facile One-Step Fabrication of 3-Dimensional SiO2-C Electrodes for
           Lithium-ion Batteries Using a Highly Porous SBA-15 Template and
           Pore-Forming Agent

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      Abstract: while the typical SiO2 anode is electrochemically inactive with Li+ ions. Graphical
      PubDate: 2022-01-17
      DOI: 10.1007/s13391-021-00332-6
       
  • Advanced Design, Fabrication, and Applications of 3D-Printable
           Piezoelectric Nanogenerators

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      Abstract: Piezoelectric nanogenerator (PENG) is a leading-edge mechanical energy harvesting device used in portable power supply and self-powered sensor systems. Advanced 3D printers have been recently used to create 3D printed (3DP) PENGs. This has facilitated the rapid fabrication of PENGs and their integration into wearable electronics, biomedical systems, and internet of things devices. However, researchers face several critical challenges in developing robust 3DP-PENGs that can produce adequate electrical energy for self-powered systems. Therefore, this review on 3DP-PENGs is conducted to highlight their recent developments and challenges. This paper presents the latest 3D-printed piezoelectric nanogenerators in terms of their materials selection and functionalization, design and architecture formation, and applications including pressure sensors, flow sensors, microphones, and implants. Finally, crucial challenges and optimization strategies that considerably impact the output performance of 3DP-PENGs, along with a roadmap for their future enhancement are given. It is envisioned that this work will help reduce the gap between 3D printing and PENG technologies and accelerate the research and development of 3DP-PENGs. Graphical
      PubDate: 2022-01-05
      DOI: 10.1007/s13391-021-00327-3
       
  • Raman Spectroscopy and Photocurrent of GaAsN/GaAs Multiple Quantum Wells

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      Abstract: The Raman and photocurrent of the GaAsN/GaAs multiple quantum wells (MQWs) was studied. The Raman spectra are observed to be dominated by the GaAs longitudinal optical (LO) phonon mode as the strongest peaks show up around 287–292 cm-1. Moreover, the weak and broad spectral features in the range of 265–270 cm-1 originate from the peaks associated with the GaAs transverse optical (TO) phonon mode. And, the peaks observed in the photoluminescence and the photocurrent spectra were preliminarily assigned to electron–heavy hole (e1–hh) and electron–light hole (e1–lh) fundamental transitions. Two additional transitions related to MQWs region are observed other than transitions involving the ground state. The structural properties of GaAsN/GaAs MQWs were investigated by using high-resolution X-ray diffraction (HRXRD). Graphic
      PubDate: 2022-01-05
      DOI: 10.1007/s13391-021-00326-4
       
 
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