Journal of Electronic Materials
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#1Mahnaz Mohammadi (University of Qom)H-Index: 8
#2Esmaeil Pakizeh (Yasouj University)H-Index: 5
In contrast to bulk semiconductors, the bandgap of two-dimensional (2D) transition-metal dichalcogenide monolayers is strongly dependent on the dielectric environment. The optical properties of these 2D materials can also be significantly modified by substrate screening. We report herein the structural, electronic, and optical properties of n-BN/WS2 heterostructures consisting of a WS2 monolayer on top of n layers of BN substrates (n = 1 to 4) based on first-principles calculations and theoretic...
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#1Marzieh Bakhtiary-Noodeh (Georgia Institute of Technology)H-Index: 3
#2Minkyu Cho (Georgia Institute of Technology)H-Index: 10
Last. Russell D. Dupuis (Georgia Institute of Technology)H-Index: 51
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Front-illuminated GaN-based p-i-n ultraviolet (UV) avalanche photodiodes (APDs) were grown by metalorganic chemical vapor deposition on a free-standing GaN substrate. X-ray diffraction measurements confirm the high crystal quality of the grown structure. Atomic force microscopy measurements show well-developed atomic step-flow morphologies with sub-nanometer root-mean-square surface roughness for scan sizes of 1 × 1 null null null null null null null null null null null null null null null null ...
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#1Saowaluk Buapoon (PSU: Prince of Songkla University)H-Index: 2
#2Anukorn Phuruangrat (PSU: Prince of Songkla University)H-Index: 39
Last. Somchai Thongtem (CMU: Chiang Mai University)H-Index: 49
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Ag/ZnO heterostructure nanocomposites containing different amounts of Ag were successfully synthesized in surfactant-free solutions by a sonochemical deposition. The samples were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The results show that all heterostructure samples were composed of metallic Ag nanoparticles...
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#1Pradeep Prajapat (Pacific University)
#2Saroj Dhaka (Banasthali Vidyapith)
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In this paper, nanocrystalline Mg-ferrites have been synthesized by the low-cost sol-gel auto-combustion method using iron and magnesium nitrates as starting materials. The as-prepared sample was annealed at temperatures of 200°C, 400°C, 600°C, 800°C, and 1000°C in an air atmosphere to investigate the effect of annealing temperature on the physical properties. The structural and magnetic properties of the annealed ferrites were studied using x-ray diffraction, Fourier transform infrared (FTIR) a...
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#1M. Ahmadzadeh (University of Kashan)H-Index: 1
#2M. Almasi Kashi (University of Kashan)H-Index: 18
Last. Abdolali Ramazani (University of Kashan)H-Index: 18
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A combinatory two-step anodization technique is presented to prepare self-ordered porous anodic alumina (PAO) templates. The first and second anodization steps are performed in oxalic and selenic acid at 40 V and 45 V, respectively, giving rise to 13-nm-diameter PAOs with high ordering and porosity of 1.4%. The anodization time for the second step is also changed to investigate the effect of the oxide layer thickness on the pore ordering, using field-emission scanning electron microscopy and fas...
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#1O. Rocha-Rocha (Popular University of Cesar)H-Index: 4
#2M. Cortez-Valadez (Universidad de Sonora)H-Index: 12
Last. M. Flores-Acosta (Universidad de Sonora)H-Index: 2
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In this research, a theoretical and experimental study of bimetallic gold and platinum nanoparticles is reported. From the green synthesis approach, a combination of rongalite with sucrose is used as a reducing and stabilizing agent. Nanoalloys (Au@Pt) and Pt-core/Au-shell nanoparticles were obtained according to the synthesis process used, and the optical response was analyzed. For nanoalloys, two absorption bands were associated with localized surface plasmon resonances. These were located at ...
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#1C. Yogeswari (National Institute of Technology, Tiruchirappalli)H-Index: 2
#2T.C. Sabari Girisun (BDU: Bharathidasan University)H-Index: 17
Last. R. Nagalakshmi (National Institute of Technology, Tiruchirappalli)H-Index: 2
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By employing different flow rates (0.1 mL/h, 0.4 mL/h, 0.6 mL/h) in an electrospinning route, potassium dihydrogen phosphate (KDP)–polyethylene oxide (PEO) nanofibers with different diameters were successfully prepared. Scanning electron microscopy (SEM) showed the formation of PEO nanofiber morphology with average diameters of 410 nm, 435 nm, and 439 nm for flow rates of 0.1 mL/h, 0.4 mL/h, and 0.6 mL/h, respectively. Using x-ray diffraction (XRD), the presence of KDP in the fiber matrix was co...
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#1Qingyuan Niu (Zhengzhou University of Light Industry)H-Index: 5
#2Zixin Feng (Zhengzhou University of Light Industry)
Last. Lizhen Wang (Zhengzhou University of Light Industry)H-Index: 10
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Reasonable combination of carbon and pseudocapacitive material in a composite electrode can produce a high-performance supercapacitor. However, the nano-structured pseudocapacitive materials tend to assemble randomly into microscale bulky forms during the preparation of composite electrode materials, which suffer from a low specific surface area and a mechanically weak structure, resulting in poor electrochemical performance. In this article, a nitrogen-doped carbon/NiCo2S4 electrode material wa...
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#1Tetyana Torchynska (IPN: Instituto Politécnico Nacional)H-Index: 26
#2R. Cisneros Tamayo (Polytechnic University of Puerto Rico)
Last. A. Escobosa Echavarría (CINVESTAV)H-Index: 3
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The impact of annealing on the emission of InAs quantum dots (QDs) has been investigated in the GaAs/Al0.30Ga0.70As structures with different compositions of the quantum well (QW) layers covered of QDs: GaAs or Al0.10Ga0.75In0.15As. The heat treatments of the QD structures were carried out at 640°C or 710°C for 2 h in an argon atmosphere. To estimate the compositions of QDs and capping QWs, photoluminescence (PL) and high-resolution X-ray diffraction have been applied. The QD structure with the ...
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#1Mona A. EbrishH-Index: 5
#2Travis J. Anderson (NRL: United States Naval Research Laboratory)H-Index: 24
Last. Mark S. Goorsky (UCLA: University of California, Los Angeles)H-Index: 34
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In light of the importance of selective area doping in GaN to enable planar process technology, and to avoid the complications from the etch/regrowth process, ion implantation is the recognizable alternative. Annealing to activate dopant species and repair the damage to a crystal poses a challenge for GaN since the material will decompose to Ga + N2 at atmospheric pressure and relevant temperatures. In this research, in situ high- and low-temperature epitaxial and null ex situ sputtered AlN caps...
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Analytical chemistry
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