Several mitigation processes involving carbon dioxide injection into adsorbent materials such as zeolites, are currently very popular as research studies. The objective of our present work is to apply the green synthesis method of molecular sieve with rice husk ash and metakaolin in four individual Si/Al ratios (20, 40, 60 and 80). The micrographs obtained with the aid of SEM (sample 80-ZSM-5) revealed

The effects of alpha particles’ irradiation on the performance of simplified PERC silicon solar cells are studied through technology computer aided design (TCAD) simulations. The methodology adopted in this work incorporates the non-ionizing energy loss (NIEL) phenomenon to understand the radiation effects, which does not depend on extensive irradiation experimentations. Simulation results show that

We describe challenges of the epitaxial Si-cap/Si 0.75 Ge 0.25 //Si-substrate growth process, in view of its application in 3D device integration schemes using Si 0.75 Ge 0.25 as backside etch stop layer with a focus on high throughput epi processing without compromising material quality. While fully strained Si 0.75 Ge 0.25 with a thickness >10 times larger than the theoretical thickness for layer

The optoelectronic and transport characteristics of CsYbX 3 (X = Br, Cl) are computed for clean energy harvesting. The structural stability has been anticipated by Goldsmith tolerance factor and thermodynamic stability by formation energy. The band gaps 1.66 eV and 1.44 eV for CsYbCl 3 and CsYbBr 3 are observed in visible energy region, which show their significance for optoelectronic and solar cells

We investigated the effect of the conducting substrate on the performance of GaAs-based VCSELs, where the substrates were 230 μ m-GaAs (reference), 10 μ m-GaAs/metal, and 0.5 μ m-GaAs/metal. The VCSELs with the 10 μ m- and 0.5 μ m thick GaAs/metal-substrates produced higher light output power than the reference. For example, the thin GaAs/metal substrate samples showed 16.3%–16.7% higher light output

Oxygen vacancy defects play an important role in determining the properties of zinc oxide (ZnO) film. In this study, ZnO film prepared by a high-deposition-rate spatial ALD process was annealed in an oxygen-rich ambient. The variation of oxygen vacancy defects was analyzed. The results show that oxygen vacancy defects were suppressed by the annealing treatment, particularly at 500 °C–700 °C. As a result

Bulk Micromachining on some stable high-index silicon substrates are ever more interesting because they are opening new possibilities for the development of novel 3D microstructures and surface nanostructures useful for diverse quantum applications. Considering crystallography-oriented etching, several mechanisms are poorly understood and hence, some experimental work leading to 3D device fabrication

In this work, vertically oriented well-aligned palladium-adsorbed ZnO (PZO) nanorod (NR) arrays were successfully prepared on indium-tin-oxide (ITO) glass substrates via an aqueous solution method with photochemical synthesis. The nanostructures of the PZO NRs were characterized via a field-emission scanning electron microscopy (FE-SEM), a high-resolution transmission electron microscopy (HR-TEM),

In this study, we proposed and experimentally demonstrated the blue laser diode-based remote solid-state lighting using plastic optical fiber and phosphor film. The light-emitting part’s vicinity is free of electricity, which eliminates the risk of explosion and electromagnetic interference (EMI) and thus can find wide applications in hazardous or sensitive locations, such as gas plants and aircraft

In comparison with enzymatic detection, non-enzymatic detection of glucose has lower cost, better stability, and simpler immobilization operation, but it still lacks sensitivity. Rational design and controllable synthesis of materials with unique morphology are important for non-enzymatic glucose detection. Herein, graphene oxide (GO) is utilized as structure-directing agent for the hydrothermal synthesis

In this work we study the epitaxial Si growth with Si 2 H 6 for Ge surface passivation in CMOS devices. The Si-caps are grown on Ge in the hydrogen desorption limited regime at a nominal temperature of 400 °C. We evaluate the process window for the interface state density and show that there is an optimal Si-cap thickness between 8 and 9 monolayers for D it < 5·10 11 cm −2 eV −1 . Moreover, we discuss

Inorganic CsPbBr 3 and CsPbBr x I (3−x) films were prepared by spray-coating on the glass. The crystalline structure and optical properties were investigated for these perovskites films. The results show that the samples at 180 °C have pure monoclinic perovskite phase and exhibit strong single photoluminescence (PL). The surface morphology and optical features of the perovskites films could be remarkably

By 2050, the scale of installed solar panels must reach about 100 TWp in order to make a tangible impact on our energy mix and carbon emissions. Thin-film amorphous silicon panels are the only technology today capable of 100 TWp installation. Wafer silicon panels could reach 100 TWp if the silver in silicon panels is replaced with copper or aluminum. Cadmium telluride and copper indium gallium selenide

During the electrochemical preparation process, the electron transport rate in the PbO 2 active layer could be greatly increased resulting from reduction in the oxidation of the Ti substrate, which effectively improved the service life and catalytic degradation efficiency of the PbO 2 Dimension Stable Anode (PbO 2 DSA) electrode. Through adding nano-acetylene black (ACET) and polyvinyl pyrrolidone

Two-dimensional (2D) group-Ⅳ monochalcogenides MX (M = Ge, Sn; X = S, Se) are isoelectronic and isostructural analogues to phosphorene. Due to superior oxidation resistance relative to black phosphorus, MX are recently explored to be potentialsubstitute of phosphorene for highly sensitive gas sensor applications. In this work, nanoflakes of tin monosulfide (SnS) was synthesized by a one-step solvothermal

Ga 2 O 3 films were respectively deposited on m- and r-plane sapphire substrates by LP-MOCVD. The growth pressure greatly influenced the surface morphology and the grain shape, and the grain size obviously decreased with the increasing growth pressure. XRD results indicated that a higher growth pressure helped to suppress the polycrystalline orientation of β -Ga 2 O 3 films grown on m-plane sapphire

We synthesized Dy 3+ doped SrLaGa 3 O 7 phosphors via a sintering process at 1350 °C under atmosphere. The X-ray diffraction data demonstrate that they have the pure tetragonal phase, meaning the successful substitution of Dy 3+ in SrLaGa 3 O 7 host. Monitoring at 572 nm, Dy 3+ doped SrLaGa 3 O 7 phosphors show a series of excitation bands within 275–475 nm. Exciting at 342 nm, Dy 3+ doped SrLaGa 3

GNRFET Graphene Nano-Ribbon Field-Effect Transistor is sensitive to geometric parameters. Therefore, changing parameters circuit characteristics can be improved or degraded. In this study, we propose a new approach to optimizing the GNRFETs. The effect of geometric and process parameters such as chirality, channel length, width, line edge roughness, oxide thickness, and doping on characteristics of

Electrochemistry and solar photovoltaics are traditionally considered to be in two different domains of science and technology. However, electrochemistry will play an indispensable role in sustaining the production and deployment of solar panels in the coming decades. This paper presents three examples on how electrochemistry will lead to solutions to several roadblocks to sustainable solar photovoltaics

The ion implantation of H + and D + into Ga 2 O 3 produces several O–H and O–D centers that have been investigated by vibrational spectroscopy. These defects include the dominant V Ga(1) -2H and V Ga(1) -2D centers studied previously along with additional defects that can be converted into this structure by thermal annealing. The polarization dependence of the spectra has also been analyzed to determine

Silicon carbon nitride (SiCN) compounds have aroused great interest as dielectric materials for direct bonding because of the high thermal stability and high bond strength, as well as its Cu diffusion barrier properties. While wafer-to-wafer direct bonding, including the dielectric deposition step, is generally performed at high temperature (>350 °C), applications such as heterogeneous chips and DRAMs

Electrochromic device plays a key role in energy efficiency management and modern display technology. As a cathodic coloration material, Nb 2 O 5 is one of the important material used in the electrochromic device. The capacity of a layer is related with the intercalation and deintercalation behavior. Graphene Doping is a promising process for the high-capacity ion storage application. Graphene is a

During the last decade, there has been considerable interest of researchers towards the use of two-dimensional (2D) materials for the electronic device implementations. The main driving force is the improved performance offered by these 2D materials for electronic device operation in nano-scale regime. Among these 2D material, silicene (the 2D of silicon) has emerged as preferred choice because of

SiC focus rings are mount on the stage at the surround of wafer in the reactive ion etching chamber, in order to make the etching rate uniform. SiC is used for the material of focus ring because it has higher plasma resistance than Si. We investigated a new method to recycle SiC without using the chemical vapor deposition (CVD) method. The recycling process consists of grinding, dry cleaning, hot isostatic

Femtosecond laser processing gradient wettability is emerging as a powerful technology to control the wettability of surfaces due to its several advantages such as low pollution, good stability, and short processing cycle. A micro-textured surface with a stripe groove structure was processed on the surface of an AlN ceramic using a 1030 nm femtosecond laser. The surface roughness, the chemical composition

In this work, we fabricated a novel (Zinc Oxide-Nickel Oxide) ZnO-NiO/Si (silicon) solar cells using ZnO-NiO thin films. We synthesized the nanocomposite films at different mixing concentrations and deposited them on silicon. We completed the fabrication of the solar cells by adding silver front and back contacts. The objective of this work is to increase power conversion efficiency for solar cells

A novel stainless steel/ α -PbO 2 -ZrO 2 / β -PbO 2 -ZrO 2 (30 g l −1 )-CNT (10 g l −1 ) modified by carbon nanotube (CNT) and ZrO 2 co-doping was prepared by pulse electrodeposition. The effect of ZrO 2 and CNT concentration on the chemical composition, surface morphology, electrocatalytic activity and corrosion resistance of the composite anode materials was studied by anodic polarization curve (LSV)

Cu direct bonding has been achieved at 150 °C by using (111)-oriented nanotwinned Cu (nt-Cu) because it has the fastest surface diffusivity. In this study, nt-Cu was bonded at even lower temperature of 120 °C by roughening one of the nt-Cu surfaces. However, the flat-to-flat nt-Cu could not be bonded at the same temperature. This result violates a bonding concept that “for good wafer bonding, the contact

We compared the long-term wear performance of 2 different PPS retaining ring materials (E-PPS and O-PPS) provided by 2 different suppliers. After 4 h of wear, O-PPS resulted in higher values of mean pad summit height as compared to E-PPS (26.4 ± 1 vs 23.9 ± 1 μ m, respectively). We believed this was due to excessive pad fragment generation (confirmed by its associated higher level of pore obscuration)

The contamination behavior of ceria particles (50 and 100 nm) with oxide surfaces at pH 4 and 8 was studied using dipping and polishing conditions. Higher contamination at pH 4 than pH 8 was observed for dipping cases. In contrast, pH 8 conditions produced higher contamination than pH 4 for polishing cases. The difference in the contamination between dipping and polishing could be attributed to electrostatic

Copper to copper wafer hybrid bonding is the most promising technology for three-dimensional (3D) integration. In the hybrid bonding process, two silicon wafers are aligned and contacted. At room temperature (RT), these aligned copper pads contain radial-shaped nanometer-sized hollows due to the dishing effect induced by chemical-mechanical polishing (CMP). These wafers are annealed for copper to expand

Interleukin-6 (IL-6) as a pro-inflammatory cytokine demonstrate a critical role in the inflammatory response. Especially, the high levels of IL-6 measured in plasma have been associated with pathological inflammation. In this report, new molecularly imprinting biosensor on graphene quantum dots (GQDs)/functionalized multi-walled carbon nanotubes (f-MWCNTs) composite were prepared for IL-6 protein detection

The effect of various amounts (1, 2, and 4 wt%) of hexagonal nano boron nitride on the mechanical properties of carbon/basalt fabric reinforced epoxy hybrid composite laminates has been investigated through experimental methods. The hybrid composites were fabricated using hand lay-up and vacuum infusion techniques. The produced hybrid nanocomposites were characterized by SEM-EDS Mapping, XRD, and FT-IR

Single-crystal, low-cost, low-temperature, hydrothermal synthesis ZnO nanorods were grown on ZnO fine grained random nanocrystalline seed layers prepared by atomic layer deposition (ALD) and benchmarked against spin coating techniques for seed layers. As the growth temperature increased to 90 °C, more nanorods were observed on the samples. Increasing the growth time from 16 h to 24 h resulted in higher

Breath ammonia is an important biomarker linked to liver malfunction. Acetone is the most abundant compound in the breath, acts as major interference for selective detection of ammonia gas. Here, a novel method based on viscosity modulation of the silicone oil absorbent is reported for selectivity improvement of ammonia over acetone gas. ATD-GC-MS and T201 ammonia analyzer are used to measure the absorption

This work explored the performance evaluation of high-k gate stack on the analog and RF figure of merits (FOMs) of 9 nm Silicon-on-Insulator (SOI) FinFET. The results have been observed by replacing high-k dielectric with SiO 2 material between gate and fin. The dielectrics investigated in this exploration are Silicon Dioxide (SiO 2 ), Silicon Nitride (Si 3 N 4 ), Hafnium Dioxide (HfO 2 ), and Aluminium

Recent advances in graphene nanoribbon (GNR) field-effect transistors (FETs), with finite band-gap, have shown great promise for their use in ultra-scaled, low power and high speed device applications. Here, we use quantum mechanical simulations, based on non-equilibrium Green’s function (NEGF), to study the electrical characteristics of a sub-10 nm gate length GNRFET with double gate structure. Tight-binding

Magnesium doped copper chromites spinel nanoparticles (Cu 1−x Mg x Cr 2 O 4) where x = 0.2, 0.4, 0.6, and 0.8 is synthesized by sol-gel method and characterized by different techniques like EDS, SEM, Raman spectroscopy, and Photoluminense. Various parameters affecting the sample techniques like temperature and Concentrations. The crystal phase of CuCr 2 O 4 is tetragonal having a space group is 121/amd

This work investigates temperature effects of low-damage plasma (LD plasma) treatment for nitrogen-modification graphene. Different from traditional nitrogen-modification graphene achieved by ammonia plasma, in this work, it is accomplished by the LD plasma with pure nitrogen. The analyses of Raman and XPS spectra show that the concentration of modified nitrogen raised with the substrate temperature

The Er 3+ /Yb 3+ co-doped phosphate glasses with GeO 2 modification (PGs) were successfully prepared by melt-quenching method. Their physical parameters were investigated such as density, refractive index, glass transition temperature and coefficients of thermal expansion. The phenomenological intensity parameters Ω t ( t = 2, 4, 6) of the PGs have been calculated by the Judd-Ofelt theory. The relationship

Health care industries are progressing towards improving the health condition of the society, by developing new medical devices with innovative technologies. The advancement in medical technology has brought to reality developing sensor-based medical devices, which are implantable as well as wearable. The present challenge is designing in terms of low noise, low power, low area design techniques, considering

In this study; an easy, practical, and selective sensor has been developed for the electrochemical determination of riboflavin. To prepare the modified electrode, the gold nanoparticle was deposited on the pencil graphite electrode (AuNP/PGE) by the method of chronoamperometry at −3.0 V for 30 s in 0.5 M H 2 SO 4 solution containing 10 mM tetrachloroaurate. Functionalized multi-walled carbon nanotube

Removing organic dyes from wastewater is an important task of environmental remediation. In this work, a nano composite α -Fe 2 O 3 /graphene oxide ( α -Fe 2 O 3 /GO) was fabricated with a facile hydrothermal process. The as fabricated α -Fe 2 O 3 /GO was characterized and tested as adsorbent for removing two typical ionic dyes Congo red (CR) and methyl violet (MV) from aqueous solutions. The interaction

Electrochemical Capacitance Voltage Profiling (ECVP) is one of the most widely used characterization methods in semiconductor industry to measure the activation of dopants in doped semiconductor materials owing to its low-cost and easy-to-use features. Today, there are some specific industrial needs, for instance reduction of the contact resistance in advanced transistors, for which heavily-doped semiconductor

The effects of silica abrasives of five different particle sizes (10 nm, 40 nm, 60 nm, 80 nm and 100 nm) on the removal rate of silicon wafers were studied. The experiments were performed under two conditions, by taking the abrasive particles of uniform size and of two different sizes. The mixture of abrasive particles of two sizes increased the removal rate of the silicon wafer, and this improvement

In recent years, the fabrication of transition metal dichalcogenide (TMD) alloys is drawing attention due to their controllable bandgap. Fabrication of MoS 2(1− x ) Te 2 x is expected to be difficult due to its thermal instability although it shows wide tunable bandgap range. In this study, MoS 2(1− x ) Te 2 x fabrication is carried out by sputtering and post-deposition thermal treatment in chalcogen

Iron-based soft magnetic composites (SMCs) were prepared by two-step ball milling with sodium silicate and ferroferric oxide. The presence of the precoated silicate layer has increased the resistivity of the powder surface, which also improved the agglomeration of ferroferric oxide. The addition of magnetic ferroferric oxide improves the dilution effect. Combining the advantages of both sodium silicate

Nano-structure Barium Titanate (BaTiO 3 ) doped with 1 mole% Sm 3+ and Gd 3+ ions have been synthesized by modified sol-gel process. The tetragonal perovskite structure has been demonstrated by means of X-ray diffraction and selected area electron diffraction obtained by high resolution transmission microscopy. The XRD and HRTEM have been used for estimation the grain size, which found to be around

Herein, an integrated device that comprises inorganic kesterite solar cells and Li-ion batteries (LIBs) has been proposed for application in fast photo-charging power systems. LiFePO 4 and Li 4 Ti 5 O 12 were selected as the battery electrode materials and six kesterite solar cells connected in series were fabricated to satisfy the charging voltage required for LIBs. Photo-charging was conducted at

A SiC crystal mixed with 4H-, 6H-, and 15R-SiC polytypes and their wetting properties were characterized using precisely dispensed de-ionized (DI) water drops. Contact angles of a DI water drop on SiC surfaces were quantitatively determined by analyzing the sideview image of a DI water drop in contact with the SiC substrate with mixed polytypes using image analysis software. The contact angle measurements

In this study, we have developed a paper-based electrochemical biosensor for dopamine (DA) detection. For this purpose, a screen-printed graphene electrode (SPGNE) was printed on a paper substrate, and the electrode surface was modified with PEDOT:PSS/RGO. The fabricated sensor was characterized by analyzing the capacitance, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS)

Nickel/copper calcium titanate (Ni/CCTO) cermets with variated Ni content were prepared. The abrupt shift of ac conductivity, reactance and complex permittivity occurred in composites. Epsilon-negative property is an intrinsically physical performance of inductive character which was explained by low-frequency plasmonic state of Ni networks. Negative value of real permittivity in metacomposites reached

Noble metal nanoparticles, usually dispersed in a mesoporous support, have widespread applications. However, uploading nanoparticles into mesoporous materials and preventing the nanoparticles from aggregation during the fabrication and application processes remain major challenges. Herein, we report a novel, simple and low-cost method for fabrication of Pt-nanoparticle-loaded mesoporous alumina coating

The pathophysiological changes in cells are mainly focusing on the ionic regulations like hyperpolarization, depolarization etc. The real-time monitoring of these changes in ionic behavior is one of the challenging areas in the biosensor field. A field-effect transistor (FET) based sensor system shows an exceptional advantage in noninvasive real-time monitoring of cellular changes. In this study, we

A low-cost sol-gel process was used to synthesize hybrids of graphene and titania without the use of surfactants or additives. A less frequently used titania precursor, titanium oxychloride, was used to yield TiO 2 nanoparticles and dispersed graphene was used in the reaction mixture to provide a surface for the nano-sized titania particles’ dispersion. The obtained samples after filtration and drying

Mn 4+ , Cr 3+ single-doped and Mn 4+ , Cr 3+ co-doped BaMgAl 10 O 17 phosphors were synthesized via a conventional high-temperature solid-state reaction method. Both Mn 4+ and Cr 3+ ions show broad excitation band extending from ultraviolet to visible light range, and the emission band peaks at 660 nm for Mn 4+ ion and at 694 nm for Cr 3+ ion. The relative intensity of the luminescence of Mn 4+ and

We proposed a HF/HCl/H 2 O system with manganese dioxide (MnO 2 ) particle as the oxidant to obtain high-performance texturization on multi-crystalline silicon (mc-Si) wafers. The texturization obtained by the HF/HCl/H 2 O/MnO 2 system had a more uniform distribution and a lower surface reflectance than that obtained by the conventional HF/HNO 3 /H 2 O system, especially on the surface of diamond wire

A novel red-emitting Rb 2 KGaF 6 :Mn 4+ phosphor with octahedral particulate morphology was presented. The XRD Rietveld refinement results indicate that the phosphor crystallized into the cubic phase of Fm ##IMG## [http://ej.iop.org/images/2162-8777/9/12/126001/jssabc835ieqn1.gif] {$\overline{3}$} m space group with double perovskite structure. The photo-luminescence spectrum exhibits intense red emission

The reverse leakage current under high reverse voltage of a Ni/ β - Ga 2 O 3 Schottky barrier diode (SBD) is numerically modelled and compared to measurements. universal Schottky tunnelling, thermionic emission and image-force lowering were taken into account. Furthermore, when type conversion under high reverse voltage has occurred at the top interface between Ni and β - Ga 2 O 3 and the SBD behaved

CsPbBr 3 :xBi 3+ quantum dot glass was prepared by using traditional melting-quenching and heat treatment processes. The effects of Bi doing on the sinter of the precursor of glass and the crystalline of the perovskite quantum dot were discussed detailly. By doping Bi 2 O 3 into the borosilicate glass matrix, the melting temperature was reduced to 900 °C. The tunable emission of CsPbBr 3 quantum dots