The 1 ST international conference on electronics, artificial intelligence and technologies ICEAINT 2021
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Item Design and Analyze of a Monolithic Square Spiral Planar Micro-Transformer(University of Oum El Bouaghi, 2021) Benhadda, Yamina; Derkaoui, Mokhtaria; Mendaz, Kheira; Kharbouch, HayetThe integration of electrical components has been the subject of many researches. In this paper, we design and analyze a monolithic square spiral planar microtransformer integrated in a converter Flyback. Firstly, the geometrical and electrical parameters are presented. Secondly, the efficiency of Flyback is calculated to verify the performance of the converter. The final part of this paper shows the thermal modeling, using the finite element method that allowed us to determine the operating temperature in the materials of this component.Item Thin solid films Structural, electrical and optical properties of Fe-doped CuO deposited by spray pyrolysis technique(University of Oum El Bouaghi, 2021) Daira, Radouan; Zerouali, Madiha; Boudjema, BouzidOur work consists in depositing the copper oxide Fe doped CuO films by spray obtained from the solution of copper chloride CuCl2 and FeCl2 with a percentage of 2, 4; 6 and 8%, on glass substrates at a temperature of 3500c. The thin films obtained are characterized by X-ray diffraction, visible UV spectroscopy and the four-point technique. With X-ray diffraction, high peak intensity is obtained for the preferential orientations of (002) and (111), this intensity increases as the doping rate increases and gives us a more crystalline structure for a doping rate of 8%, also a grain size were estimated. The transmission of our films varies between 55% and 75% with a high absorption in the visible domain, the resistivity of our films increase with the increase of doping rate and the gap energy varies between 4.00 and 1.47 eV. .Item All optical gate based on photonic crystal ring resonator(University of Oum El Bouaghi, 2021) Mokhtari, Lila; Badaoui, Hadjira; Abri, Mehadji; Rahmi, bachir; Lallam, Farah; Moungar, AbdelbassetThe aim of this paper was to propose and design a photonic crystal drop filter based on ring resonators and study its properties numerically. This structure is constituted in a two-dimensional square lattice. The resonant wavelengths of the PCRR proposed are λ = 1.553 μm, the extraction efficiency exceeds 99% with a quality factor of 5177. To study the all-optical OR and XOR logic gate function, we calculated the electric field distribution of the 2D photonic crystal for the 1.553 μm signal light.Item Tin disulphide properties optimisation for solar cells applications(University of Oum El Bouaghi, 2021) Kamli, Kenza; Hadef, ZakariaTin disulphide semiconductors are used in various applications and specifically in solar cells. They are relatively inexpensive compared to other thin films used in the photovoltaic technology. Tin disulphide thin film has been promisingly proposed for this field application as buffer or window layer. In this work, we study the effect of deposition time on the structural, morphological and optical properties of tin disulphide thin films deposited on glass substrates using spray pyrolysis technique. The phase of SnS2 are identified using X-Ray diffraction. A single phase without impurities is observed for the elaborated samples. The optical analyses show that the filmprepared at 65 min present the highest transmittance in the visible region. The obtained results confirm that SnS2 thin films can be good candidates for solar cells devices. These results are of great importance in the prediction of the good application of SnS2 thin films in solar cells.Item Influence of Synthesis Conditions and Al doping, on structural and optical properties of ZnOSnO2 thin film(University of Oum El Bouaghi, 2021) Benkara, S.; Seghairi, N.; Bouabida, S.; Ghamri, H.Zn/Sn nanocomposite deposited on glace substrate by sol gel dip-coating technic, using Zinc acetate and tin chloride as precursors and aluminium chloride as dopping source, absolute ethanol and monoethanolamine (MEA) were used as the solvent and stabilizer, respectively. The quantity of tin in the solution was 0; 25; and 40 at.% Sn, and of aluminium was 0; 0,5; 2; and 4 at.% Al. The films are deposited at two dipping speeds: 100 mm/min and 50 mm/min, and used two dipping cycles: 10 and 5. The structure, optical properties and morphology of nanofilms and the influence of experimental parameters as withdrawal speed and dipping cycles on deposition of ZnO films were studied using X-Ray Diffraction (XRD), UV–vis spectroscopy and optical microscope. The crystalline phase determination from XRD confirmed that the films are composed of hexagonal wurtzite ZnO and tetragonal rutile SnO2 without compound impurities. The doping and dipping speed and cycles effect on optical bandgap is estimated by transmittance spectra.Item A high-sensitivity biosensor based on metal–insulator–metal and rectangular resonator for biochemical detection(University of Oum El Bouaghi, 2021) Bahri, Hocine; Mouetsi, Souheil; Hocini, Abdsselam; Ingebrandt, Sven; Pachauri, Vivek; Ben Slah, HocineHerein, a refractive index sensing based on a novel design of rectangular cavity couple with defect nanorod (RCDN), using metal-insulator-metal (MIM) waveguide is suggested for biochemical application. Herein, the optimized cavity design can provide the best sensing performance. In this work, we have numerically simulated with Finite-Difference- Time-Domain (FDTD) method, by varying small change in the geometric parameter we can bring a significant shift in the sensitivity of the device, also we can manipulate the resonance wavelength. The high sensitivity of the biosensor is 2035 nm/RIU. This device can be utilized in the on-chip detection of biochemical such glucose in water and cancer cells with high sensitivity.Item Influence of temperature and pressure on the atoms ejected path during thin films deposition(University of Oum El Bouaghi, 2021) Refas, S.C.; Bouazza, A.; Belhadji, Y.; Othmani, R.The simulation with Monte-Carlo codes represented the efficiency tools which helps knowing the phenomena that occur inside the vacuum hamber for sputtering process. In this work, the impact of temperature and pressure parameters on the surface structure of thin films are studied in 3D form with the magnetron sputtering technique. Inside a vacuum chamber a 105 particles of Argon (Ar) gas are injected, the target contained the semiconductor silicon (Si), and the substrate is placed with a variable distance from the target .The results obtained in this work show that a high temperature, pressure and a long distance between the target and substrate can negatively affects the path of the atoms ejected away from the target which will cause a decrease in the number of atom arriving on the substrate.Item Theoretical investigation of properties of semiconductors materials based rare earth(University of Oum El Bouaghi, 2021) Kadri, Asma; Bahlouli, Soumia; Hiadsi, SaidIn this work we present the structural, electronic, elastic and magnetic properties of semiconductors based rare earth nitrides ReN (Re=Sc, Y, Gd) in the three crystals cubic structures NaCl (B1), CsCl (B2), and ZB (B3), the properties have been determined by the first principle calculations based of the density function theory (DFT), using the WIEN2k simulation package. We have concluded that the rare earth nitrides ReN with (Re= Sc, Y, Gd) are semiconductors nature for the three compounds with direct bandgap 2.721eV for ScN, 3.044 eV for YN and 1.07eV for GdN compounds, at the normal conditions the rare earth nitrides are stable in the B1 structures, the results of magnetic properties showed that the two rare earth nitrides ScN and YN are nonmagnetic nature, in addition the GdN behave as ferromagnetic compound in rocksalt phase. The calculation of elastic constants proved that the compounds are mechanically stable. Our findings are in good agreement with the other experiments and theories results available.Item Pressure effect on structural, electronic and magnetic properties of the MAs (M = Cr, Mn) binary compounds(University of Oum El Bouaghi, 2021) kolli, Ahlem; Guechi, NacirIn this work, we have studied the structural, electronic and magnetic properties of the MAs (M = Cr, Mn) binary compounds in the zinc blende phase, under hydrostatic pressure using ab initio calculations. The spin polarized calculations were performed using the Pseudo-Potential Plane Wave (PP-PW) method based on the Density Functional Theory (DFT) as implemented in the CASTEP code. The exchange correlation effect was treated using the GGA-PBE approximation. Geometric optimizations were performed for a pressure range between -8.5 and 30GPa. The calculated equilibrium lattice constant (a) for both compounds agrees very well with the available theoretical and experimental reports. According to the bulk modulus (B) values, the CrAs compound with B = 64.53 GPa is more resistant to volume changes than the MnAs compound with B = 45.98 GPa. The electronic populations, energy band structures and density of states were calculated to determine the magneto-electronic properties. Analysis of the obtained results shows that these compounds exhibit a half-metallic ferromagnetic behavior with a band gap in the minority spin states resulting from the p-d hybridization. The total magnetic moment of MAs compounds comes mainly from the incomplete d-orbital of the Cr (Mn) atoms, and it is almost equal to an integer values of 3 μB (4 μB) per unit cell which is consistent with the Slater-Pauling rule. the halfmetallicity in the studied compounds is generally maintained over a wide pressure range. These results would help in incorporating MAs (M = Cr, Mn) compounds in spintronic devices.Item Investigation of structural and optical properties of mixed phase nanoparticles titania synthesized by simple sol gel process(University of Oum El Bouaghi, 2021) Zedek, Rezika; Djedjiga, Hatem; Megherbi, Mohamed; Said Belkaid, MohammedThe purpose of this study is to calculate the band gap value of mixture phases of TiO2 nanoparticless. The direct and indirect band gap of the samples can be estimated from measurements data of diffuse reflectance spectrascopy. Iron-doped titanium dioxide (TiO2) nanoparticles were prepared via a facile and economical sol gel procedure. The prepared samples were characterized using X-ray diffraction (XRD) and UV-Vis diffuse reflectance spectroscopy. The obtained results by DRX displayed that samples annealed at 550 oC for 3h crystallized into mixture phases. The optical properties were investigated by UV-vis diffuse reflectance spectra (DRS). Using the DRS data, direct and indirect bandgap of the samples was determined by applying the Kubelka–Munk (K-M) equation. Graphics representations were used to calculate Eg: F(R) versus hv, F(R) versus λ, (F(R) hν)^n versus hv with n = ½ for an indirect allowed transition and n = 2 for a direct allowed transition). Moreover the UV-Vis light-diffuse reflectance spectroscopy analysis depicted that the absorption region of Fe-doped TiO2 was shifted to the visible-light range, which was attributed to incorporation of iron into the TiO2 lattice during chemical reaction.Item Systematic study of structural and magneto- electronic properties of Sr1-x Tix S alloys for spintronic applications(University of Oum El Bouaghi, 2021) Elaggoune, Warda; Meddour, AthmaneIn this work, the structural and the magneto-electronic properties of the Sr1-xTixS compounds at dopant concentration x=0.25, 0.50, and 0.75 in the rocksalt ferromagnetic phase are studied using first-principles calculations based on density functional theory. The structural properties of the three compounds calculated indicate promising findings. The electronic band profiles, the density of states plots, and the integral magnetic moment validate the half-metallic feature only at x=0.25. As a result, the Sr0.75Ti0.25S compound is the most promising spintronic material in the series.Item Effects of doping profile and temperature on the solar cell performances(University of Oum El Bouaghi, 2021) Benchiheb, Asma; Benchiheb, Nedjoua; Saidi, YasminaIn this paper, an optimization of the structure of a silicon solar cell is presented. This study takes into account the effects of temperature and doping level of each region of the device. As the simulation with the COMSOL software allowed us to demonstrate the link between the technological structure of an N + NP type solar cell and the various characteristics and parameters obtained at the output when it is subjected to a polarization. Thus, we considered different doping levels and thicknesses of the N + layer. It has been observed that the effects of temperature are negligible for low doping levels of the N + layer. However, in heavy doping, the benefit of reducing its thickness below 0.018 μm is demonstrated, especially for the high temperature operating range. Concerning the base, we observed that its thickness must be maintained in the order of 100 μm.Item Electrochemical synthesis of p-Cu2O thin films on ITO-coated glass substrates for photovoltaic solar cells(University of Oum El Bouaghi, 2021) Kihal, Rafiaa; Rahal, Hassiba; Rahal, Samia; Affoune, Abed MohamedCuprous oxide (Cu2O) thin films have been prepared on ITO-coated glass substrates by electrodeposition technique from an aqueous solution containing copper acetate and sodium thiosulfate. Electrochemical kinetics of Cu2O films were investigated by cyclic voltammetry. The obtained films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV/Vis spectroscopy and electrical measurements. The X-ray diffraction results indicated that the synthesized Cu2O thin films had a good crystalline of deposited Cu2O thin films with a pure cubic structure. Morphological study showed a better compactness structure composed of pyramid shape. Optical band gap was found to be 2.103 eV. Electrical properties of Cu2O films showed a p-type semiconductor with low electrical resistivity of 100 Ω cm, carrier concentration of 3.62×1015 cm-3and mobility of 17.24 cm2 V-1s-1.Item A new design of high-sensitive photonic crystal biosensor based on ring-shape holes for detecting glucose concentration(University of Oum El Bouaghi, 2021) Daas, Assia; Mouetsi, Souheil; Hocini, Abderraouf; Hocini, Abdesselam; Lariouri, FatehIn this work an optical sensors has been designed and studied with different parameters to select the best result of Q factor and sensitivity; for that, we choose a 2D photonic crystal (PhC). The refractive index (RI) sensor is formed by a pointdefect resonant cavity in the quasi-sandwiched waveguide with a hexagonal lattice of air holes. The properties of the sensor are simulated using a couple of two methods finite-difference timedomain method (FDTD) and the plane wave method (PWE). The calculation results show that a change in ambient RI is apparent; the sensitivity of the sensor is achieved. The objective of our research was primarily modeling and optimization geometry of a first coupling path between a waveguide and a ring resonator with base of photonic crystals in order to improve the coupling properties in this structure. It is in this context that we have exploited all the parameters already developed for improve the biodetection properties in a photonic crystal-based structure. The role of our design is to sens small RI changes for detecting glucose concentration using resonant microcavity (RMC).Item Structural stability, electronic, and mechanical properties of new stable phases for the ternary alloy MgxCd1-xO(University of Oum El Bouaghi, 2021) Djezzar, Nor El Houda; Driss-Khodja, Kouider; Amrani, BouhalouaneWith the development of technology, finding new crystallographic phases with remarkable properties and that are easy to be elaborated experimentally is highly recommended. The II-VI semiconductors are very interesting materials for various applications due to the possibility to preselect and control their physical properties; which can be realized by varying the atomic concentration to form alloys. Herein, density functional theory (DFT) calculation has been performed for the alloy MgxCd1-xO to investigate the thermodynamic, dynamical, and local stability of MgCdO2 for 50% of concentration and MgCd3O4 for 25%. MgCdO2 is stable in a tetragonal phase whereas, the MgCd3O4 is not stable in the same cubic phase predicted for 75% (Pm-3m) in the previous work, instead, it is stable in another cubic phase (P-43m). the elastic constants and mechanical properties predict that adding Mg atoms to the alloy enhance the resistance of the material.Item Optical and structural properties of copper doped zinc oxide thin films prepared via spray pyrolysis method(University of Oum El Bouaghi, 2021) Touati tliba, M.; Benhaoua, B.Un doped and copper doped ZnO (0-5 wt.%) were synthesized by spray pyrolysis technique (homemade) annealed at 375°C. Zinc acetate and copper chloride were used as sources precursor of ZnO and Cu doping, respectively. Optical and structural properties of elaborated thin films were examined by using UV-visible and X-ray diffraction. The optical study indicate that the average transmittance of all samples was more than 81% in the visible region and become more transparent after doping. Optical gap energy was observed to vary between 3.25 - 3.28eV. The structural analysis showed formation a hexagonal wurtzite structure ZnO with a strong (002) preferred orientation except (for 0.0 and 1.5 wt%), while the crystallite size is estimated 23 to 29nm for 0-5wt.% Cu doped ZnO thin films.Item Magneto-optical properties of magnetic photonic crystal fiber of Cerium substituted yttrium iron garnet medium (Ce -YIG) filled with magnetic fluid Fe3O4(University of Oum El Bouaghi, 2021) Ghalem, Salim; Lebbal, Mohamed Redha; Bouchemat, MohamedIn this work, we propose a photonic crystal fiber based on magneto-photonic crystal (MPC), formed by a triangular ring of circular air holes filled with magnetic fluid (MF) based on magnetic nanoparticle Fe3O4, in a Cerium substituted yttrium iron garnet medium (Ce -YIG), in this fiber, we have theoretically studied the conversion mode, reported and studied the effect of some parameters such as the radius and using a beam propagation method (BPM) in two dimensions. In our proposed structure the maximum conversion modes ratio equal to 98% with low coupling length Lc=15μm is obtained for gyrotropy g=0.35 and Faraday Rotation FR=1900 × 104 deg ∕cm.Item Effects of boron diffusion on titanium silicide formation(University of Oum El Bouaghi, 2021) Karboua, Houcine; Boulakroune, M’hamed; Fortaki, TarekSecondary ion mass spectrometry (SIMS) has been used to investigate Boron diffusion in Titanium silicide layers for several annealing conditions of duration and temperature. Experimental profiles were simulated using a model based on the famous Fick’s laws and the effect accompanying boron diffusion during silicidation like segregation and clustering. The comparison between simulation results and those of the literature in the same annealing conditions shows a good agreement between our results and those of other works. This explains that boron diffusion in titanium silicide depends on segregation, clustering and the solid solubility exceeds.Item A Low-power and high sensibility of the smart CMOS(Si and 4H-SiC) temperature sensor in 130nm technology(University of Oum El Bouaghi, 2021)One of the many applications of CMOS technology is the design the temperature sensors. In this paper, the electrical performance of smart CMOS(Si and 4H-SiC) temperature sensor in 130 nm technology have been studied using OrCAD PSpice software. The proposed CMOS circuit is developed to provide the first smart temperature sensor based on two different semiconductor technologies (Si and 4H-SiC) integrated on the same chip. These technologies are activated separately according to the temperature range (Low and High). The study of this smart sensor have shown that they operate under a low voltage less than 0.8 V and ultra low power of order nW. In addition, it is characterized by high sensitivity and good linearity across a temperature range from -120°C to 500°C. It is expected that the use of Si and 4H-SiC technologies for both temperature ranges (low and high) respectively will increase the life of this sensor.Item Novel approach for a ladder network model of the transformer winding high-frequency parameters identification based on FRA data(University of Oum El Bouaghi, 2021) Chanane, Abdallah; Belazzoug, MessaoudThe identification of the high-frequency ladder network model (LNM) parameters for the transformer winding is the way to confirm its actual condition. This paper aims to present the application of one of the latest approach algorithms, namely, Particle Swarm Optimization with Invasive Weed Optimization (PSO-IWO) method for the identification of the high frequency LNM parameters for the transformer winding. The physical realizability of the LNM is ensured and it is based on the frequency response analysis FRA data and some terminal measurements of a transformer winding. The results are agreement and indicate that the identified model, is superior in terms of representing the physical behavior of the transformer winding in high frequency.