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Fabrication of a novel MOS diode by indium incorporation control for microelectronic applications

Journal of Semiconductors 2017年第6期38卷 66-74页

作者： M.Benhaliliba C.E.Benouis M.S.Aida a.ayeshamariam Material Technology Department Physics Faculty USTOMB University BP1505 Oran Algeria Thin Films & Plasma Laboratory Physics Department Mentouri University 25000 Constantine Algeria Department of Physics Khadir Mohideen College Adirampattinam 614701 India

Control of the electronic parameters on a novel metal–oxide–semiconductor（MOS）diode by indium doping incorporation is emphasized and *** electronic parameters,such as ideality factor,barrier height（BH）,series resistance,and charge carrier density are extracted from the current–voltage（I–V）and the capacitance–voltage（C–V）*** properties of the MOS diode based on 4%,6% and 8% indium doped tin oxide are largely *** Ag/SnO2/nSi/Au MOS diode is fabricated by spray pyrolysis route,at 300℃ from the In-doped *** was grown onto n-type silicon and metallic（Au）contacts which were made by thermal evaporation under a vacuum@10^-5 Torr and having a thickness of 120 nm and a diameter of 1 *** by the Cheung-Cheung approximation method,the series resistance increases（334–534Ω）with the In doping level while the barrier height（BH）remains constant around 0.57 *** Norde calculation technique gives a similar BH value of 0.69 V but the series resistance reaches higher values of 5500Ω.The indium doping level influences on the characteristics of Ag/SnO2：In/Si/Au MOS diode while the 4% indium level causes the capacitance inversion and the device turns into p-type material.

关键词： indium incorporation MOS diode current-voltage measurements capacitance-voltage characteristics microelectronic parameters

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Novel synthesis of cerium oxide nano photocatalyst by a hydrothermal method

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Journal of Semiconductors 2021年第12期42卷 35-43页

作者： Fowziya Shaik Ali Faisal Al Marzouqi AAfroos Banu M.Ismail Fathima A.R.Mohamed Jahangir K.Mohamed Rafi a.ayeshamariam Department of Chemistry Khadir Mohideen CollegeAdirampattinam 614701(Affiliated to Bharathidasan UniversityTiruchirappalli)India Department of Process Engineering International Maritime College OmanFalaj Al QabailSuharOman Department of Physics Arul Anandar College(Auto)KarumathurMadurai 625514India Biyaq Oilfield Services LLC Mina Al Fahal PC116MuscatSultanate of Oman Research Department of Botany Jamal Mohamed College(Auto)(Affiliated to Bharathidasan UniversityThiruchirappalli)-620020India Research Department of Physics Khadir Mohideen College(Affiliated to Bharathidasan UniversityThiruchirappalli)Adirampattinam-614701India

Crystalline cubic cerium oxide nano particles have been synthesized from cerium(Ⅲ)nitrate(Ce(NO_(3))_(3).6H2_(O))and sodium hydroxide by a hydrothermal *** effect of three different molar ratios of the NaOH precipitating agent on structural,optical,and photo catalytic activity was *** synthesized cerium oxide nano particles were characterized by X-ray diffraction(XRD),a UV-vis spectrometer,scanning electron microscope(SEM),energy-dispersive X-ray spectroscopy(EDAX),Raman spectroscopy and X-ray photo electron spectroscopy(XPS).According to the findings,hydrothermally synthesized cerium oxide NPs have a high efficiency for photocatalytic degradation of methylene blue when exposed to UV *** water pollution is the major issue of the *** get fresh water,humans could search the resources to purify the water in simple way and degradation is the one of the methods to purify salt water.

关键词： cerium oxide nano particles photo catalysis hydrothermal process

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Synthesis and characterization of ZnO–CuO nanocomposites powder by modified perfume spray pyrolysis method and its antimicrobial investigation

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Journal of Semiconductors 2018年第3期39卷 1-7页

作者： D.Saravanakkumar S.Sivaranjani K.Kaviyarasu a.ayeshamariam B.Ravikumar S.Pandiarajan C.Veeralakshmi M.Jayachandran M.Maaza Research and Development Center Bharathiyar UniversityCoimbatore641046India Department of Physics SBM College of Engineering&TechnologyDindigul624001India UNESCO-UNISA Africa Chair in Nanoscience's/Nanotechnology Laboratories College of Graduate StudiesUniversity of South Africa(UNISA)Muckleneuk RidgePretoriaSouth Africa Nanosciences African network(NANOAFNET) Materials Research Group(MRG)iThemba LABS-National Research Foundation(NRF)Somerset WestWestern Cape ProvinceSouth Africa Department of Physics Khadir Mohideen CollegeAdirampattinam614701India Department of Physics Devanga Arts CollegeAruppukkottai626101India Department of Physics Sethu Institute of TechnologyPullorKariapatti626115India

Pure ZnO, ZnO–CuO nanocomposites can be synthesized by using a modified perfume spray pyrolysis method（MSP）. The crystallite size of the nanoparticles（NPs） has been observed by X-ray diffraction pattern and is nearly 36 nm. Morphological studies have been analyzed by using Field Emission Scanning Electron Microscopy（FESEM） and its elemental analysis was reported by Elemental X-ray Analysis（EDX）; these studies confirmed that ZnO and CuO have hexagonal structure and monoclinic structure respectively. Fourier Transform Infrared（FTIR） spectra revealed that the presence of functional frequencies of ZnO and CuO were observed at 443 and 616 *** average bandgap value at 3.25 e V using UV–vis spectra for the entitled composite has described a blue shift that has been observed here. The antibacterial study against both gram positive and negative bacteria has been studied by the disc diffusion method. To the best of our knowledge, it is the first report on ZnO–CuO nanocomposite synthesized by a modified perfume spray pyrolysis method.

关键词： MSP method XRD FTIR FESEM CuO nanoparticles

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Morphology and Optical Measurements of Nanostructured In2O3:SnO2Nanoparticle

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World Journal of Nano Science and Engineering 2012年第1期2卷 6-12页

作者： A. ayeshamariam M. Jayachandran C. Sanjeeviraja M. Tajun Meera Begam Department of Chemistry Avvaiyar Government College for Women Karaikal India Department of Physics Khadir Mohideen College Adirampattinam India ECMS Division CECRI Karaikudi India School of Physics Alagappa University Karaikudi India

Ultra-fine and uniform ITO nanopowders can be prepared by very simple Combustion method. In this paper, effects of Indium oxide with Sn doping on crystallinity, band gap values by UV studies and morphological studies by SEM and TEM analysis of nanopowders are reported. Powder mixtures of In2O3:SnO2 of 90:10 compositions are prepared and calculated grain size from X-ray diffraction measurements. The free electron absorption is determined from spectral transmission and reflection measurements. Key words: In2O3:SnO2, XRD, UV, Combustion and SEM.

关键词： In2O3:SnO2 XRD UV Combustion SEM

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Nanoparticles of In2O3/SnO2 (90/10) and (80/20) at Two Different Proportions and Its Properties

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Open Journal of Metal 2013年第2期3卷 1-7页

作者： Abbas ayeshamariam Vinodh Sundar Vidhya Thangavel Sivakumar Ramasamy Mahendran Ramasamy Perumalsamy Nallasamy Sethupathy Muthurulandi Jayachandran Department of Chemistry Chendhuran College of Engineering and Technology Pudukottai India Department of Electronics Government Arts College Kulithalai India Department of Electronics RVS College of Arts and Science Sulur Coimbatore India Department of Physics Arignar Anna Government Arts College Namakkal India Department of Physics Khadir Mohideen College Adirampattinam India Department of Physics Sir Theagaraya College Higher Secondary School Chennai India Electro Chemical Material Science Division (CSIR) Central Electro Chemical Research Institute Karaikudi India

ITO nanoparticles were obtained by combustion reaction of urea as fuel. The gel form structures were fired at 350°C in furnace for 20 min to yield powdery products and these products were calcined to five different temperatures from 100°C to 500°C for an hour to yield ITO powders. From the scanning electron microscopy (SEM) photographs and particle size analysis the average sizes of the cubic particle of powders are found to be less than 15 nm and less than 20 nm respectively. The ratio of doping concentration In/Sn is 90/10 and 80/20. The X-ray diffraction (XRD) data were evaluated by Scherer equation for the estimation of the average crystal size of the powders (less than 20 nm) for 90/10 and (less than 25 nm) for 80/20. The synthesized ITO powder characterized by XRD, UV-Vis-NIR and PL shows high specific surface area and possesses small primary crystallite size and good optical band gap.

关键词： XRD UV-Vis-NIR Photoluminescence and SEM

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