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This research work investigates the ferroelectric characteristic of nanostructured ZnO/MgO bilayer based MFIM capacitor. The low leakage current (10−8 A.cm−2) of nanostructured ZnO/MgO bilayer films were observed for all annealed bilayer films. Nanostructured ZnO/MgO bilayer film annealed at 475°C was then utilized as insulator (dielectric) layer in the fabrication of MFIM capacitor due to its high...
Organic semiconductor have been discovered in different application devices such as organic light emitting diodes (OLEDs). Poly [2-methoxy-5(2′-ethylhexyloxy)-1, 4-phenylenevinylene], MEH-PPV widely used in this device because its ability to produce a good optical quality films. The MEH-PPV was prepared on glass substrate by spin coating method. The thin film was investigated with different concentration...
This Zinc Oxide (ZnO) nanorods films was synthesized with various Aluminum (Al) doping percentage deposited on ZnO seed layer using two step process sol-gel spin coating and immersion method. The Al doping was varied at different percentage from 0.6 at.% Al to 1.2 at.% Al. The morphology and electrical properties of ZnO nanorods were characterized using Field Emission Scanning Electron Microscopy...
This paper is focusing on the RF magnetron sputtering process; a physical vapor deposition technique which is widely used in the thin film production. This process requires the optimized combination of deposition parameters in order to obtain the desirable thin film. This research is proposing gravitational search algorithm (GSA) technique in solving the RF magnetron sputtering deposition parameters...
This paper presents the adaptation of Genetic Algorithm (GA), Particle Swarm Optimization (PSO) and Gravitational Search Algorithm (GSA) in solving a nano-process parameter optimization problem. The nano-process in this study is involving the RF magnetron sputtering process. The performances of the algorithms are compared in this optimization problem. The performance of GA, PSO and GSA is evaluated...
Computational intelligence has been widely adapted in various fields and has been demonstrated excellent performances in solving optimization problems. This study is proposing the implementation of gravitational search algorithm (GSA) in the parameter optimization of RF magnetron sputtering process. RF magnetron sputtering is a nanotechnology process which involves the deposition of nano-scaled atoms...
In the production of nanostructured TiO2, the annealing temperature for the film is differed to clarify that by the use of different temperature in annealing the film, the best temperature to get a good mobility for the current flow can be found. There are 7 samples with different drying temperature and different annealing temperature. The ones with different drying are not annealed and the other...
Tin-doped Zinc Oxide (Sn-doped ZnO) thin film has been deposited onto glass substrates using sol-gel immersion method. These thin films are grown at different doping concentrations. The electrical and structural characterizations of the undoped and doped films were carried out using current-voltage (IV) measurement and field emission scanning electron microscopy (FESEM). From this study, it is known...
Amorphous carbon thin films were deposited on glass substrates by using low negative bias voltage in the range of −10V to −50V at 500°C in 1 hour deposition. The effect of low negative bias voltage on electrical properties of nitrogen doped amorphous carbon thin films were determined. The amorphous carbon thin films were characterized by current-voltage measurement, and atomic force microscopy. Various...
Amorphous carbon thin films were deposited on glass substrates by using low positive bias voltage in the range of +20V to +50V at 500°C in 1 hour deposition. The effect of low positive bias on electrical properties of nitrogen doped amorphous carbon thin films were determined. The nitrogen doped amorphous carbon thin films were characterized by current-voltage measurement, surface profiler, UV-VIS/NIR...
Nb-doped TiO2 thin films have been successfully prepared using liquid phase solution method. For the first time, Nb-doped sol-gel has been combined with commercially available TiO2 nanopowder (Degussa P25) for preparing Nb-doped TiO2 photoanode for DSSC application. EDX analysis confirms the presence of Nb in the thin films. Nb-doped TiO2 sample showed improvement in term of electrical resistivity...
The electrical, dielectric and structural properties of multilayer ZnO/MgO films prepared by simple chemical deposition technique were investigated using I-V measurement, impedance spectroscopy analyzer and field emission scanning electron microscope (FESEM). From the observation, it shows that the annealing temperature influence the electrical, dielectric and structural properties of ZnO/MgO multilayer...
Amorphous carbon (a-C) thin films was deposited using Aerosol-Assisted CVD (AACVD) method and the properties was discussed. Flow rate of the experimental setup was varied (15, 30, 45 and 60 bubbles per minute) in order to optimize the a-C thin film characteristics and the electrical, optical and structural properties were investigated. The electrical properties was characterized by current-voltage...
We report the structural and electrical studies of ZnO thin films under different RF power (50 to 300 Watt in steps of 50 watt). The ZnO thin films were deposited on glass substrate by radio frequency (RF) magnetron sputtering method in an argon atmosphere. The surface morphology, crystallinity and conductivity were analyzed by FESEM, AFM, XRD and current voltage (I-V) probe measurement system. The...
The structure transformation of ZnO thin films properties influenced by substrate temperature deposited by RF Magnetron Sputtering is presented. This project has been focused on electrical, optical and structural properties of ZnO thin films. The effect of variation substrate temperature at 200°C∼500°C on the ZnO thin films have been investigated. The thin films were examined using two point probe...
Mister atomizer technique or so called spray pyrolysis has been applied to deposit CuI thin films on amorphous substrate. The effects of substrate temperature (RT ‒200°C) on their electrical and optical properties were studied. The physical characteristics of sprayed CuI were determined by field emission scanning electron microscopy (FESEM), current voltage (I-V) measurement and UV-VIS-NIR spectrophotometer...
In this paper, we report the electrical conductivity of nanocomposited MEH-PPV:I-MWNT thin film by varying the composition of Iodine doped multi-walled nanotubes (I-MWNT) in MEH-PPV matrix from 0, 2 and 4 wt%. Electrical conductivity showed increasing in value as the composition of I-MWNT increased from 0, 2 to 4 wt%. The value of conductivity is very outstanding when the polymer was blended with...
Layer-by-layer ZnO nanoparticles thin films were deposited using sol-gel spin coating technique. Zinc acetate dihydrate, 2-methoxyethanol and monoethanolamine were used in the ZnO solution. Different numbers of film layers were employed to study their effects to the physical, electrical and optical properties of the thin films. XRD patterns showed that the films were single crystalline with highly...
This technical paper investigates the electrical properties of the Zinc doped SnO2 (Zn-doped SnO2) nanostructures that have been prepared by the immersion method by different period of immersion process. The experiment was conducted in 3 different time constraint. The thin films were characterized by using current-voltage (I-V) measurement (Keithley 2400). The results analyzed were for time duration...
In this research, the effect of precursor concentration of CuI thin film deposited by spraying technique was studied. The CuI concentration varies from 0.05M to 0.5M. The CuI solution was prepared by mixing the CuI powder with 50 ml of acetonitrile as a solvent. The deposition takes 15 min for 50ml at a constant temperature of 50°C. The result shows the CuI thin film properties strongly depends on...
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