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Opto-Electrical Properties Of Chemical Bath Deposited Cu4sns4 Thin Films, Ho Soon Min, Duke Oeba, Evans Makori, Mathew Munji, Walter Njoroge
Opto-Electrical Properties Of Chemical Bath Deposited Cu4sns4 Thin Films, Ho Soon Min, Duke Oeba, Evans Makori, Mathew Munji, Walter Njoroge
International Journal of Thin Film Science and Technology
Thin films could be explained as a very thin layer of a substance deposited onto various substrates. Nowadays, a variety of binary, ternary, quaternary and pent nary films have been produced by using different deposition techniques. A comprehensive study of the effects of deposition temperature on the optical and electrical properties of chemical bath deposited copper tin sulphide (Cu4SnS4) thin films is reported. The Cu4SnS4 thin films were prepared, characterized, and optimized for solar light trapping. Optical properties of the films namely, reflectance and transmittance were measured using UV-VIS NIR 3700 spectrophotometer. Transmittance and band gap of the optimized Cu4SnS4 …
Characterization Of Cobalt Selenide Films Using Fesem And Edx, Ho Soonmin
Characterization Of Cobalt Selenide Films Using Fesem And Edx, Ho Soonmin
International Journal of Thin Film Science and Technology
Preparation of thin films via chemical and physical deposition technique had been reported by many researchers. The obtained films were characterized by using various tools. Thin films were used in different applications including solar cell, light emitting diode, capacitor, photo detector, ultra violet opto-electronics, and photonic integrated circuit. In this work, the successive ionic layer adsorption and reaction (SILAR) method was used because of low temperature deposition, the simplest and the cheapest deposition method. This is the first time, composition of thin films (under various deposition cycles) was studied using energy dispersive x-ray analysis (EDX). EDX results confirmed that the …
Effect Of Thickness On Structural, Optical And Sensing Properties Of Sns Thin Films Prepared By Ultrasonic Nebulizer Method, Salah. Q. Hazaa, Hiba R. Shaker
Effect Of Thickness On Structural, Optical And Sensing Properties Of Sns Thin Films Prepared By Ultrasonic Nebulizer Method, Salah. Q. Hazaa, Hiba R. Shaker
International Journal of Thin Film Science and Technology
Thin Film of tin sulfide with different thickness (100, 250, 450, 600 ) nm have been prepared on pre-heated glass substrates up to (430oC)by Ultrasonic Nebulizer Deposition (UND). The effect of thickness on the structural, optical, and gas sensing properties of films has been investigated. The results of the XRD show that the film which deposited with thickness (100 and 250) nm exhibit only SnS phase with (111) orientation, and with thickness (450 and 600) nm crystallized in the mixed phase SnS and Sn2S3depending upon the films thickness. Atomic force measurement showed the grain size increase with thickness in the …
Electrically Switchable Nan Crystals-In-Glass Coatings That Dynamically Filter Heat And Light, Wycliffe Omwansu, Mathew Munji, Charles Migwi
Electrically Switchable Nan Crystals-In-Glass Coatings That Dynamically Filter Heat And Light, Wycliffe Omwansu, Mathew Munji, Charles Migwi
International Journal of Thin Film Science and Technology
Nickel oxide (NiO) is an electro chromic material that can be used either as a working or counter electrode in solid-state electro chromic devices such as smart windows. In combination with Cerous Titanate (CeO2-TiO2), Titanium-doped Nickel Oxide (NiO:Ti) is a promising coloring material with improved optical, electrical and electro chromic properties. Ti-doped NiO thin films were deposited on fluorine-doped tin oxide coated glass (SnO2:F) using sol-gel dip coating technique with different molar concentrations of titanium ranging from 0 to 67%. The results show a decrease in transmittance as the concentration of titanium is increased due to the formation of coloring …
Facile Development, Characterization, And Optimization Of New Nano-Demulsifiers System For Treating Water In-Crude Oil Emulsions, Magdy A.Zahran, Mohamed M. Mohammady, Hany M. Abd El-Raheem, Moneer M. Basuni
Facile Development, Characterization, And Optimization Of New Nano-Demulsifiers System For Treating Water In-Crude Oil Emulsions, Magdy A.Zahran, Mohamed M. Mohammady, Hany M. Abd El-Raheem, Moneer M. Basuni
International Journal of Thin Film Science and Technology
A novel series of new nano-demulsifiers based on a polymerizable nonionic surfactant for treating water-in-crude oil emulsions were prepared, characterized and evaluated. The results were obtained from various characterizations such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), Size Exclusion Chromatography (SEC), Zeta-sizer and Zeta-potential revealed that the polymer were prepared in amorphous form with the variety of particle sizes 30-120 nm. The efficiency of these demulsifiers was tested in water-in-oil emulsions (w/o) at different concentrations (50, 100 and 200 ppm).The results showed that, the nano-demulsifier samples are effective and achieved, the complete separation of the water during …
Models, Methods And Measurements Of Thin Films Resistivities Of Ni/Cu Bi Layers And Ni/Pd/Cu Tri Layers Films., M. K. Loudjani, C. Sella
Models, Methods And Measurements Of Thin Films Resistivities Of Ni/Cu Bi Layers And Ni/Pd/Cu Tri Layers Films., M. K. Loudjani, C. Sella
International Journal of Thin Film Science and Technology
In this study we compared resistivity measurements I and film thicknesses obtained on bi layers Ni/Cu films and tri layers Ni/Pd/Cu films with the values of resistivities and thicknesses calculated according to the model of Schumann and Gardner applied to a multi-layera system. The experimental and calculated values agree within a few %.
On Optimization Of Manufacturing Of A High-Voltage Current Driver Based On Hetero Structures To Increase Density Of Their Elements. Influence Of Miss-Match Induced Stress And Porosity Of Materials On Technological Process, E. L. Pankratov
International Journal of Thin Film Science and Technology
In this paper we introduce an approach to increase density of field-effect transistors and diodes framework a high-voltage current driver. Framework the approach we consider manufacturing the driver in hetero structure with specific configuration. Several required areas of the hetero structure should be doped by diffusion or ion implantation. After that do pant and radiation defects should by annealed framework optimized scheme. We also consider an approach to decrease value of mismatch-induced stress in the considered hetero structure. We introduce an analytical approach to analyze mass and heat transport in hetero structures during manufacturing of integrated circuits with account mismatch-induced …
Steady State Creep Characteristics Of Sn96.5ag3.5 Based Alloys, M. Y. Salem
Steady State Creep Characteristics Of Sn96.5ag3.5 Based Alloys, M. Y. Salem
International Journal of Thin Film Science and Technology
The creep curves of Sn96 Ag3.5In0.5, Sn95.5Ag3.5In1.0, and Sn95Ag3.5In1.5 ternary alloys have been studied at various constant loads from 10 to 19.5 MPa in temperature range from 303 to 393 K. The results indicated that the steady state creep parameters m and steady-state creep rate ε.st are increased with increasing both the deformation temperature and the applied stress. Significant improvement in creep of 5% and7% is realized, respectively when compared of the Sn95.5 Ag3.5 In1.0, and Sn95 Ag3.5 In1.5 with Sn96 Ag3.5 In0.5s older. This finding in dicates the capability of newly developed ternary1.5 in solder alloys to serve a …
Influence Of Deposition Parameters On Optical Properties Of Sputtered Tungsten Oxide Films, Christopher Mkirema Maghanga
Influence Of Deposition Parameters On Optical Properties Of Sputtered Tungsten Oxide Films, Christopher Mkirema Maghanga
International Journal of Thin Film Science and Technology
Thin films of tungsten oxide were deposited on glass substrates at different temperatures and O2/Ar ratios using DC Magnetron sputtering system. The samples were characterized using x-ray diffractometry and spectrophotometer structurally and optically respectively. Analysis of the results reveals dependence of structure on thickness and temperature. The O2/Ar ratio is also found to influence the optical properties appreciably for the entire wavelength range studied. Visual inspection of the films show that O2/Ar ratio influences the coloration of the film which varies from clear to dark blue for high to low O2/Ar ratios respectively.
Synthesis Of Cdo Nps For Antimicrobial Activity, Ahmed N. Abd, Mohammed F. Al –Marjani, Zahraa A. Kadham
Synthesis Of Cdo Nps For Antimicrobial Activity, Ahmed N. Abd, Mohammed F. Al –Marjani, Zahraa A. Kadham
International Journal of Thin Film Science and Technology
: In this study, (50 - 110) nm cadmium oxide (CdO) nanoparticles were synthesized by chemical method. The optical, structural and topographical properties of the synthesized nanoparticles were investigated by using UV-VIS absorption, Transmission electron microscopy TEM, atomic force microscopy AFM, and x-ray diffraction XRD. The bacterial resistance represents a problem and the outlook for the use of antibiotics in the future is still uncertain. Therefore, it must be taken measures to reduce this problem. Antibacterial activity of the Cadmium oxide nanoparticles were investigated against several pathogenic bacteria, including Klebsiella pneumoniae; Acinetobacter baumannii; Pseudomonas aeruginosa and Staphylococcus aureus by using …
The Rod Eutectic Growth Under Rapid Solidification Conditions, Xiao-Hua Xu, Ming-Wen Chen
The Rod Eutectic Growth Under Rapid Solidification Conditions, Xiao-Hua Xu, Ming-Wen Chen
International Journal of Thin Film Science and Technology
The Jackson–Hunt model of rod eutectic growth is extended from low velocities to high velocities in rapid solidification conditions. When the eutectic growth under rapid solidification conditions and the eutectic alloys contain the phases that have sluggish interface-attachment kinetics, the effect of interface kinetics on the eutectic growth is significant. The relation between the interface kinetics, growth velocity, rod spacing and interface undercooling can be derived. The results reveal that a small spacing and a large undercooling in the system require a large Peclet number p coupled with a small distribution coefficient k . The expressions 2V and T …
Effect Of Deposition Parameters On Optical And Electrical Properties Of Sno2: Al Thin Films Prepared By Spray Pyrolysis Technique For Optoelectronic Devices, P. N. Onkundi, K. M. Munji, D. B. Bem, B. Muthoka
Effect Of Deposition Parameters On Optical And Electrical Properties Of Sno2: Al Thin Films Prepared By Spray Pyrolysis Technique For Optoelectronic Devices, P. N. Onkundi, K. M. Munji, D. B. Bem, B. Muthoka
International Journal of Thin Film Science and Technology
Transparent Aluminum doped tin oxide (SnO2:Al) thin films with different Al percentage (1.96%, 3.85%, 5.66%, 7.41% and 9.09%) were fabricated using a low cost spray pyrolysis technique at optimized deposition parameters. Substrate temperature, carrier gas pressure and spray outlet to substrate distance were varied to obtain optimum conditions for deposition. Optical characterization of the deposited films was carried out to the average transmittance, optical constants (refractive index (n) and extinction coefficient (k)) and the band gap. The calculated refractive indexes of the films with various Al concentrations were in the range of 1.469 Al at. % to 1.914 Al at. …
Al, Pd Elements Deposited On The Surface Of Al-Pd-Mn Quasicrystal, Maryam Kiani, Feridoun Samavat
Al, Pd Elements Deposited On The Surface Of Al-Pd-Mn Quasicrystal, Maryam Kiani, Feridoun Samavat
International Journal of Thin Film Science and Technology
Pd element has been deposited on the clean surface of an Al-Pd-Mn quasicrystal by evaporation and using low energy ion scattering (LEIS) technique. The sample was prepared through a combination of sputtering and annealing. Then a Pd monolayer was deposited on the surface and measured the ratio of Al/Pd for clean annealed surface at the room temperature. Drawing the Al/Pd ratio versus time deposition showed a linear behavior, indicating Pd growth is Layer Growth (Frank-Van der-Merwe Growth). Similar experiment for Al has also been done. Results show that growth of Al on the sample is also conform Layer Growth (LG)
Structural, Optical, Luminescence And Morphological Properties Of Rod Shaped Cdo Biotemplate Synthesized By Via Hen Egg-Albumen Extract For Anti-Cervical Cancer Application, K. Mohanraj, D. Balasubramanian, N. Jhansi, M. Saravanabhavan, J. Chandrasekaran
Structural, Optical, Luminescence And Morphological Properties Of Rod Shaped Cdo Biotemplate Synthesized By Via Hen Egg-Albumen Extract For Anti-Cervical Cancer Application, K. Mohanraj, D. Balasubramanian, N. Jhansi, M. Saravanabhavan, J. Chandrasekaran
International Journal of Thin Film Science and Technology
In this work, the CdO biotemplate nanorods were synthesized by chemical rout assisted microwave irradiation method via Hen egg-albumin extract. The CdO biotemplate nanorods were characterized by various characterization techniques such as X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), High resolution scanning electron microscope (HRSEM), Transmission electron microscope (TEM), Energy dispersive X-rays spectroscopy (EDX), Ultra violet-Vis diffused reflectance spectroscopy (UV-Vis-DRS) and Photoluminescence spectroscopy (PL). The XRD patterns of CdO biotemplate nanorods show in cubic phase structure with average particle size 21-23 nm. Functional groups present in the compound were analyzed by FTIR technique. The HRSEM photograph shows the …
Effect Of Hydrogen On Pristine Amorphous V2o5 Thin Film, H. H. Afify, M. E. Hassan, A. M. Badr, H. A. Elsheikh
Effect Of Hydrogen On Pristine Amorphous V2o5 Thin Film, H. H. Afify, M. E. Hassan, A. M. Badr, H. A. Elsheikh
International Journal of Thin Film Science and Technology
Sequentially deposited layer by layer up to five vanadium oxide film is deposited on glass and silica substrates at 300 k by vacuum thermal evaporation technique. The deposited samples subjected to reduction process in the preparation situe by hydrogen gas at 473k for 10 minutes and 573 k for 10, 20 minutes. The XRD investigation of the samples demonstrates that the pristine sample is amorphous while those reduced are crystalline. The existed phases in virgin samples are educated by Raman spectroscopy which indicates the single V2O5 phase. The different phases in the reduced sample are identified by analyzing their XRD …
Development Of Photoactive Titanium Dioxide Doped Sodium Alginate Film For Dye Sensitized Solar Cell Application, Md. Jashim Uddin, Jahid M M Islam, Md. Ataur Rahman, Mubarak A. Khan
Development Of Photoactive Titanium Dioxide Doped Sodium Alginate Film For Dye Sensitized Solar Cell Application, Md. Jashim Uddin, Jahid M M Islam, Md. Ataur Rahman, Mubarak A. Khan
International Journal of Thin Film Science and Technology
Dye-sensitized solar cells (DSSCs) have attracted the attention of scientists all over the world because of their relatively high efficiency and low-cost production. But in order to increase the ionic conductivity and reduce the fragility of electrodes, there is a tendency to substitute some of these materials by polymers.[1] With the aim of understanding the electrical and physico-mechanical properties of polymer solar cell, we have fabricated and characterized an electro active nanocomposite using Na-alginate, Titanium dioxide (TiO2) and natural dye. The conductivities of nanocomposites with different wt,%TiO2 were studied with temperature. The highest conductivity (0.0472 S/m) was found for 8%TiO2 …
The Effect Of Inter Diffusion On The Electrical And Optical Properties Of Co/Tio2 Multilayer Thin Films, M. A. I. Nahid, Md. Faruk Hossain
The Effect Of Inter Diffusion On The Electrical And Optical Properties Of Co/Tio2 Multilayer Thin Films, M. A. I. Nahid, Md. Faruk Hossain
International Journal of Thin Film Science and Technology
The Co/TiO2 multilayer thin films were fabricated by e-beam evaporation technique on glass substrate. The electrical and optical properties of as-deposited and annealed Co/TiO2 multilayer thin films were studied. The interdiffusion of Co and TiO2 plays dramatic change in the electrical conductivity and optical transmittance of the film. The Co/TiO2 multilayer thin films annealed at 473K exhibit semiconducting behavior and at the same time it possess about 70% of transmittance value which is much larger compare to the as-deposited one.
Effect Of Cobalt Silicide Buffer Layer On Magnetic And Electrical Properties Of Co Thin Films Deposited On Si, Gaas And Glass Substrates, M. N. A. Siddiquy, Nafisa Ahmed, A. A. M. Rayhan Kabir, Md. Johurul Islam
Effect Of Cobalt Silicide Buffer Layer On Magnetic And Electrical Properties Of Co Thin Films Deposited On Si, Gaas And Glass Substrates, M. N. A. Siddiquy, Nafisa Ahmed, A. A. M. Rayhan Kabir, Md. Johurul Islam
International Journal of Thin Film Science and Technology
Cobalt silicide layers have been grown by E‒beam evaporation of Co onto Si (100) substrate and subsequent thermal treatment at 673K for 5 hours. A fresh layer of 100 nm Co is deposited on the silicide layer (sample‒1). A thin layer of 5 nm Co have been deposited on GaAs (100) substrate and annealed at 673K for 5 hours. A fresh layer of 100 nm Co is deposited on 5 nm annealed Co buffer layer (sample‒2). 100 nm Co films have been grown on glass substrate for comparison. Magnetic properties of Co thin films have been studied by Vibrating sample …
Preparation And Characterization Of A-Si:H And A-Sic:H Separate P-I-N Thin Films, Ahmed Abo Arais
Preparation And Characterization Of A-Si:H And A-Sic:H Separate P-I-N Thin Films, Ahmed Abo Arais
International Journal of Thin Film Science and Technology
a-Si:H and a-SiC:H in undoped, buffer, p-type and n-type thin films were deposited by radio frequency (RF) glow discharge decomposition method on Croning 7059 glass substrates from silane gas (SiH4) mixed with methane (CH4) for undoped, buffer and B2H6, PH3 were added for p-type and n-type thin films respectively. Gap state defects of a-Si:H and a-SiC:H thin films for both undoped and doped types have been investigated by constant photocurrent method (CPM). The minimum defect density of a-Si:H, i-film was found to be 2.5x1016cm-3 and for undoped a-SiC:H, buffer-layer was evaluated to be 8.8x1016cm-3. There was a gradual increase in …
Microstructural And Electrical Characterization Of Pt/Si Nanowires Schottky Diode Grown By Metal Assisted Chemical Etching Method, Bukke Naresh Naik, Lucky Agarwal, Shweta Tripathi
Microstructural And Electrical Characterization Of Pt/Si Nanowires Schottky Diode Grown By Metal Assisted Chemical Etching Method, Bukke Naresh Naik, Lucky Agarwal, Shweta Tripathi
International Journal of Thin Film Science and Technology
In this report, microstructural and electrical parameters have been evaluated for Pt/Si nanowires Schottky nanocontact, grown by metal-assisted chemical etching method. Schottky contact has been formed by placing a platinum conducting tip of STM at an optimized distance (in Armstrong) from the peak of SiNWs. At an optimized separation between the tip and silicon nanowires, resulting I-V characteristic shows it rectifying behaviour. Ideality factor has been evaluated as 3.7 and reverse breakdown voltage is -5V.
Models Of Electric Transport In Bilayer Ni/Cu And In A Tri-Layer Ni/Pd/Cu Thin Films, M. K. Loudjani, C. Sella
Models Of Electric Transport In Bilayer Ni/Cu And In A Tri-Layer Ni/Pd/Cu Thin Films, M. K. Loudjani, C. Sella
International Journal of Thin Film Science and Technology
In this work we propose to measure the resistivities of bilayer Ni/Cu and tri-layer Ni/Pd/Cu thin films. We will compare the experimental resistivity of bilayer Ni/Cu or a tri-layerNi/Pd/Cu to the resistivity calculated from the resistivities of the simple layers of copper, nickel and palladium. We show that in the presence of aconstantelectric fieldparallel to the interface of Ni/Cu, electronic transport in bilayer, is equivalent to that of two distinct layers (of Ni and Cu) laid out in two parallel circuits, and that of a tri-layer Ni/Pd/Cu is equivalent to that the electronic transport of three distinct layers (of Ni, …
On Analytical Prognosis Of Epitaxial Grows From Gas Phase. A Possibility To Improve Properties Of Films, E. L. Pankratov, E. A. Bulaeva.
On Analytical Prognosis Of Epitaxial Grows From Gas Phase. A Possibility To Improve Properties Of Films, E. L. Pankratov, E. A. Bulaeva.
International Journal of Thin Film Science and Technology
In this paper we introduce an analytical approach to calculate the distribution of velocity of flow of the gas mixture, the concentration distributions of the growth component and temperature fields in the zone of deposition of semiconductor layers in chemical vapor deposition using a reaction chamber with a rotating disk substrate holder. The results of analysis of the temperature and concentration fields in the reduced and atmospheric conditions (~ 0.1 atm.) pressure in the reaction chamber obtained based on the proposed theoretical models and have good agreement with experimental data. Results of analytical modelling have been compared with experimental data.
Structural, Optical And Electrical Properties Of Green Synthesis Cdo Nanoparticles And Its Ag/Cdo/P-Si Junction Diode Fabricated Via Jns Pyrolysis Techniqu, K. Mohanraj, D. Balasubramanian, N. Jhansi, R. Bakkiyaraj, J. Chandrasekaran
Structural, Optical And Electrical Properties Of Green Synthesis Cdo Nanoparticles And Its Ag/Cdo/P-Si Junction Diode Fabricated Via Jns Pyrolysis Techniqu, K. Mohanraj, D. Balasubramanian, N. Jhansi, R. Bakkiyaraj, J. Chandrasekaran
International Journal of Thin Film Science and Technology
CdO nanoparticle is synthesized using green tea extract as solvent by microwave irradiation method. Its crystalline structure is confirmed by the well define peaks of powder XRD study. The surface morphology is analyzed by SEM and TEM spectrograph. The percentage composition of cadmium present in the synthesized material is confirmed by EDS study also presence of various functional groups is analysis using FTIR spectrum. The band gap energy of composed material is calculated with the help of cut off peak of diffused reflectance spectrum of UV study. The thermal conductance of the substance is increasing with increasing the temperature. The …
Comparative Study On The Energy Conversion Efficiency Of Dye Sensitized Solar Cell Using Different Natural Dyes, Ejajul Karim, Jasim Uddin, M Saifur Rahman, M Obaidur Rahman, Mubarak A. Khan
Comparative Study On The Energy Conversion Efficiency Of Dye Sensitized Solar Cell Using Different Natural Dyes, Ejajul Karim, Jasim Uddin, M Saifur Rahman, M Obaidur Rahman, Mubarak A. Khan
International Journal of Thin Film Science and Technology
The Dye sensitized solar cells (DSSCs) were fabricated using natural dyes extracted from different natural dyes such as Turmeric, Carissa Carandas and Beet absorbed into a nano porous TiO2 substrate. The DSSCs provide a technically and economically credible alternate concept to present day p-n junction photovoltaic device. In contrast to the conventional silicon systems, where the semiconductor assumes both the task of light absorption and charge carrier transport the two functions are separate here. Light is absorbed by a sensitizer, which is anchored to the surface of a wide band gap oxide semiconductor charge separation takes place at the interface …
A Comparative Study Of Structural And Morphological Properties Of Pristine And Mn Doped Ruthenium Oxide Thin Films., P. S. Joshi, D. S. Sutrave
A Comparative Study Of Structural And Morphological Properties Of Pristine And Mn Doped Ruthenium Oxide Thin Films., P. S. Joshi, D. S. Sutrave
International Journal of Thin Film Science and Technology
Mn-doped and pristine Ruthenium Oxide composite nanostructures in thin film form were prepared on stainless steel substrates by sol-gel spin coating method. The at % of Mn was increased as 0.1, 0.2, 0.5, 1 and 2 %. The X-ray diffraction study showed crystalline behaviour for both pristine and doped films with porous morphology. The variation in lattice constants for both RuO2 and MnO2 was observed with increase in doping percentage. EDAX spectrum showed the successful doping of Mn in RuO2. The infrared spectrum of as deposited pristine RuO2 thin film depicted strong absorption bands at 880.41 cm-1 and 749.52 cm-1 …
Brush Plated Copper Gallium Sulphide Films And Their Properties, B. Kajamaideen, A. Panneerselvam, K. R. Murali
Brush Plated Copper Gallium Sulphide Films And Their Properties, B. Kajamaideen, A. Panneerselvam, K. R. Murali
International Journal of Thin Film Science and Technology
Copper gallium sulphide films were deposited for the first time by the brush plating technique at different electrolyte temperatures in the range of 30°C - 80°C and at a constant deposition current density of 5.0 mA cm-2. X-ray diffractograms of the films are single phase with chalcopyrite structure. EDAX measurements indicated that the Cu/Ga ratio decreased from 1.29 to 1.00 as the electrolyte temperature increased from 30°C - 80°C. The grain size increased with increase of electrolyte temperature. The grain size increases from 100 nm to 300 nm as the electrolyte temperature increases.
Effect Of Substrate Temperature On Tin Disulphide Thin Films, P. Gopalakrishnan, G. Anbazhagan, , J. Vijayarajasekaran, K. Vijayakumar
Effect Of Substrate Temperature On Tin Disulphide Thin Films, P. Gopalakrishnan, G. Anbazhagan, , J. Vijayarajasekaran, K. Vijayakumar
International Journal of Thin Film Science and Technology
Thin films of tin disulphide (SnS2) were deposited on glass substrates by spray pyrolysis technique using precursor solutions of SnCl2.2H2O and n-n dimethyl thiourea at different substrate temperatures varied in the range 473 – 573 K. Using the hot probe technique the type of conductivity is found to be n type. X ray diffraction revealed the polycrystalline nature with increasing crystallinity with respect to the different substrate temperature. The preferrential orientation growth of compound having (002) plane belongs to the hexagonal crystal structure. The size of the crystallites was determined using FWHM values of the Bragg peaks and found to …
Influence Of Copper Phthalocyanine (Cupc) Thin Layer On Capacitance-Voltage Characterization Of A Device Consisting Of Ito/Cupc/Pvk/Rhodamine B Dye Layers, Mohammed S. Al-Qrinawi, Taher M. El-Agez, Monzir S. Abdel-Latif, Sofyan A. Taya
Influence Of Copper Phthalocyanine (Cupc) Thin Layer On Capacitance-Voltage Characterization Of A Device Consisting Of Ito/Cupc/Pvk/Rhodamine B Dye Layers, Mohammed S. Al-Qrinawi, Taher M. El-Agez, Monzir S. Abdel-Latif, Sofyan A. Taya
International Journal of Thin Film Science and Technology
In this paper, the influence of copper-phthalocyanine (CuPc) hole-injection layer on the capacitance-voltage (CV) characteristic performance of ITO/CuPc/PVK/Rhodamine B/Pb devices was investigated. The thickness of the CuPc layer was varied form 5 nm to 50 nm. The thin films were deposited on the PVK layer by thermal vacuum deposition at 1.0 × 105 torr using MiniLab 080 system. The thicknesses were measured using using FILMETRICS F20-UVX thin-film analyzer. It was found that as the thickness of CuPc layer decreases the transition voltage (VT) and built-in voltage (Vbi) decrease except for a thickness 5 nm, which shows negative differential resistance (NDR).
A New Route For The Synthesis Of Cds Thin Films From Acidic Chemical Baths, Tizazu Abza, Francis Kofi Ampong, Fekadu Gashaw Hone, Isaac Nkrumah, Robert Kwame Nkum, Francis Boakye
A New Route For The Synthesis Of Cds Thin Films From Acidic Chemical Baths, Tizazu Abza, Francis Kofi Ampong, Fekadu Gashaw Hone, Isaac Nkrumah, Robert Kwame Nkum, Francis Boakye
International Journal of Thin Film Science and Technology
Well adherent nanocrystalline cadmium sulphide thin films have been successfully deposited from acidic chemical baths by employing tartaric acid and hydrazine as complexing agents for the first time. The pH of the bath was about 2.35 and the depositions were carried out at bath temperatures of 60 °C and 70 °C. The films were characterized by a variety of techniques. Powder X-ray diffraction patterns of the films exhibited a well crystallized hexagonal structure with a preferred orientation along the (002) plane. Scanning electron microscope investigation showed that the films are formed from spherically shaped grains. The EDAX result revealed that …
Modelling Mass And Heat Transport During Gas Phase Epitaxy In A Reactor With Rotating Substrate. On Possibility To Improve Of Properties Of Films, E.L. Pankratov, E.A.Bulaeva
Modelling Mass And Heat Transport During Gas Phase Epitaxy In A Reactor With Rotating Substrate. On Possibility To Improve Of Properties Of Films, E.L. Pankratov, E.A.Bulaeva
International Journal of Thin Film Science and Technology
In this paper we analysed convective diffusion processes in vertical and horizontal reactors for epitaxy from gas phase with disk substrate holder at atmosphere and low (~0.1 atmosphere) pressure. We formulate conditions to improve properties of grown structure. We introduce an analytical approach to solve equations of convective diffusion. We apply the obtained results for MOCVD of gallium arsenide. Epitaxy MOCVD could be used to growth of nanoscale semiconductor structures (quantum pits; arrays of quantum pits; structures with two-dimensional electronic gas). The same procedure could be also used to growth structures with higher dimensions.