TiO2 reported in all litterateurs with three phases anatase, rutile and brookite which variance activities most of chemical properties. The properties represent one the best strategy to enhance activities. Thus this work were prepared different crystal mixture from TiOSO4/H2O2 by change values pH for solution (3, 8, 11 14). synthesized characterized Raman spectroscopy X-ray diffraction that shown product. results analysis show Anatase prefer acid or forming amorphous towards basic solution.

Palladium – doped ZnO thin film was deposited by chemical spray pyrolysis on glass substrate to be a fast hydrogen gas sensor. The prepared films were dipping in palladium chloride PdCl2 dissolved ethanol C2H5OH. optical properties and the surface morphology of studied. sensitivity response time behaviors based sensor investigated. dependence temperature test concentration tested optimum operation determined at around 280 oC. 2-3 s highly improved compared slow few minutes traditional sensors.

The generation of white light from CdS nanoparticles (NPs) illuminated by UV-LED is presented. synthesis the reaction CdCl2 and sulfur dissolved in oleylamine 1:2 mole ratio was used preparation nanocrystalline. PMMA film doped with prepared. found illumination CdS/polymer composite power 5 mW at λ = 385 nm. mechanism explaining depending on mixing colors nanoparticles. surface levels formed optical energy band due to nanostructure estimated Poisson equation designed for this state....

Fast response time UV photoconductive detector was fabricated based on ZnO film prepared by thermal chemical spray pyrolysis technique. The nanofilms are grown the porous silicon (PS) nanosurface which has drastically reduced of from few seconds to hundreds microseconds. surface functionalization deposited layer polyamide nylon highly improved photoresponsivity 0.8 A/W. normalized de-tectivity (D*) at wavelength 385 nm is found be about 2.12 × 1011 cm Hz1/2 W–1. oriented in c-axis and it a...

The three-photon absorption (3PA) in nanostructure wide-band gap ZnO semiconductor material is observed under high intensity femtosecond Titanium-Sapphire laser of 800 nm wavelength excitation. film was prepared by chemical spray pyrolysis technique with substrate temperature 400℃. optical properties concerning the absorp-tion, transmission, reflection, Raman and photoluminescence spectra are studied for film. structure tested X-Ray diffraction it found to be a polycrystalline recognized...

The synthesis techniques of highly luminescent CdSe/ZnS core-shell composite nanocrystals are reported. color-conversion, incorporating the photoluminescence emission in blue λ=350 nm and green λ=520 on near UV-InGaN/GaN LED λ=365 nm, was studied. generated white light resulting from color-mixing emitted wavelengths that UV analyzed depending upon chromaticity coordinates. X-ray diffraction pattern used to study structure nanocrystal size formation. absorption spectra were investigated....

IJAR - Indian Journal of Applied Research (IJAR) is a double reviewed monthly print journal that accepts research works from scholars, academicians, professors, doctorates, lecturers, and corporate in their respective expertise studies.

The three-photon absorption (3PA) in nanostructure wide-band gap ZnO semiconductor material is observed under high intensity femtosecond Titanium-Sapphire laser of 800 nm wavelength excitation. nanofilms were prepared by chemical spray pyrolysis technique with substrate temperature 370 oC. optical properties concerning the absorption, transmission, and photoluminescence spectra are studied for nanofilms. structure nanofilm was tested X-Ray diffraction it found to be a polycrystalline...

Strong nonlinear absorption in CdS nanoparticles of dimensions the range 4 - 50 nm when irradiated with a femtosecond pulsed laser at 800 is observed. The sizes were controlled by changing reaction time aqueous solutions thiourea and cadmium chloride. structure prepared tested their optical properties investigated coeffi-cients measured using fully computerized z-scan unit. It found that formation nanos-tructuresfor are responsible for observation strong tow photon absorption.

Fast response time IR photoconductive detector was fabricated based on Multi-Walled Carbon nanotubes (MWCNTs) film deposited by dip coating technique. The MWCNTs is the porous silicon (PS) nanosurface which has drastically reduced of to few hundreds microseconds. surface functionalization layer polyamide nylon found be highly improving photoresponsivity detector.

Carbon nanotubes (MWCNTs,F-MWCNTs,SWCNTs) with different structure were fabricated into near-infrared photodetectors. Indium Tin Oxide (ITO) was used as a substrate to deposit CNTs by the drop casting method. The CNTs carrier concentrations, conductivity and mobility measured. Different types photodetectors exhibit good photoconductive performance at wavelength (980-1200nm) especially SWCNTs, responsivity found to be (0.295 A W-1 ), specific detectivity (D*) 1×109 cm.Hz1/2 .W-1 response...

Zinc Oxide (ZnO) /porous-silicon photovoltaic device was fabricated to detect fast ultraviolet (UV) radiation pulses. The UV detector, based on the deposition of ZnO wide-band gap semiconductor material nanospikes silicon layer form a heterojunction, has response time current voltage characteristic, capacitance variation with applied and ideality factor heterojunction were studied. operation detector under reverse bias of-2 volts successfully detected an ultra-fast nitrogen laser pulses at 385 (nm).

In this work, the preparation of cadmium telluride (CdTe) nanoparticles by aqueous solution method is presented. The process was performed in presence an acidic agent (L-cys) at certain pH value. x-ray diffraction (XRD) patterns and scanning electron microscopy (SEM) prepared samples showed that poly crystalline structure with lowest particle size can be produced controlling period heating after step. Accordingly, parameter used carefully to control surface roughness nanoscale CdTe serve...

The theoretical analysis and the experimental results show that dependence of laser output energy on electron concentration mainly depends mechanism reduction in main discharge. logarithmic increasing with density (which was mentioned literature as a general formula), is found to be valid only when electrons due attachment, but it needs modified if recombination.