Rajendra B V

Rajendra B V
Manipal Academy of Higher Education | MAHE · Department of Physics

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37
Publications
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213
Citations

Publications

Publications (37)
Article
The current investigation focuses on the influence of substrate temperature on Zinc Oxide (ZnO) thin films synthesized on glass substrates using 0.1 M precursor solution by low-cost spray pyrolysis technique. The x-ray diffraction peaks matched the hexagonal wurtzite structure of ZnO with the highest intensity along the (1 0 1) plane. Estimated the...
Article
Using the chemical spray pyrolysis method, nanostructured ZnO films have been synthesized on p-type silicon substrates. The fabricated films are grown at different deposition temperatures (300–500 °C) and are characterized using a combination of microstructural, electrical, and nanoscopic piezoelectric techniques. The X-ray diffraction results, in...
Article
We report on the synthesis and characterization of Nd³⁺ doped Zinc oxide (ZnO) thin films fabricated using the chemical spray pyrolysis technique at 723 K. A comprehensive investigation using a combination of experimental techniques is undertaken to unveil the structural, morphological, compositional, electrical, linear, and nonlinear optical chara...
Article
Investigation on the effect of annealing on structure, morphology, photoluminescence, electrical, linear and nonlinear optical properties of spray pyrolyzed Sn0.97La0.03O2 films is presented. The annealing enhanced the relative intensities of the major diffraction peaks and the crystallite size due to the reduction in strain and dislocation density...
Article
Transparent Zn0.97La0.03O nanostructures were prepared at different temperatures (300 °C–500 °C) on borosilicate glass substrates using the chemical spray method. The present work focused on the dependence of the substrate temperature (Ts) on the different characteristics of the prepared films. In all the deposits, a polycrystalline structure of La...
Article
In the present work, transparent ZnO and Zn0.95La0.05O films were prepared at a deposition temperature of 400 ⁰C on the glass substrate through the chemical spray pyrolysis technique. The precursor solutions were prepared by using salts such as Zinc acetate dihydrate, Lanthanum chloride heptahydrate, and double distilled water as the solvent. The o...
Conference Paper
Transparent conducting ZnO and Zn0.97Nd0.03O films were deposited on chemically cleaned glass substrates at 723 K through the spray pyrolysis method. All deposits were shown hexagonal wurtzite structure with polycrystalline nature having prominent (1 0 1) plane. The films exhibited fibrous surface morphology. Above 80 % transparency in the visible...
Article
Zn1-xLaxO nanofilms were prepared on the glass substrate at 723K using the chemical spray pyrolysis technique. All deposits are hexagonal wurtzite structures with intense plane along the (101) plane. The films doped with 3% La³⁺ ion showed the least crystalline size with maximum dislocation density. The surface morphology of the deposits changed fr...
Article
Transparent nano-crystalline thin films of Sn1−xLaxO2 (x = 0–0.1) were deposited on glass substrates using the cost-effective chemical spray pyrolysis method. The influence of La³⁺ concentration on the structural, morphological, linear and third-order nonlinear optical properties of the films were analysed. All the films possessed tetragonal crysta...
Article
Highly transparent and conducting polycrystalline n-type SnO2 thin films with prominent peak corresponding to (1 1 0) plane was deposited using the simple spray pyrolysis technique. A systematic investigation was carried out in order to understand the influence of deposition temperature on the structure, surface morphology, composition, linear and...
Article
The spray pyrolyzed Zn1−xCoxO (x=0.01 to 0.10 at %) (ZCO) films showed polycrystalline nature with a prominent peak of (0 0 2) plane. Fibrous structure changes to the rice-grain type morphology with an increase in doping. XPS analysis confirmed the existence of Co ions in the +2 state. The reduction of transmittance and energy bandgap (Eg) of depos...
Article
Nano crystalline Cd1-xZnxS (x=0.00-1.00 at. %) films were deposited on glass substrates through conventional chemical spray pyrolysis method at different temperatures. The films with x< 0.70 have exhibited hexagonal phase beyond which cubic phase was noticed. The shifting of XRD peaks with higher Zn content, confirmed the formation of Cd1-xZnxS sol...
Article
Transparent nano crystalline Zn1-xCdxS films were grown on glass substrates at 0.0125 M precursor concentration using chemical spray pyrolysis technique. The suitable optimized temperatures were adjusted from 673 K to 573 K for different compositions. The films with x< 0.40 have exhibited cubic phase with the crystalline plane of (1 1 1) orientatio...
Article
The polycrystalline Cadmium Oxide (CdO) thin films were grown on glass slides at 693K by spray pyrolysis technique. A comprehensive study was carried out to understand the influence of precursor concentrations on structure, surface morphology, optical and electrical properties of the deposited films. X-ray diffraction study shown the cubic phase of...
Conference Paper
Ternary Cd0.90Zn0.10S thin films of 0.0125M, 0.025M and 0.05M precursor concentrations have been successfully deposited on preheated (573 K) glass substrates using spray pyrolysis method. The structure, morphology and optical properties of depositshave been characterized by X-ray diffraction,scanning electron microscopy and UV–Visible spectrophotom...
Article
Full-text available
CdxZn1-xO (x = 0.00, 0.10 and 0.20) thin films were deposited on glass substrate by the chemical spray pyrolysis technique. The precursor solutions were obtained by varying the concentration of zinc acetate and cadmium acetate in double distilled water. Substrate temperature was fixed at 723K. The structure, surface morphology and optical propertie...
Article
Full-text available
ZnO films were deposited on glass substrates using precursor solution of 0.05M and 0.025M at 623K through spray pyrolysis technique. The comprehensive work has been carried out to analyze the change in the structure and optical properties of deposited films with respect to various precursor solutions concentrations. The XRD pattern shows that, depo...
Article
The present work focuses on the effect of substrate temperature and molar concentration on properties of polycrystalline Zn0.80Cd0.20O thin films deposited on glass substrates by chemical spray pyrolysis. X-ray diffraction (XRD) results have revealed the presence of mixed faces of cubic-hexagonal structure in the polycrystalline film and substrate...
Article
Full-text available
Cd1−xZnxO nanocrystallite films with doping concentrations varied from x = 0.00–0.90 were synthesized through a simple chemical route of the spray pyrolysis process using 0.05M precursor solution. The suitable optimized temperatures for different compositions films were obtained by adjusting deposition temperatures from 693 to 723 K. It was found t...
Conference Paper
Ternary Zn1-xCdxO(x=0.10, 0.40, 0.70 at.%) thin films of 0.025M precursor concentration have been successfully deposited on preheated (723K) glass substrates using spray pyrolysis route. The structure, morphology and optical properties of deposited films have been characterized by X-ray diffraction, Scanning Electron Microscopy (SEM) and UV–Visible...
Article
Full-text available
Zn0.99Mn0.01O thin films were deposited on borosilicate glass at different temperatures and precursor concentration using cost-effective chemical spray pyrolysis. X-ray diffraction patterns revealed that all the deposits had a hexagonal wurtzite structure with (0 0 2) preferred orientation. The variation of deposition temperature and precursor conc...
Article
Full-text available
This report includes comprehensive studies on the influence of cadmium doping level of structure, surface morphology, optical and electrical properties of synthesized Zn1−xCdxO thin films by simple and inexpensive spray pyrolysis method under optimized deposition conditions using zinc acetate dihydrate and cadmium acetate dihydrate as precursors. A...
Article
Full-text available
Fiber structured Zn0.90Cd0.1O films were obtained on glass substrate using zinc acetate and cadmium acetate solution through chemical spray pyrolysis method. All the deposited films are polycrystalline with hexagonal wurtzite structure. The average crystalline size of the deposited films were estimated through intensity of diffraction peak correspo...
Article
Zinc oxide thin films were deposited on glass substrate at a substrate temperature of 673K by spray pyrolysis method using different concentration of 0.0125M, 0.025M and 0.05M of Zinc acetate solutions. The effect of molar concentrations on structure, surface morphology and magnetic properties of ZnO films were investigated using x-ray diffraction,...
Article
ZnO thin films were deposited on cleaned glass substrates through spray pyrolysis technique using precursor solution of zinc acetate. A comprehensive study was carried out to understand the influence of preparation parameters such as substrate temperature and precursor solution concentration on structure and optical properties of ZnO thin films. X-...
Article
Zinc oxide (ZnO) thin films were deposited on the glass substrates using Zinc acetate dehydrate solution through spray pyrolysis method. The films were obtained by spraying 0.05M concentrated solution at a rate of 0.5ml for 10 min and were deposited at different substrate temperatures ranging from 473K to 673K. A comprehensive study was carried out...
Article
Polycrystalline thin film II–VI compound semiconductors of cadmium sulfide (CdS) and cadmium telluride (CdTe) are the leading materials for the development of cost effective and reliable photovoltaic systems. The two important properties of these materials are its nearness to the ideal band gap for photovoltaic conversion efficiency and they have h...
Article
Cadmium sulfide (CdS) thin films were deposited on glass substrate at room temperature by successive ionic layer adsorption and reaction method (SILAR). The deposition parameters such as rinsing time, rinsing cycle and concentration of precursor solution were varied during the preparation of the samples. The structural characterization and optical...
Article
We have grown organic solar cells through bilayer structure using copper phthalocyanine (CuPc) as the donor material and fullerene (C70) as the acceptor. In this article, we demonstrate power conversion efficiency of 1.47% for the bilayered solar cells composed of CuPc and C70. Successful tuning of the thickness of the individual layers was carried...
Article
Full-text available
Photoconductivity has been studied in cadmium selenide thin films prepared by thermal evaporation in vacuum. Attempts have been made to correlate the photoresponse with the deposition conditions. It has been observed that as-grown films, irrespective of the cadmium content, are not photosensitive and that baking in air, especially above 723 K, lead...
Article
Semiconducting thin films of cadmium selenide have been grown by conventional thermal evaporation technique. The effect of various growth parameters like rate of deposition and deposition temperature has been studied in detail. Films deposited at room temperature are cadmium rich with segregated selenium globules. A deposition temperature of 453 K...

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