Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Chemical Bath Deposition"”.
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Chemical bath deposition and electrodeposition of epitaxial semiconductor materials for application in photovoltaic devices
"This dissertation investigates the chemical bath deposition of zinc oxide and electrodeposition of cuprous iodide on polycrystalline and single crystal substrates. Paper I describes the chemical bath deposition and characterization of titled epitaxial zinc oxide nanospears on Si(001) single …
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Light Emission from Zinc Oxide Nanoforest Plasma
<p>Zinc oxide (ZnO) nanorods were grown through chemical bath deposition tech- nique on different substrates, such as highly p-doped silicon microstructures, low p-doped silicon and silicon dioxide. High voltage (up to 80 V) induced plasma formation is reported with high intensity arcs of …
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Processing of CdS/CdTe solar cell and the growth model of CdTe thin film
… is seldom reported that CdS is deposited by the chemical bath deposition (CBD) batch process. The bottleneck of CBD for commercial application is its low production rate and waste water treatment. This dissertation reports how to produce different thickness large area (100cm2) CdS thin film by …
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Effect of synthesis conditions on large and persistent photoconductivity in chemical bath deposited cadmium sulfide thin films
… PPC are unexplored. Here, we study the effect of chemical bath deposition parameters on PPC in CdS thin films, including bath temperature, concentration of reactants, deposition time, stirring speed and cation source. By tuning the chemical conditions during deposition, we achieved near …
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The growth and characterisation of ordered arrays of zinc oxide nanostructures and optical studies of defects in zinc oxide
… arrays were deposited on silicon by seeding and chemical bath deposition (CBD), carbothermal vapour phase transport (CTR-VPT) and a hybrid CBD / CTR-VPT method. The best optical quality nanorods were obtained by the hybrid CBD / CTR-VPT method. This hybrid method was extended further and a method …
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Preparation And Characterization Of Cigss Solar Cells And Pv Module Data Analysis
… has been written to carry out automated sputter deposition of Mo back contact, CuGa, In metallic precursors on a soda lime glass substrate using a stepper motor control for better uniformity. Further, selenization/ sulfurization of these precursors was carried out using rapid thermal processing …
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Optoelectronic applications of solution-processable sulfide semiconductors
… caused by the oxidation process. Further, a new chemical bath deposition method for antimony sulfide is developed. Carried out at room temperature, this technique eliminates the necessity of cooling equipment during the deposition process. The antimony sulfide from this method decreases the …
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Fabrication and characterisation of ZnO nanostructures: from nanoscale building blocks to hybrid nanomaterials - towards emerging technologies in sensing applications
… synthetic techniques ranging from vapor phase deposition (Metal-Organic Chemical Vapor Deposition) to solution growth (Chemical Bath Depo-sition). Moreover, hybrid synthetic approaches are used to obtain complex hier-archical ZnO structures having dual or multiple morphologies. The non-covalent …
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Preparation Of Efficient Cuin1-xgaxse2-ysy/cds Thin-film Solar Cells By Optimizing The Molybdenum Back Contact And Using Diethylselenide as Selenium Precursor
… sputtering for studying the adhesion and chemical reactivity with selenium and sulfur containing gas at maximum film growth temperature. Mo being a refractory material develops stresses, nature of which depends on the deposition power and argon pressure. It was found that the deposition …
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SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE BASED NANOSTRUCTURES AND COMPOSITES FOR ENERGY RELATED APPLICATIONS
… applications using a simple and cost-effective chemical bath deposition (CBD) technique. Highly crystalline zinc oxide (ZnO) nanowires (NWs) were synthesized through CBD method using a simple seeding technique. This seeding process includes dispersion of commercially available ZnO nanoparticles …
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Research and development of CdTe based thin film PV solar cells
… high efficiency solar cell using electrodeposition (ED) technique. The material layers include CdS and ZnTe as the window materials, while the absorber material is CdTe. Fabricating a suitable devices for solar energy conversion (i.e. glass/conducting glass/window material/absorber …
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Fabrication and analysis of CIGS nanoparticle-based thin film solar cells
… cell devices. This synthesis method utilizes a chemical colloidal process resulting in the formation of nanoparticles with tunable band gap and size. Based on theoretical and experimental studies, 100 nm nanoparticles with an associated band gap of 1.33 eV were selected to achieve the desired …
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Optical characterization of copper indium gallium diselenide thin films
… were covered with a ~50 nm thick CdS film by chemical bath deposition (CBD). It is concluded that spectral changes that others have observed in the emission of CdS-treated films is a result of the CBD process itself and not the resulting film or the formation of the heterojunction. The effect …
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Aerosol Processes Enabling Solar Energy Applications
… metal oxide-based solar cell devices. Aerosol-chemical vapor deposition: ACVD), a simple, one-step process operating at atmospheric pressure, was developed to deposit nanostructured metal oxide films with controlled morphologies. The as-synthesized nanostructured thin films were used as …
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Electroluminescence and inorganic phosphor science
… 70 and 400 nin have been prepared in an aqueous chemical bath, on optically smooth, silica, or silica based, substrates. The chemical bath contained zinc and cadmium chlorides, thioacetamide, and urea, and the most successful combination of concentrations was found to be 2.6 mM, 56.36 mM and …
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Novel Ni-based Nanostructures: Synthesis and Application in Sensing and Energy Storage
… size, shape and structure-dependent physical and chemical properties emerge, opening new opportunities in science and technology. Among the various nanostructured materials, metal oxide nanostructures and, specifically, nickel hydroxide [Ni(OH)2] and nickel oxide (NiO) nanostructures have recently …
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Sintesi di nanostelle di Ossido di Zinco per applicazioni in campo energetico e biosensoristico
Le nanostrutture vengono esaltate come materiali innovativi progettati su scala nanometrica. L'interesse crescente nei confronti dei nanomateriali deriva dal riconoscimento che le loro dimensioni su scala nanometrica possono modificare significativamente le proprietà dei materiali. L'adattabilità …