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 9 of 9 for “"Window layer"”.
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Development of ternary oxides for use in advanced front contacts in cadmium telluride solar cells by magnetron sputtering
… external load. At the front of the device, the layers should be highly transparent to minimize parasitic absorption while also supporting electron transport to the external load. In this thesis, two sputter-deposited front contact layers were investigated with the goal of improving both …
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Optimization of the front end of CDTE solar cells
The front end of CdTe solar cells consists of two layers: a transparent conducting oxide (TCO) layer and a window layer. New wider band gap materials, ZnMgO are being used to replace CdS as the window layer for the purpose of removing blue loss. For ZnMgO, three important parameters, including the …
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Heterojunction A1GaAs-GaAs solar cells for space applications
… solar cell is presented. The grid shadow and window layer effects, angle of incidence and the effects of the layer design parameters for AR-coating and window layer on the optical properties are considered in the calculations. A new structure for space solar cell which consists of double …
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Processing of CdS/CdTe solar cell and the growth model of CdTe thin film
… structure containing a p-doped CdTe layer and n-doped cadmium sulfide (CdS) layer, which acts as a window layer. Cadmium Sulfide (CdS) thin films are often deposited on glass substrates coated with TCO layers by the close-spaced sublimation (CSS) or sputter techniques in industrial …
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CdTe Solar Cells: Key Layers and Electrical Effects
… of the CdS/TCO (transparent conductive oxide) bilayer in both oxidising and reducing ambients was investigated in order to study changes in the electrical properties of the In/CdS/TCO structure. It was found that post-growth oxidising changed the current–voltage (J-V) characteristics from Ohmic …
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Thin film solar cells using all-electrodeposited ZnS, CdS and CdTe materials.
… quality ZnS, CdS, and CdTe thin layers have been successfully electrodeposited from aqueous solutions on glass/fluorine-doped tin oxide (FTO) substrates, using simplified two-electrode system instead of the conventional three-electrode system. This process was also carried out in …
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Development of high-performance front-illumination III-N avalanche photodiodes by metalorganic chemical vapor deposition
… has been developed for high-quality epitaxial layer growth with high throughput and flexibility. The incorporation of both intentional and unintentional impurities in GaN impacts the electrical conductivity and optical properties of the films grown MOCVD. Unintentional impurity reduction is …
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Imaging as characterization techniques for thin-film cadmium telluride photovoltaics
… oxide (TCO) front contact, CdS window layer, and CdTe absorber layer. EL signatures include large gradients, local reduction of luminescence, and local increases in luminescence on the interior of the device as well as bright spots located on the cell edges. The voltage bias and …
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Solution-Processed Thin Film Deposition and Characterization of Multinary Chalcogenides: Towards Highly Efficient Cu2BaSn(S,Se)4 Solar Devices
… a micron thick, single phase CBTSSe absorber layer with grains as large as 4.5 µm and band gap (E_g) of 1.68 eV was grown from the molecular solution approach. The films prepared from molecular solution and ball milling approaches (micron thick and with band gap E_g = 1.56 eV) were employed in …