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Showing 1 to 17 of 17 for “"Cadmium Sulfide (CdS)"”.
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Experimental validation of the predicted emergent magnetism in diamagnetic cadmium sulfide (Cds) doped with boron
… interaction in dilute magnetic semiconductors. CdS is a wide band-gap semiconductor that displays large and persistent photoconductivity and is predicted to become magnetic when doped with certain dopants such as Boron[1]. In this work, we experimentally test the prediction of magnetic CdS:B, …
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Processing of CdS/CdTe solar cell and the growth model of CdTe thin film
Cadmium telluride is the only thin film photovoltaic (PV) technology to surpass crystalline silicon PV in the cost. The most common CdTe solar cells consist of a simple p-n heterojunction structure containing a p-doped CdTe layer and n-doped cadmium sulfide (CdS) layer, which acts as a window …
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Optimization and Purification of Cadmium Sulfide Quantum Dots Biosynthesized by the Fungus Fusarium Oxysporum
Cadmium sulfide (CdS) quantum dots have been synthesized extracellularly by the fungus Fusarium oxysporum when treated with CdSO4 in aqueous conditions. The quantum dots produce an emission range primarily between 450 and 550 nm. Optimization into the production system reveals that quantum dots are …
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Transition Metal Chalcogenide (Cadmium Sulfide) Nanoparticles: (Bio)synthesis, Characterization and Photoelectrochemical Performance
<p>Cadmium sulfide (CdS) is one of the most commonly used and studied II/VI semiconductor materials due to its electron energy band structure with desirable band edges and direct band gap. CdS nanoparticles (NPs) are widely applied in different areas such as biosensing, antibacterial agents, …
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Hybrid optoelectronics with colloidal nanocrystals
… of the exciton dynamics in colloidal spherical cadmium sulfide CdS nanocrystals (NC) in the vicinity of a single indium gallium nitride InGaN quantum well (QW) in dependence of temperature. QWs of the alloy material InGaN exhibit a dependence of the exciton dimensionality on the thermal energy …
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Towards rational design of peptides for selective interaction with inorganic materials
… by screening a human scFv YSD library against cadmium sulfide (CdS), a II-VI semiconductor. The presence of multiple histidine residues was found to be necessary for mediating cell binding to CdS. As a follow-up, a systematic screen with yeast displayed rationally designed peptides was …
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Research and development of CdS/CdTe solar cells incorporating ZnTe layers.
… from periodic table. The semiconductors are cadmium sulfide (CdS), cadmium telluride (CdTe) and zinc telluride (ZnTe).All of these layers were obtained by growing them using electrodeposition in aqueous solutions. In this project, electrodeposition using 2-electrode system was employed to …
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Fabrication and optimization of light emitting devices with core-shell quantum dots
… dots (QDs) -- semiconducting nanocrystals of CdSe, PbS, or another similar compound -- with a wide band-gap "shell" has recently been shown to significantly boost QD-LED performance and yield the most efficient accent QD-LEDs to date. This thesis studies fabrication techniques to make bright, …
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Nanoparticle-based Organic Energy Storage with Harvesting Systems
… namely, zinc-oxide (ZnO), erbium (Er), cadmium sulfide (CdS), palladium (Pd) and silver-platinum (AgPt) were used as charge storage elements in fabrication of metal-insulator-semiconductor (MIS) structure. The organic semiconductor and synthesized nanoparticles are tested to evaluate and …
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Development and testing of thin photocatalyst films
… made from titanium dioxide (TiO<sub>2</sub>) and cadmium sulfide (CdS) nanoparticles, as well as their characterisation and testing for photocatalytic activity by using a variety of known photocatalytic reactions and techniques.<br/><br/>A TiO<sub>2</sub>-SEN film is detailed, based on the …
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DFT calculations for cadmium telluride (CdTe)
Cadmium Telluride (CdTe) thin film photovoltaics (PV) has demonstrated low Levelized Cost of Energy (LCOE). CdTe technology also counted for half the thin film market in 2013 [3]. CdTe PV has the smallest carbon footprint a nd the energy payback time (less than one year) is the shortest of any …
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Synthesis of Cadmium, Lead and Iron Sulfide Thin Films and Nanoparticles
… and pressing. In this research project, Cadmium Sulfide, Lead Sulfide and Iron Sulfide nanoparticles and thin films were selected and synthesized because of their unique properties and applications. The use of single source precursors for the fabrication of these nanomaterials has been …
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Fabrication and analysis of CIGS nanoparticle-based thin film solar cells
… implemented in solar cell devices that included Cadmium Sulfide (CdS) and Zinc Oxide (ZnO) layers. The CdS film served as the n-type layer to form a pn junction with the p-type CIGS layer. In a typical device, a 300 nm CdS layer was deposited through chemical bath deposition on a 1 $mu$m thick …
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Development of label-free colorimetric plasmonic sensor for biomedical applications
… is based on a semiconductor material such as cadmium sulfide (CdS) layer, which has a high refractive index and very low extinction coefficient, sandwiched between two gold (Au) layers. This method allows intensity based bio-sensing with the help of a simple bandpass filter to allow certain …
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Low temperature photoluminescence studies on sputter deposited cadmium sulphide/cadmium telluride heterojunctions and solar cells
Device quality CdS/CdTe heterostructures and completed solar cells (~12% efficient) have been studied using low-temperature photoluminescence (PL). The PL was studied as a function of temperature (82-295 K) and laser excitation power (0.02-2 mW). The CdS/CdTe junctions were grown on transparent …
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Surface trap passivation and characterization of lead sulfide quantum dots for optical and electrical applications
… focuses on the trap states in IR emitting lead sulfide (PbS) QD thin films, which have great potential for application in photovoltaics, light emitting diodes (LEDs), photodetectors, and bio-imaging. Previously, QD thin films are treated with different ligands to passivate trap states and …
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Investigation on nanostructured solar cells
… TiO2 nanoparticle size rather than the phase. CdS and CdSe layers were deposited on the TiO2 network prepared from thus-synthesized TiO2 nanoparticles and their effects on the performance of solar cells were investigated. A CdS underlayer was beneficial for the solar cells in all respects …