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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 20 of 619 for “"Cadmium"”.
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Luminescence of Cadmium Selenide and Cadmium-Sulfide and the Influence of Defects
Made available in DSpace on 2014-12-10T19:06:58Z (GMT). No. of bitstreams: 1 7219789.pdf: 5537007 bytes, checksum: fd1876ee39bf9d8d6b4ed0f50eb72ce8 (MD5) Previous issue date: 1972
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Experimental Interrogation Of One-Dimensional Excitons In Cadmium Selenide And Cadmium Telluride Quantum Nanostructures
<p>The lengths of one-dimensional quantum wires: QWs) make them excellent candidates for implementation into devices that require charge transport over micrometer-scale distances. Additionally, their tunable band-gap energies, polarized emission, and large absorption cross sections make them quite …
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Cadmium-Induced Growth Depression and Cadmium Accumulation in Chicks as Influenced by Dietary Modifications
Made available in DSpace on 2014-12-13T19:42:54Z (GMT). No. of bitstreams: 1 8026582.pdf: 6082072 bytes, checksum: efc818c302eff5de111b9134b7a925c5 (MD5) Previous issue date: 1980
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Cadmium accumulation in agricultural soils
Cadmium (Cd) has accumulated in New Zealand (NZ) soils as a result of phosphate fertiliser application. Cadmium is a biotoxic heavy metal and can be adsorbed by soil and enter the human food chain. Three objectives were investigated in this thesis: 1. Determine if the distribution of Cd varies …
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Molecular mechanisms of cadmium toxic
Cadmium is a heavy metal which has been associated with a number of pathological diseases. However, despite the known toxicity of this metal, there is inconclusive evidence about its mechanism(s) of action in the cells. The present study was therefore undertaken with the aim of defining the role of …
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Cyclotron Resonance in Cadmium-Telluride
Made available in DSpace on 2015-05-12T21:41:30Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6500848.PDF: 3124153 bytes, checksum: 4dee773f1804e4c323339942c1165276 (MD5) Previous issue date: 1964
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Cyclotron resonance in cadmium telluride
"Cyclotron resonance experiments have been performed on single crystals of high purity, n-type CdTe at 4.2°K. A reflection type microwave spectrometer was employed, operating at a frequency of 70 Gc. The mass and the mobility of the carriers, as determined from the resonance spectra, identify the …
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Low temperature photoluminescence studies on sputter deposited cadmium sulphide/cadmium telluride heterojunctions and solar cells
… is thought to be either due to Cu occupying cadmium vacancies (VCd) or forming acceptor complexes with them. This points to a potential role of Cu in plugging sub-band gap recombination routes and hence increasing charge separation ability of the device. An energy band diagram is presented …
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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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Photoluminescence study of cadmium zinc telluride
In this thesis, I present a detailed study of Cd1-xZn xTe crystals with 0 ≤ x ≤ 0.14 using photoluminescence (PL) spectroscopy in the temperature range from 5 K to 300 K with the purpose of: (1) identifying various radiative transitions that are signatures of various point defects in bulk …
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Mechanisms of cadmium tolerance in Populus
Cadmium (Cd), a known carcinogen and one of the leading heavy metal pollutants on a global scale, is released to the atmosphere through various industrial processes such as smelting and mining and other applications including manufacture of batteries and phosphate fertilizers. It causes many …
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The Effects of High Pressure on The Photovoltage Spectrum of Cadmium-Sulfide and Cadmium-Selenide Schottky Diodes
The effects of high pressure to 10 kilobars on the photovoltage spectrum of CdS and CdSe Schottky diodes has been investigated. These diodes exhibit a photovoltage at photon energies less than the energy gap of the semiconductor. This photovoltage is due to excitation of electrons from interface …
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Semiconductor nanocrystal colloids : manganese doped cadmium selenide, (core)shell composites for biological labeling, and highly fluorescent cadmium telluride
This thesis describes the characterization and applications of nanometer sized semiconductor (or quantum dot) colloids produced by chemical means. The nanocrystals are synthesized by pyrolysis of organometallic precursors in the coordinating solvent trioctylphosphine oxide (TOPO). The important …
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Switchgrass tolerance to cadmium: uptake and translocation
… to determine the interaction of (1) cultivar and cadmium (Cd)application, (2) soil pH and Cd application, and (3) soil moisture and Cd application on biomass accumulation and Cd allocation of switchgrass. In the first experiment, 'Alamo', 'Blackweir, 'Cave-in-Rock', and 'Trailblazer' switchgrass …
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Genetic variability and cadmium metabolism and toxicity
Abstract: Cadmium (Cd) is ubiquitous in the environment. Human exposure in non-smokers occurs mainly via intake of healthy food like vegetables, cereals, and shellfish. Adverse health effects on kidney and bone at low-level environmental Cd exposure are well-documented in adults. There is …
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Investigation of silicon-cadmium sulphide heterojunction photodetectors
Abstract available p. 4
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Structural studies of cadmium telluride thin films
… (a = 4.56 A , c = 7.48 A0 ) along with some pure cadmium and tellurium present in the films. In addition the electrical properties and its 9pendence upon these factors was determined. A maximum resistivity of 10 Ohm-metre was measured for films produced by flash evaporation at a substrate …
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