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 10 of 10 for “"Defect Energy"”.
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X-ray scattering and lattice dynamics studies for impurity effects on the para-to-ferroelectric phase transformation behavior in lead titanate and barium titanate
… and anharmonicity including the creation of the defect energy. Its role in the para-to-ferroelectric transition has been investigated on two prototypical perovskite ferroelectrics, PbTiO$\sb3$ and BaTiO$\sb3.$
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Multi-pulse nonlinear optical spectroscopy and light-matter interactions in layered materials.
… that underscores many applications from solar energy conversion to optical sensing of biological materials. The use of multiple pulses to study these interactions are especially useful in understanding the nonlinear optical properties of materials. Transition metal dichalcogenides such as …
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Using molecular dynamics simulations to quantify the energy stored in irradiation defects in tungsten and aluminum
… replacement for the DPA is the Wigner stored energy, which is a measurement of the energy stored in radiation defects. To prepare for future experimental work, irradiation in tungsten and aluminum was simulated and analyzed for trends in defect energy. With increasing amounts of radiation …
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Defect characterization of antimonide-based type-II superlattices for infrared detection
… generated by inelastic scattering of high-energy electrons, we develop theoretical models to characterize minority carrier diffusion length and surface recombination velocity in photodetectors along the growth direction. When applied to photodiodes with strain management layers incorporated …
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DEFECTS AND LIFETIME PREDICTION OF GERMANIUM MOSFETS
… for Si is inapplicable to Ge devicesand defect properties in Ge and Si MOSFETs are different.The threshold voltage degradation in Ge can be nearly 100% recovered under a much lower temperature than that in Si devices. The defect losses observed in Si devices were absent in Ge/GeO2/Al2O3. …
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Study of deep level defects of N+-CdS/P-CdTe solar cells
… cells. There is no real distinction between defects and impurities in CdTe solar cells as both act as beneficial dopants or detrimental traps unlike Si where intentional shallow dopants and traps are distinctly different. Therefore, the role of defect states on CdTe solar cell performance, …
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Constraining Metamorphic and Tectonic Evolution in Convergent Terranes: How Trace Elements and Mineral Inclusions Shape Mechanical and Reconstructive Models
… with dynamic recrystallization. We applied defect energy simulations and took a global assessment of deformed quartz trace element chemistries to infer that sweeping grain boundaries provide short pathways that allows localized re-equilibration with a Ti-undersaturated medium, resulting in …
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Underlying deformation behavior of medium/high entropy alloys using advanced electron imaging and diffraction
… tolerance. Their complex chemistries create rich defect energy landscapes and multiple pathways for mechanical deformation, yet the link between local structure and deformation mechanisms remains incompletely resolved in M/HEAs. This thesis investigates the local structure and deformation …
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Dislocation core energies and magnetic exchange interactions from first-principles energy density method
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Development of Solar Sensitive Thin Film for Water Splitting and Water Heating using Solar Concentrator
Photocatalytic water splitting using solar energy could contribute to the solution of environmental and energy issues related to the hydrogen production. Key research area in this field is the development of photo-catalyst able to provide high energy conversion efficiency. TiO2 has been mostly …