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 7 of 7 for “"Defect Migration"”.
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The uncommon nature of point defects in organic-inorganic Perovskite solar cells
… properties that contributed to this success is "defect tolerance": in organic-inorganic perovskites, the majority of point defects with low formation energy are shallow, with energies within or near the conduction or valence band. Defects with deep states, which act as electronic traps, are …
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Low temperature annealing of electron irradiated germanium
… irradiated with 1.1 MeV electrons at SOK. The defects produced have been studied by measuring the voltage-dependent capacitance of a metal-germanium junction formed at the surface of a germanium sample. These measurements were made at lOoK and directly gave the fixed charge density near the …
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The Influence of Defect-Solute Interactions on Segregation of Au Implanted Into Binary Ni Alloys at Elevated Temperatures
… segregation effects attributable to fluxes of defects established by the irradiating beam. At elevated temperatures, the amount of Au retained in the target declined dramatically, losses that attributed to sputtering from a monolayer established at the surface by Gibbsian Segregation. …
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A new age of fuel performance code criteria studied through advanced atomistic simulation techniques
… damage displacement results in a multitude of defects that influence the fuel performance. Nuclear reactions are coupled, in that changing one variable will alter others through feedback. In the field of fuel performance modeling, these difficulties are addressed through the use of empirical …
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Development of a Multiscale Atomistic Code to Investigate Self-Organized Pattern Formation Induced by Ion Irradiation
… mass redistribution due to single-ion impacts. Defect migration, which is missing in previous models using crater functions, is treated by a kMC Arrhenius model. Using this model, a systematic study was performed for silicon bombarded by Ar+ions of various energies (100 eV, 250 eV, 500 eV, 700 …
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Computer simulation of defect evolution in lanthanum doped cerium dioxide under irradiation
… modeling methods are applied to explore the defect evolution in cerium dioxide under irradiation condition. In this study, conventional atomic potential for the cerium dioxide system with xenon, implanted as an important fission product, and lanthanum, doped to simulate trivalent solid …
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Machine-Learning Assisted Atomic Simulations of Defect Dynamics in Multicomponent Concentrated Alloys
This dissertation investigates the complex defect diffusion behaviors in concentrated solid solution alloys (CSAs) including high-entropy alloys (HEAs), which are critical for understanding their exceptional mechanical and radiation-resistant properties. Through a combination of multiple …