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 “"Amorphous silicon (a-Si)"”.
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Mechanisms of plastic deformation in amorphous silicon by atomistic simulation using the Stillinger-Weber potential
Molecular dynamics simulation of amorphous silicon (a-Si) using the Stillinger- Weber potential reveals the existence of two distinct atomic environments: one solidlike and the other liquidlike. The mechanical behavior of a-Si when plastically deformed to large strain can be completely described by …
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Topological Characterization of Amorphous Silicon Structures Using Voronoi-Volume Analysis
<p>We studied the structural properties of amorphous silicon (a-Si) through Voronoi volume analysis. Amorphous silicon exhibits a lack of long-range ordering, which leads to topological disorder, and it affects the atomic structure. Voronoi volumes of different a-Si structures have been measured by …
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Interfacial adhesion of thin film high energy density anode materials
… technologies. The demand for greater energy density, performance, and longevity has led to the development of numerous three-dimensional (3D) structured anodes that can leverage the incredible Li storage capacity of silicon. A common feature among many 3D structured anodes is the use of a nickel …
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Anti-reflection zinc oxide nanocones for higher efficiency thin-film silicon solar cells
Thin film silicon solar cells, which are commonly made from microcrystalline silicon ([mu]c-Si) or amorphous silicon (a-Si), have been considered inexpensive alternatives to thick polycrystalline silicon (polysilicon) solar cells. However, the low solar efficiency of these thin film cells has …
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Chemo-mechanics of lithium-ion battery electrodes
… in its degradation and ultimate failure. This thesis addresses the theoretical formulation, numerical implementation, and application of fully-coupled deformation-diffusion theories aimed at two different classes of electrode materials: (i) phase-separating electrodes, and (ii) amorphous Silicon …
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Lithiation-induced phase transitions in alloying anodes for thin film lithium-ion batteries
As a result of the ever-increasing demands for miniaturized autonomous devices, high-performance batteries compatible with micro-systems have been attracting researchers' attention. Amorphous silicon (a-Si) and germanium (a-Ge), which store lithium through alloying processes rather than through …
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Micro-transfer print integration of high-speed photodetectors to SOI platform
… and used in data centres, LIDAR and optical sensing. Among various approaches, micro-transfer printing emerges as a rapid and universally compatible integration technology to generate PICs. To implement this technology, it is necessary to separate the devices from their original substrate using …
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Performance evaluation of Photovoltaic (PV) modules under different deployment conditions
The purpose of this thesis is to evaluate the performance of solar modules, comprising various PV technologies, subject to different climatic conditions. The assessed PV technologies comprises of commercially available technologies and included Cadmium Telluride (CdTe), Copper Indium diSelenide …
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Micro-photovoltaic materials and systems for solar energy harvesting and light management
… resource: the sun. Electricity generation using silicon-based PV results in significantly less CO2 emissions than that from fossil fuel-based sources, and moderate commercial efficiencies (15 – 20%) as well as reductions in cost at the system-level have culminated in a installed global PV …