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 14 of 14 for “"Material Stability"”.
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Investigation of Instability of a Single Crystal Organic –Inorganic Hybrid Perovskites Used for Photovoltaic Solar Application.
… requires consideration of efficient and reliable materials. Halide hybrid perovskites as a single crystal have been shown to efficient materials for photonic applications which include photovoltaic devices and photodetectors. However, the research lacks understanding of stability mechanisms of …
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Self-assembly of lead-halide-perovskite laser particles
… lead halide perovskites (LHP) as a novel material for scalable production of laser particles in a lab flask. I discovered a sonochemical method to produce a large quantity (10 billions/L) of high-quality LHP micro- and sub-micron particles in a polar solvent within minutes. This method …
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Surface Characteristics of Silica Polyamine Composites
… coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical techniques including NMR (both solution state and solid state), mercury porosimetry, and …
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Surface Characteristics of Silica Polyamine Composites
… coordination environments, measuring surface stability, and comparisons with analogous materials. Application of SPC materials as supports for heterogeneous catalysts was also investigated. Analytical techniques including NMR (both solution state and solid state), mercury porosimetry, and …
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Spectroscopic Studies of Excited States in Carbene-Metal-Amide Emitters
… lack of stable and efficient blue-emitting materials has been a long-standing problem which limits the general usefulness of current OLED technologies. As such, development of new materials for and approaches to light emission in OLEDs is a very active area of research. Carbene-Metal-Amides …
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Resolving oxidation phenomena in layered semiconductors and scaled heterogeneous integration for low-power electronics
Efficient materials development demands high-throughput experimental workflows and prompt feedback loops across all stages, from materials growth to device fabrication and quality control. There is a crucial need for characterisation approaches that can resolve both intricate structure-property …
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The application of colloidal photocatalysis in actinide photoredox chemistry
… of acid photodissolution of Sn02 have confirmed material stability under illuminated conditions. The Ce4 VCe3 system is widely used as a non-radioactive, thermodynamic analogue of the Pu4 fPu3 system. Thus, valence control experiments have concentrated on studying the light-on transient behaviour …
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Metal-TiO2 nanocomposites towards efficient solar-driven photocatalysis
… and reverse osmosis). In this sense, new materials such as nanocomposites may overcome these issues taking advantage of the peculiar properties of materials at nanoscale. Research on novel nanotechnologies must bring advances in order to contrast and prevent water scarcity and pollution. …
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Fundamental understanding and design principles of oxide/metal surfaces for lithium storage
… importance of metal oxyfluoride species toward material stability and cell efficiency. The reaction kinetics, catalyst effects and reaction mechanism of Li-O2 batteries were investigated by developing electrochemical model systems i.e., rotating disk electrode and Li2O2-filled composite …
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Fabricating and Tailoring Halide Perovskites for Photovoltaic Applications
… a contemporary global concern, and research of materials for solar energy harvesting is the heart of potential solutions for the energy crisis. Halide perovskites are leading candidates to replace silicon in next generation solar cells. This thesis focuses on halide perovskite materials, aiming …
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Laser Surface Texturing, Crystallization and Scribing of Thin Films in Solar Cell Applications
… silicon. However, their overall efficiency and stability are less than that of their bulk crystalline counterpart. The work presented in this thesis seeks to investigate these issues via a series of experimental and numerical analysis of the influences of laser processing on microstructure, …
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Thermodynamic modeling of martensitic transformations in shape memory alloys.
… (MTs) which correspond to a lattice level instability of the crystal structure. Currently, there exists a shortage of material models that can capture the details of lattice level MTs occurring in SMAs. In the first part of this work, an effective interaction potential (EIP) model is …
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Hybrid organic/inorganic nanotubes of imogolite type
… of TEOS, methyl-imogolite (Me-IMO), a nanotube material with formula (OH)3Al2O3SiCH3, is obtained in place of the standard imogolite (OH)3Al2O3SiOH (IMO) (I. Bottero et al. PCCP 7(13), 2011, 744 -750). Post-synthesis grafting of the outer surface of Me-IMO with 3-aminopropyltriethoxysilane …
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Optimization of layered battery cathode materials synthesized via spray pyrolysis
… techniques for the synthesis of Li-ion battery materials are critically needed to address the requirement of a clean and efficient transportation sector. The current research serves this goal by developing an approach to producing layered cathode materials with superior electrochemical …