ASU Electronic Theses and Dissertations
This collection includes most of the ASU Theses and Dissertations from 2011 to present. ASU Theses and Dissertations are available in downloadable PDF format; however, a small percentage of items are under embargo. Information about the dissertations/theses includes degree information, committee members, an abstract, supporting data or media.
In addition to the electronic theses found in the ASU Digital Repository, ASU Theses and Dissertations can be found in the ASU Library Catalog.
Dissertations and Theses granted by Arizona State University are archived and made available through a joint effort of the ASU Graduate College and the ASU Libraries. For more information or questions about this collection contact or visit the Digital Repository ETD Library Guide or contact the ASU Graduate College at gradformat@asu.edu.
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- All Subjects: Alternative Energy
Description
Solar energy is a disruptive technology within the electricity industry, and rooftop solar is particularly disruptive as it changes the relationship between the industry and its customers as the latter generate their own power, sell power to the grid, and reduce their dependence on the industry as the sole source provider of electric power. Hundreds of thousands of people in the western United States have made the decision to adopt residential rooftop solar photovoltaic technologies (solar PV) for their homes, with some areas of western cities now having 50% or more of homes with solar installed. This dissertation seeks to understand how rooftop solar energy is altering the fabric of urban life, drawing on three distinct lenses and a mixed suite of methods to examine how homeowners, electric utilities, financial lenders, regulators, solar installers, realtors, and professional trade organizations have responded to the opportunities and challenges presented by rooftop solar energy. First, using a novel solar installation data set, it systematically examines the temporal, geographic, and socio-economic dynamics of the adoption of rooftop solar technologies across the Phoenix metropolitan area over the decade of the 2010s. This study examines the broad social, economic, and urban environmental contexts within which solar adoption has occurred and how these have impacted differential rates of solar uptake. Second, using survey and real estate data from the Phoenix metropolitan area, it explores how solar energy has begun to shape important social and market dynamics, illuminating how decision-making in real estate transactions, including by buyers, sellers, agents, lenders, and appraisers is shifting to accommodate houses with installed solar systems. Lastly, the study explores patterns of rooftop solar adoption across major electric utilities and what those can tell us about the extent to which corporate social responsibility and sustainability reporting have affected the practices of investor-owned electric utilities (IOU) within the western US.
ContributorsO'Leary, Jason (Author) / Fisher, Erik (Thesis advisor) / Miller, Clark (Thesis advisor) / Dirks, Gary (Committee member) / Arizona State University (Publisher)
Created2021
Description
Increased global demand for energy has led to prolific use of fossil fuels, which produce and release greenhouse gases, such as carbon dioxide. This increase in atmospheric carbon dioxide affects the global weather system and has been cited as a cause for global warming. For humans to continue to meet demands for energy while reducing greenhouse emission, a sustainable, carbon-neutral energy source must be developed. The sun provides energy for the majority of life on earth, as well as the energy stored in the chemical bonds of fossil fuels. This dissertation investigates systems inspired by the biological mechanism of solar energy capture and storage. In natural photosynthesis, organisms use chlorophyll as a chromophore to absorb the sun's energy. Bio-inspired systems use close analogues like porphyrins and phthalocyanines. In this dissertation, a soluble, semiconducting porphyrin is reported. The polymer was synthesized via a Buchwald-Hartwig style coupling of porphyrin monomers which produced a polyaniline-like chain with porphyrins incorporated into the backbone. Spectroscopic and electrochemical studies were performed, which show evidence of excited state charge transfer and a first oxidation state of 0.58 V (vs SCE). These properties suggest that the polymer could be involved in excited state electron donation to fullerenes and other electron acceptors, which could be beneficial in organic photovoltaics, sensors, and other applications. Molecular dyads and triads capable of charge separation have been studied for decades, and the spectroscopic properties of two novel systems are reported in this dissertation. A peripherally-connected zinc-phthalocyanine-C60 dyad was studied, and showed excited state electron transfer from the phthalocyanine excited state to the C60, with a long-lived charge separated state. An axially-linked carotene-Si-pthalocyanine-C60 triad was studied, showing excited state electron transfer from the phthalocyanine to the C60, but fast recombination before hole transfer can occur to the carotene. Analogues of the electron transport mechanisms used in many biological systems use iron-sulfur clusters to shuttle electrons from donors to acceptors. In this dissertation, the spectroscopic properties of a de novo protein were studied. Nanosecond transient absorption was used to characterize the electron and energy transfer of an excited water-soluble porphyrin to the oxidized [FeS] clusters incorporated in the de novo protein. The triplet state of the porphyrin was strongly quenched with the holo-protein without a rise in porphyrin plus signal, suggesting that only Dexter-type energy transfer occurs between the sensitized porphyrin and the [FeS] clusters.
ContributorsSchmitz, Robert (Author) / Gust, John D (Thesis advisor) / Jones, Anne K (Committee member) / Buttry, Daniel (Committee member) / Arizona State University (Publisher)
Created2014