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 20 of 41 for “"Solar energy harvesting"”.
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Metal Oxide Semiconductors for Solar Energy Harvesting
The correlation between energy consumption and human development illustrates the importance of this societal resource. We will consume more energy in the future. In light of issues with the status quo, such as climate change, long-term supply and security, solar energy is an attractive source. It …
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Upconversion Phosphors for Efficient Solar Energy Harvesting
… of the near-infrared (NIR) region in solar harvesting applications, such as semiconductor photocatalysis, necessitated the incorporation of upconverters, which are capable of absorbing multiple NIR photons absorbed and emit UV-Visible photons. This study investigates the emission …
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SOLAR ENERGY HARVESTING WITH PHOTOSYNTHETIC PIGMENT-PROTEIN COMPLEXES
… a process by which plants and algae convert solar energy, water, and carbon dioxide into biomass, is a key player that sustains nearly every form of life on earth. Central to this process are the photosynthetic pigment-protein complexes that transduce sunlight into biologically useful forms …
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Singlet exciton fission : applications to solar energy harvesting
… state into two excited states of half the energy. When used in solar cells it can double the photocurrent from high energy photons increasing the maximum theoretical power efficiency to greater than 40%. The steady state singlet fission rate can be perturbed under an external magnetic …
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HIGHLY-CONCENTRATED SUNLIGHT SEPARATION FOR WIDE-SPECTRUM SOLAR ENERGY HARVESTING
… (c-Si) cell has limited photons in the lower energy states from forming electron-hole pairs for electricity generation. Resultantly, the majority portion of AM1.5 spectrum (1.2 μm ≤ λ ≤ 2.5 μm) that cannot undergo PV conversion often contribute to thermal degradation of c-Si cells and waste …
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Luminescent solar concentrator structures for solar energy harvesting and radiation control
Luminescent solar concentrators are devices capable of converting some spectral components of solar radiation by luminescence and concentrating them before collection by photovoltaic. The aim of this thesis is to design, develop and demonstrate the principle of all-inorganic semitransparent …
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Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting
The finite difference time domain method was used to simulate the optical response of plasmonic composites with one and two nanoscale spherical metallic inclusion(s): Ag/Cu in Air/SiO2) with various diameters and compositions. Fair agreement was found between simulation and effective medium …
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Solar energy harvesting and software enhancements for autonomous wireless smart sensor networks
… number of new power supply options, such as energy harvesting, used in full-scale SHM applications. This research develops a solar energy harvesting system to provide power to Imote2 WSS platform and increase the long-term autonomy of wireless smart sensor networks (WSSNs). The approach is …
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Micro-photovoltaic materials and systems for solar energy harvesting and light management
Photovoltaics (PV) enable energy harvesting of Earth’s most abundant 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 …
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Ultra-thin photovoltaic technologies with nanophotonic textures for enhanced solar energy harvesting
Ultra-thin solar cells are a nascent photovoltaic strategy that holds ample advantages compared to conventional thick technologies, spanning from cost and material savings to low weight and flexibility. Solar cells on this length-scale also exhibit intrinsic tolerance to radiation damage, thus …
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Three-dimensional nanotube arrays for solar energy harvesting and production of solar fuels
… to provide a solution towards a renewable energy future. Fabricating high-efficiency photovoltaic devices largely rely on nanostructuring the photoabsorber layers due to the ability of improving photoabsorption, photocurrent generation and transport in nanometer scale. Vertically aligned, …
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Maximizing efficiency of solar energy harvesting systems supplying a microgrid using an embedded system
… system, by contributing to the optimization of energy withdrawn from the PV panel using an embedded system. For this purpose, the model of the PV panel is first studied in accordance with the real behavior of the PV panel. The single diode model of the PV panel is first developed in Matlab …
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An engineering analysis of natural and biomimetic self-repair processes for solar energy harvesting
… in an effort to develop biological light-harvesting devices with prolonged lifetimes. We demonstrate the first synthetic photoelectrochemical cell capable of mimicking key aspects of the self-repair process. Surfactant addition and removal was used to signal between the disassembly and …
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Electrochemical and spectroscopic studies of bodipy dyes and nanostructured electrodes for solar energy harvesting and conversion
… global climate change. To achieve the global energy demand, advanced energy technologies for renewable and sustainability applications have been gaining much attention. Among several promising approaches, stable organic chromophores and nanostructured materials have provided new opportunities …
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Solar energy harvesting and grid integration: Data visualization, MPPT optimization, and advanced PQ control of inverters
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Design and Modification of Polyazine-Bridged Ru(II),Rh(III) Bimetallic and Trimetallic Supramolecular Complexes Applicable in Solar Energy Harvesting for the Photocatalytic Reduction of Water to Hydrogen
The goal of this research was to develop a series of mixed-metal supramolecular complexes through systematic component variation to better understand the role of structural modification on basic chemical and photochemical properties including photocatalysis of H₂O to H₂. Varying bidentate …
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Three-dimensional metallic architectures for photonic and energy storage applications
… and especially interesting for photonic and energy storage applications. Sacrificial templates are commonly used for the fabrication of materials possessing 3D structure. Self-assembly is particularly attractive for applications demanding large-area templates at low cost. This work focused on …
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Full spectrum utilization for high-efficiency solar energy conversion
Today, two dominant strategies for solar energy harvesting exist: solar thermal and photovoltaic. Solar thermal energy harvesting offers the distinct ability to both utilize the full solar spectrum and provide dispatchable electrical power to the grid. By contrast, the generation of power via the …
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Photoelectrochemical and photophysical studies of carbon nanotube and molybdenum disulfide based light harvesting devices
<p>There is a critical need in utilizing solar radiation as a renewable energy source. While photovoltaic solar cells are widely used, much attention has been devoted in the past decade to developing nanotechnology for potential cost reduction and improved device efficiency and reliability. …
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Smart Prismatic Louver Technology for Enhanced Daylighting and Management of Thermal Loads in Green Buildings
… design strategies for mitigating building energy consumption are daylight redirection and solar energy harvesting. Good daylighting implementation enhances the amount of useful natural light within a space, thereby offsetting the need for electric lighting. Solar energy harvesting systems …
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