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 37 for “"thermoelectric applications"”.
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Silicon nanowires : photovoltaic and thermoelectric applications
… til að framleiða sólarhlöð og varmahlöð (e. thermoelectric cell), byggð á örgrönnum kísilvírum, til orkuvinnslu. Kostir nanóvíra í sólarhlöðum eru m.a. stórt eðlisyfirborð og þar með meiri ljósupptaka (þ.e. aukin ljósgleypni). Varmahlöð framleiða rafstraum með því því að virkja …
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Semiconductor Nanomaterial Development For Photovoltaic And Thermoelectric Applications
… Among various approaches, photovoltaics and thermoelectrics have been more and more attentive both in academia and industry. Photovoltaic power generators can significantly decrease carbon dioxide emission by directly converting sunlight into electricity, and thermoelectric power generators …
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Electrodeposition of multilayered nanostructures for giant magnetoresistance and thermoelectric applications
… nanotubes for giant magneto resistance (GMR) applications and bismuth telluride nanotubes for thermoelectric applications are presented in this dissertation. The motivation for the multilayer electrodeposition is the investigation of giant magnetoresistance (GMR), a change in the material …
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Synthesis and characterization of metal chalcogenide nanostructured materials for thermoelectric applications
… materials with the potential to exhibit enhanced thermoelectric (TE) properties is reported. The tellurides, specifically PbTe and Bi⊂2⊂Te⊂3⊂ (Bi⊂2⊂Te⊂3⊂–Sb⊂2⊂Te⊂3⊂ alloys) were selected as these are well established TE materials in bulk form. The approaches used for nanostructuring are (1) …
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Fabrication, characterization and theoretical modeling of Te-doped Bi nanowire systems for thermoelectric applications
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Thermoelectric transport in rare-earth compounds
The focus of this thesis lies on the thermoelectric transport properties of rare-earth compounds containing Ce, Eu, and Yb. These systems have been investigated either to study fundamental problems or to evaluate their potential for thermoelectric applications.
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Interplay between chemical bonding, band structure and charge transport in thermoelectric chalcogenides
Thermoelectric power generators could aid reducing the carbon footprint of mankind by converting waste heat into electricity. Extensive research is being conducted to identify materials with suitable thermoelectric figures of merit. Yet, the values required have been elusive so far. The best …
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NANOSCALE ENERGY TRANSPORT IN PHOTOVOLTAIC AND THERMOELECTRIC NANOMATERIALS
… nanocrystals are promising for photovoltaic and thermoelectric applications due to the size-tuned electrical, thermal, and optical properties. For example, they can be size-tuned to emit and absorb light in a specific wavelength range. Their small size also makes multiple exciton generation …
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THERMAL AND THERMOELECTRIC PROPERTIES OF TWO-DIMENSIONAL HETEROSTRUCTURES
… due to their interesting physics and potential applications. Van der Waals heterostructures with one 2D material stacked on another, are being established for devices with new functionalities and improved properties. The study of thermal properties is important for heat management of electronic …
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Correlation between structure, doping and performance of thermoelectric materials
Thermoelectric materials can convert thermal energy into electrical energy and vice-versa. They are widely used in energy harvesters, thermal sensors, and cooling systems. However, the low efficiency and high cost of the known material compositions limit their widespread utilization in electricity …
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Design, synthesis, and characterization of complex chalcogenides for energy storage and energy conversion applications
… is on rationally designing new materials for applications in sodium and lithium ion conducting solid electrolytes, cathodes, thermoelectrics, and nonlinear optics. Along with the experimental studies, theoretical calculations are also employed to better understand the physicochemical …
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Storage and transport of energy in nanostructures
… examined as a candidate material for thermoelectric applications to harvest waste heat. We designed and fabricated a device to gauge the thermoelectric figure of merit of nano-structured materials by simultaneous characterization of thermal, electrical and seebeck properties. Using the …
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The effect of crystalline orientation and band non-parabolicity on the electronic properties of bismuth nanowires
… have generated much interest in both optical and thermoelectric applications. Two especially interesting features of bismuth nanowires are the non-parabolic nature of the electronic energy bands near the Fermi level and the large anisotropy of the carrier pockets. As a result of these features, …
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Atomistic and ab initio prediction and optimization of thermoelectric and photovoltaic properties
… electronic band gaps E,, which are relevant to thermoelectric and photovoltaic applications, respectively, and develop or modify computational tools for predicting and optimizing these properties. For lattice thermal conductivity, we study SiGe nanostructures, which are technologically important …
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Experimental determination of the thermoelectric properties of porous silicon nanowires
"The thermoelectric properties of nanostructured silicon have attracted significant attention in recent work. The objective is to reduce thermal conductivity through the introduction of phonon scattering mechanisms while preserving charge transport. Initial reports on electrolessly etched silicon …
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Thermoelectric Properties of Zr0.5Hf0.5Ni1-xPdxSn0.99Sb0.01 and Effect of Nanoinclusions on Transport Properties of Half Heuslers
<p> <p>Thermoelectric materials convert temperature gradients into electricity and vice-versa. These materials utilize the Seebeck effect for power generation and function without moving parts and are highly reliable. The efficiency of thermoelectric devices is related to the dimensionless figure …
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Numerical Investigation of Various Heat Transfer Performance Enhancement Configurations for Energy Harvesting Applications
… automobiles can contribute upto 15,900 GWh/year. Thermoelectric generators (TEGs) can be employed to capture some of this otherwise wasted heat and to convert this heat into useful electrical energy. This field of research as compared to gas turbine industry has emerged recently over past 30 …
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Novel Engineered Nanostructured Complex Oxide for High Temperature Thermoelectric Power Generation
Thermoelectric power generators are a promising technology that can produce electrical power directly from waste heat emitted in energy production and consumption systems. The essential component of thermoelectric generators is the thermoelectric material which performs the energy conversion …
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Electrical and thermal transport in 2- and 3-dimensional periodic holey silicon
… elements on earth, is a promising candidate for thermoelectric applications in the form of different nanostructures. It has been conclusively demonstrated that boundary scattering in nanostructured silicon e ectively reduces thermal transport, resulting in an enhanced thermoelectric Figure of …
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Thermoelectric Properties and Transport of Semicrystalline Conjugated Polymer and Single-Wall Carbon Nanotube Composites
… carbon nanotubes (CNT):polymer composites for thermoelectric applications have greatly expanded in recent years, aiming to combine the high power factor of CNT networks and the low thermal conductivity of polymer matrix. Many attempts have been made on achieving the …
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