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 85 for “"Thermoelectric materials."”.
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Nanocomposites as thermoelectric materials
Thermoelectric materials have attractive applications in electric power generation and solid-state cooling. The performance of a thermoelectric device depends on the dimensionless figure of merit (ZT) of the material, defined as ZT = S2o-T / k, where S is the Seebeck coefficient, o is the …
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Solution Synthesized Nanostructured Thermoelectric Materials
Thermoelectric heat engines are currently used in several niche applications for electricity generation and cooling. Many additional applications would be practical if thermoelectric materials with improved figures of merit could be made. Over the past twenty years, many nanostructured materials …
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Half-Heusler Thermoelectric Materials and Modules
… of available energy. A rapid development of thermoelectric (TE) materials that can directly convert heat into electricity through the Seebeck effect, opens promising pathway for harvesting the thermal energy from the surroundings. In order to harvest the high-quality waste heat at elevated …
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Advancing the computational exploration for thermoelectric materials
In the computational search for new thermoelectric materials, high-throughput, semi- empirical models have proven to be one of the more fruitful approaches. The best models take into account both electronic and thermal properties since good thermoelectric materials must maintain a difficult balance …
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Photoacoustic measurement of bandgaps of thermoelectric materials
Thermoelectric materials are a promising class of direct energy conversion materials, usually consisting of highly doped semiconductors. The key to maximizing their thermal to electrical energy conversion lies in optimizing three inter-related material properties, thermal conductivity, electrical …
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Extracting thermoelectric materials information using natural language processing
This thesis aims to empower thermoelectric materials discovery through data-driven methods. Materials discovery has been traditionally guided by the intuition of researchers and trial-and-error. This approach can be greatly accelerated by applying data-oriented methods which rely on high-quality …
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The Fabrication of Thermoelectric Materials Using Functionalised Silicon Nanoparticles
… produced by solution methods. Silicon based materials are a potential alternative to current thermoelectric materials (e.g. Bi2Te3) due to their abundance and low toxicity. Phenylacetylene functionalised SiNPs have been synthesised using a bottom up approach. A cold pressed pellet of this …
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Oxide based thermoelectric materials for large scale power generation
The thermoelectric (TE) devices are based on the Seebeck and Peltier effects, which describe the conversion between temperature gradient and electricity. The effectiveness of the material performance can be described by its figure of merit, ZT, which is defined as ZT = [alpha]²[sigma]T / [kappa] , …
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Nanoscale electron, phonon and spin transport in thermoelectric materials
… energy technologies are in urgent need. Thermoelectric materials are a group of materials that can directly convert heat into electricity. Being solid state, clean, reliable and without moving parts, thermoelectric energy conversion holds great promise as a candidate technology to harvest …
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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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Computational discovery, design and optimization of high-performance thermoelectric materials
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-05-01
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Modeling the thermoelectric properties of bulk and nanocomposite thermoelectric materials
Thermoelectric materials are materials which are capable of converting heat directly into electricity. They have long been used in specialized fields where high reliability is needed, such as space power generation. Recently, certain nanostructured materials have been fabricated with high …
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Transport of phonons and electrons in thermoelectric materials and graphene
… energy conversion and information devices. Thermoelectric materials, which directly convert heat to electricity or vice versa, require both extremely low thermal conductivity and high thermoelectric power factor. However, a good understanding of low thermal conductivity is still lacking even …
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Application of Thermomechanical Characterization Techniques to Bismuth Telluride Based Thermoelectric Materials
The thermoelectric properties of bismuth telluride based thermoelectric (TE) materials are well-characterized, but comparatively little has been published on the thermomechanical properties. In this paper, dynamic mechanical analysis (DMA) and differential scanning calorimetry data for bismuth …
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Heat transport in Thermoelectric materials: from Layered systems to organic crystals
Thermoelectricity (TE) is a promising and sustainable source of energy that manage to convert wasted heat into electricity using the Seebeck effect. A good material for TE application should have with low thermal conductivity (k) and high Seebeck coefficient and electrical conductivity, because TE …
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Understanding and designing carbon-based thermoelectric materials with atomic-scale simulations
Thermoelectric (TE) materials, which can convert unused waste heat into useful electricity or vice versa, could play an important role in solving the current global energy challenge of providing sustainable and clean energy. Nevertheless, thermoelectrics have long been too inefficient to be …
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Novel thermoelectric materials development, existing and potential applications, and commercialization routes
Thermoelectrics (TE) are devices which can convert heat in the form of a temperature gradient into electricity, or alternatively generate and absorb heat when an electrical current is run through them. It was established in the 1950's that the effectiveness of a thermoelectric could approximately …
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Fabrication and Characterization of Thermoelectric Materials and Their Stable Contacts at Elevated Temperatures
… role in maintaining high device performance in thermoelectric (TE) generators and coolers. In order to achieve 95% device efficiency, the contact resistance needs to be < 10% of the total leg resistance. Therefore, stable contact electrodes with low contact resistivity are necessary to ensure …
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Breaking the thermo-mechanical coupling of thermoelectric materials : determining the viability of a thermoelectric generator
Thermoelectric power generators (TEGs) convert a temperature difference into electricity. This temperature difference can be created from waste heat. Since up to 50% [1] of US industrial energy input is lost as waste heat, an economical means of recovering waste heat and converting it into useful …
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