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						<h1 itemprop="headline">General Physics Colloquium - Bo Brummerstedt Iversen: &#039;Thermoelectric Energy Conversion&#039;</h1>
						
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														Wednesday 10  December 2014,
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														&nbsp;at 15:15 -  16:00
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<h2>General Physics Colloquium</h2>
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<p><strong>Title:</strong> 'Thermoelectric Energy Conversion'
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<p><strong>Speaker:</strong> Bo Brummerstedt Iversen, Center for Materials Crystallography, Department of Chemistry &amp; iNANO, Aarhus University
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<p><strong>Abstract:</strong>
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<p>Thermoelectric effects have been known for almost two hundred years, but they are still at the forefront of materials research and solid state physics. The reason is that it remains a fundamental challenge to optimize opposing contributions to the thermoelectric figure of merit, zT = TS<sup>2</sup>s/k, where T is absolute temperature, S is the thermopower, s is the electrical conductivity and k is the thermal conductivity. For the past 15 years we have studied a wide range of thermoelectric materials including chalcogenides, antimonides, clathrates, skutterudites, silicides and more [1]. In this talk I will exemplify some of the main ideas for increasing the power factor (S<sup>2</sup>s) and lowering the thermal conductivity in materials, and then focus on recent research on the Zn-Sb system.
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<p>[1] B. B. Iversen, “Phonon Glass Electron Crystal materials for thermoelectric energy conversion”, Thesis for the Doctor of Technology Degree, Technical University of Denmark, 2010
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<p><em>Wine and cheese will be served at 4 PM</em></p>
								
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