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University of New Orleans Theses and Dissertations

Theses/Dissertations

2011

Half Heusler, thermoelectric, nanoinclusions, nanomaterial

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Thermoelectric Properties Of Zr0.5hf0.5ni1-Xpdxsn0.99sb0.01 And Effect Of Nanoinclusions On Transport Properties Of Half Heuslers, Rumana Yaqub Aug 2011

Thermoelectric Properties Of Zr0.5hf0.5ni1-Xpdxsn0.99sb0.01 And Effect Of Nanoinclusions On Transport Properties Of Half Heuslers, Rumana Yaqub

University of New Orleans Theses and Dissertations

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 of merit for the constituent materials, defined as where S is the Seebeck coefficient, is the electrical conductivity, is the thermal conductivity and T is the temperature. Maximizing ZT is very challenging because of interdependence of parameters, for example, increasing the electrical conductivity by increasing the carrier concentration invariably lowers S and vice versa. Presently numerous thermoelectric materials are being investigated by …