LaLonde, Aaron D. and Pei, Yanzhong and Snyder, G. Jeffrey (2011) Reevaluation of PbTe_(1−x)I_x as high performance n-type thermoelectric material. Energy and Environmental Science, 4 (6). pp. 2090-2096. ISSN 1754-5692 http://resolver.caltech.edu/CaltechAUTHORS:20110620-135016047
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Thermoelectric transport properties of n-type PbTe_(1−x)I_x with carrier concentrations ranging from 5.8 × 10^(18)–1.4 × 10^(20) cm^(−3) are reinvestigated from room temperature to 800 K. The electronic transport properties, resistivity and Seebeck coefficient in this study are effectively consistent with prior reports, however the thermal conductivity has been found to be historically overestimated. The reassessment of the thermal transport properties, in combination with careful control of the carrier density by iodine doping, reveals a significantly larger figure of merit, zT ~ 1.4, than often previously reported for n-type PbTe. The results and analysis of the data from this study lead to a redetermination of zT for this historical thermoelectric material and provide a renewed interest in n-type PbTe based materials.
|Additional Information:||© 2011 Royal Society of Chemistry. Received 18 Mar 2011, Accepted 26 Apr 2011; First published on the web 19 May 2011. This work is supported by NASA-JPL and DARPA Nano Materials Program.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||20 Jun 2011 23:13|
|Last Modified:||20 Jun 2011 23:13|
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