Skip to main content Accessibility help
×
Home
Hostname: page-component-559fc8cf4f-q7jt5 Total loading time: 0.303 Render date: 2021-03-07T06:11:57.650Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

Optimizing Thermoelectric Efficiency of La3-xTe4 with Calcium Metal Substitution

Published online by Cambridge University Press:  18 January 2013

Samantha M. Clarke
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A. Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90092, U.S.A.
James M. Ma
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90092, U.S.A.
C.-K. Huang
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A.
Paul A. von Allmen
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A.
Trinh Vo
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A.
Richard B. Kaner
Affiliation:
Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90092, U.S.A. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90092, U.S.A.
Sabah K. Bux
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A.
Jean-Pierre Fleurial
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, U.S.A.
Get access

Abstract

La3-xTe4 is a state-of-the-art high temperature n-type thermoelectric material with a previously reported maximum zT∼1.1 at 1273 K. Computational modeling suggests the La atoms play a crucial role in defining the density of states for La3-xTe4 in the conduction band. In addition to controlling charge carrier concentration, substitution with Ca2+ atoms on the La3+ site is explored as a potential means to tune the density of states and result in larger Seebeck coefficients. High purity, oxide-free samples are produced by ball milling of the elements and consolidated by spark plasma sintering. Powder XRD and electron microprobe analysis are used to characterize the material. High temperature thermoelectric properties are reported and compared with La3-xTe4 compositions. A maximum zT of 1.3 is reached at 1273 K for the composition La2.22Ca0.775Te4.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below.

References

May, A., Fleurial, J.-P., Snyder, G., Physical Review B 78, 112 (2008).CrossRef
May, A., Singh, D., Snyder, G., Physical Review B 79, 14 (2009).
May, A. F., Fleurial, J.-P., Snyder, G. J., Chemistry of Materials 22, 29952999 (2010).CrossRef
May, A., Snyder, J., Fleurial, J.-P., El-Genk, M. S., AIP Conference Proceedings 969, 672678 (2008).CrossRef
Mccormack, J. A., Fleurial, J., Materials Research Society Symposium Proceedings 234, 135143 (1991).CrossRef
Wood, C., Zoltan, D., Stapfer, G., 56, 719–722 (1985).
Delaire, O. et al. ., Physical Review b 80, 19 (2009).CrossRef

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 17 *
View data table for this chart

* Views captured on Cambridge Core between September 2016 - 7th March 2021. This data will be updated every 24 hours.

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Optimizing Thermoelectric Efficiency of La3-xTe4 with Calcium Metal Substitution
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Optimizing Thermoelectric Efficiency of La3-xTe4 with Calcium Metal Substitution
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Optimizing Thermoelectric Efficiency of La3-xTe4 with Calcium Metal Substitution
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *