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High Figure of Merit Lead Selenide Doped with Indium and Aluminum for Use in Thermoelectric Waste Heat Recovery Applications at Intermediate Temperatures

Evola, Eric G.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1338307382

Abstract Details

2012, Master of Science, Ohio State University, Mechanical Engineering.
In this thesis, a study of lead selenide (PbSe) doped with the group III elements indium and aluminum is presented in the context of thermoelectric devices. Empirical transport measurements using synthesized bulk samples are presented and discussed with particular interest in resonant level effects which can increase the thermoelectric figure of merit. Using the measured transport data as input parameters, several material properties including Fermi level, effective mass and scattering parameter are calculated which further characterize the system. Although data from aluminum doped samples clearly show prominent resonant level effects at around 80K, this feature vanishes at elevated temperatures. In contrast, indium doped samples do not show any resonant level effect as indicated by the Pisarenko relation, but display very similar properties to aluminum especially at high temperatures. Indium is a very effective n-type dopant for temperature ranges corresponding to waste heat recovery in industrial applications and results in a high thermoelectric figure of merit (zT) in excess of 1.2 at 600K without using the relatively rare element tellurium.
Joseph Heremans (Advisor)
Sandip Mazumder (Committee Member)
71 p.
Materials Science; Mechanical Engineering
PbSe; indium; aluminum; resonant level; high zT; thermoelectric; figure of merit; lead selenide

Recommended Citations

Citations

  • Evola, E. G. (2012). High Figure of Merit Lead Selenide Doped with Indium and Aluminum for Use in Thermoelectric Waste Heat Recovery Applications at Intermediate Temperatures [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338307382

    APA Style (7th edition)

  • Evola, Eric. High Figure of Merit Lead Selenide Doped with Indium and Aluminum for Use in Thermoelectric Waste Heat Recovery Applications at Intermediate Temperatures. 2012. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1338307382.

    MLA Style (8th edition)

  • Evola, Eric. "High Figure of Merit Lead Selenide Doped with Indium and Aluminum for Use in Thermoelectric Waste Heat Recovery Applications at Intermediate Temperatures." Master's thesis, Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338307382

    Chicago Manual of Style (17th edition)

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© 2012, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.