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Transport Properties of 40% La Filled Skutterudite Thin Films - Theory and Instrumentation

Attanayake, Harsha
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1209739396

Abstract Details

2008, Master of Science (MS), Bowling Green State University, Physics.
This study researches thin films fabricated by pulsed-laser ablation on tempered glass substrates using 40% La filled-Skutterudite. In general, laser ablated films exhibit up to 70% amorphous structure and vary in thickness by about 20% from center to edge. The thermoelectric figure of merit determined using a modified version of the Harman equation at room temperature approaches a value of 18. The modifications include the effects of the substrate and its thickness. An empirical figure of merit obtained using the voltage measurements under adiabatic and isothermal conditions was extrapolated to zero substrate thickness. A total of 16 samples were prepared in three ablation runs with different substrate thickness and with an average film thickness of 95 nm. The higher figure of merit obtained compared to bulk samples can be the result of a variety of possibilities: enhanced Seebeck coefficient and size limited thermal conductivity in both electronic and lattice components due to limited mean free path.
Robert I. Boughton, PhD (Committee Chair)
Bruno Ullrich, PhD (Committee Member)
Haowen Xi, PhD (Committee Member)
40 p.
Energy; Materials Science; Physics
thermoelectric; figure of merit; skutterudite

Recommended Citations

Citations

  • Attanayake, H. (2008). Transport Properties of 40% La Filled Skutterudite Thin Films - Theory and Instrumentation [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1209739396

    APA Style (7th edition)

  • Attanayake, Harsha. Transport Properties of 40% La Filled Skutterudite Thin Films - Theory and Instrumentation. 2008. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1209739396.

    MLA Style (8th edition)

  • Attanayake, Harsha. "Transport Properties of 40% La Filled Skutterudite Thin Films - Theory and Instrumentation." Master's thesis, Bowling Green State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1209739396

    Chicago Manual of Style (17th edition)

bgsu1209739396
742
© 2008, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.