Synthesis and physical characterization of thermoelectric single crystals
Name
837279318-MIT.pdf
Description
Full printable version
Size
7.07 MB
Format
Adobe PDF
Checksum (MD5)
7378e9f5a6e7780447a05e61fc712a68
Author(s)
Porras Pérez Guerrero, Juan Pablo
Advisor(s)
Young S. Lee.
Date Issued
2012
Publisher
Massachusetts Institute of Technology
Abstract
There is much current interest in thermoelectric devices for sustainable energy. This thesis describes a research project on the synthesis and physical characterization of thermoelectric single crystals. 1In₄Se₃-[delta] crystals were grown by different methods including the use of a floating zone furnace and a three-zone furnace, as well as different initial compositions. The samples obtained each time, either crystalline or powder, were analyzed using x-ray diffraction to find the phases present, and orientations in the case of crystals. The crystals were studied by the means of neutron scattering at Oak Ridge National Laboratory, and the results presented differences from previous literature reports and a non-zero intensity of forbidden Bragg peaks was noted. Simulations of the effect of Se vacancies in the crystal were executed to explore this last phenomenon. Measurements of the electrical resistivity p and Seebeck coefficient S of the crystal related to the figure of merit ZT = S₂T/pk were compared with the values presented by other groups.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 67-68).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
Persistent DSpace Link
