Title page for etd-0709118-080303


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URN etd-0709118-080303
Author Yi-Fen Tsai
Author's Email Address No Public.
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Department Materials and Optoelectronic Science
Year 2017
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The phase diagram and phase transition behavior of high zT value Sb-doped GeTe
Date of Defense 2018-06-20
Page Count 198
Keyword
  • isothermal section
  • GeTe
  • Ge-Te-Sb
  • liquidus projection
  • Thermoelectric
  • Abstract The industrial development and growing human activities have caused the increasing energy consumption and waste heat emission. Thermoelectric (TE) generator, which is capable of converting the undesired waste heat into the precious electricity through Seebeck effect, has been considered as one of the sustainability solutions. Cubic GeTe featured with high electrical and thermal conductivity is targeted in this study, and the thermal/electrical transport properties are tuned by the fluctuations in mass and phase region, with respect to the changing Sb doping amounts. The information of phase stability, microstructures and thermodynamic behaviors are illustrated by the isothermal section and liqiudus projection of ternary Ge-Te-Sb system, on the basis of the thermally-equilibrated or the as-quenched alloys. Several series of Sb-incorporated GeTe (GeaSb1-aTe, GeSbbTe1-b,…) are prepared by melt method and heat treatment, the thermoelectric transport properties are found to be correlated strongly with the starting compositions and secondary phases.
    Advisory Committee
  • Sinn-Wen Chen - chair
  • Liu-Wen Chang - co-chair
  • Pai-Chun Wei - co-chair
  • Hsin-Jay Wu - advisor
  • Files
  • etd-0709118-080303.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2018-08-09

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