8967 K
46 pp.
 
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TitleSynthesis and Evaluation of Single Layer, Bilayer, and Multilayer Thermoelectric Thin Films
Author(s)Farmer, J. C.; Barbee, T. W. Jr.; Chapline, G. C. Jr.; Olsen, M. L.; Foreman, R. J.; Summers, L. J.; Dresselhaus, M. S.; Hicks, L. D.
Publication DateJanuary 20, 1995
Report NumberUCRL-ID--119652
Unique IdentifierACC0420
Other NumbersLegacy ID: DE95017026; OSTI ID: 93595
Research OrgLawrence Livermore National Laboratory (LLNL), CA (United States)
Contract NoW-7405-ENG-48
Sponsoring OrgU.S. Department of Energy (DOE), Washington, DC (United States)
Subject30 Direct Energy Conversion ;36 Materials Science; Thermoelectric Materials; Chemical Preparation; Physical Properties; Thermoelectric Conversion; Bismuth Tellurides; Lead Tellurides; Sputtering; Thermodynamic Properties; Electrical Properties; Thickness; Thin Films; Silicon Alloys; Germanium Alloys; Boron Carbides; Silicon; Lead Selenides; Seebeck Effect; Antimonides
Related Web PagesMildred [Millie] Dresselhaus and her Impacts on Science and Women in Science
AbstractThe relative efficiency of a thermoelectric material is measured in terms of a dimensionless figure of merit, ZT. Though all known thermoelectric materials are believed to have ZT{le}1, recent theoretical results predict that thermoelectric devices fabricated as two-dimensional quantum wells (2D QWs) or one-dimensional (ID) quantum wires could have ZT{ge}3. Multilayers with the dimensions of 2D QWs have been synthesized by alternately sputtering thermoelectric and barrier materials onto a moving single-crystal sapphire substrate from dual magnetrons. These materials have been used to test the thermoelectric quantum well concept and gain insight into relevant transport mechanisms. If successful, research could lead to thermoelectric devices that have efficiencies close to that of an ideal Carnot engine. Ultimately, such devices could be used to replace conventional heat engines and mechanical refrigeration systems.
8967 K
46 pp.
 
View Document 
  


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