46 pp.
46 pp.
| 8967 K 46 pp. | |
| View Document | ||
| Title | Synthesis 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 Date | January 20, 1995 | |
| Report Number | UCRL-ID--119652 | |
| Unique Identifier | ACC0420 | |
| Other Numbers | Legacy ID: DE95017026; OSTI ID: 93595 | |
| Research Org | Lawrence Livermore National Laboratory (LLNL), CA (United States) | |
| Contract No | W-7405-ENG-48 | |
| Sponsoring Org | U.S. Department of Energy (DOE), Washington, DC (United States) | |
| Subject | 30 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 Pages | Mildred [Millie] Dresselhaus and her Impacts on Science and Women in Science | |
| Abstract | The 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 | ||
