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Title: Sputter deposition of multilayer thermoelectric films: An approach to the fabrication of two-dimensional quantum wells

Abstract

The relative efficiency of a thermoelectric material is measured in terms of a dimensionless figure of merit, {ital ZT}. Though all known thermoelectric materials are believed to have {ital ZT}{le}1, recent theoretical results predict that thermoelectric devices fabricated as two-dimensional quantum wells (2D QWs) or one-dimensional (1D) quantum wires could have {ital ZT}{ge}3. Multilayers with the dimensions of 2D QWs have been synthesized by alternately sputtering Bi{sub 0.9}Sb{sub 0.1} and PbTe{sub 0.8}Se{sub 0.2} 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, this 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. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Authors:
; ; ; ;  [1]; ;  [2]
  1. Chemistry and Materials Science Department, University of California, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)
  2. Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Boston, Massachusetts 02139 (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
83893
Report Number(s):
CONF-940830-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 95:016944
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 316; Journal Issue: 1; Conference: 13. international conference on thermoelectrics, Kansas City, MO (United States), 30 Aug - 1 Sep 1994; Other Information: PBD: 10 Aug 1994
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; THERMOELECTRIC MATERIALS; THERMOELECTRIC PROPERTIES; BISMUTH ALLOYS; ANTIMONY ALLOYS; LEAD SELENIDES; LEAD TELLURIDES; THIN FILMS; LAYERS; ELECTRIC CONDUCTIVITY; THERMAL CONDUCTIVITY; SEEBECK EFFECT; SUPERLATTICES; TEMPERATURE DEPENDENCE

Citation Formats

Farmer, J C, Barbee, Jr, T W, Chapline, Jr, G C, Foreman, R J, Summers, L J, Dresselhaus, M S, and Hicks, L D. Sputter deposition of multilayer thermoelectric films: An approach to the fabrication of two-dimensional quantum wells. United States: N. p., 1994. Web. doi:10.1063/1.46804.
Farmer, J C, Barbee, Jr, T W, Chapline, Jr, G C, Foreman, R J, Summers, L J, Dresselhaus, M S, & Hicks, L D. Sputter deposition of multilayer thermoelectric films: An approach to the fabrication of two-dimensional quantum wells. United States. https://doi.org/10.1063/1.46804
Farmer, J C, Barbee, Jr, T W, Chapline, Jr, G C, Foreman, R J, Summers, L J, Dresselhaus, M S, and Hicks, L D. Wed . "Sputter deposition of multilayer thermoelectric films: An approach to the fabrication of two-dimensional quantum wells". United States. https://doi.org/10.1063/1.46804.
@article{osti_83893,
title = {Sputter deposition of multilayer thermoelectric films: An approach to the fabrication of two-dimensional quantum wells},
author = {Farmer, J C and Barbee, Jr, T W and Chapline, Jr, G C and Foreman, R J and Summers, L J and Dresselhaus, M S and Hicks, L D},
abstractNote = {The relative efficiency of a thermoelectric material is measured in terms of a dimensionless figure of merit, {ital ZT}. Though all known thermoelectric materials are believed to have {ital ZT}{le}1, recent theoretical results predict that thermoelectric devices fabricated as two-dimensional quantum wells (2D QWs) or one-dimensional (1D) quantum wires could have {ital ZT}{ge}3. Multilayers with the dimensions of 2D QWs have been synthesized by alternately sputtering Bi{sub 0.9}Sb{sub 0.1} and PbTe{sub 0.8}Se{sub 0.2} 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, this 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. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.},
doi = {10.1063/1.46804},
url = {https://www.osti.gov/biblio/83893}, journal = {AIP Conference Proceedings},
number = 1,
volume = 316,
place = {United States},
year = {1994},
month = {8}
}