Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication

Jonathan D'Angelo; Jarrod L. Short; Adam D. Downey; Michael A. Pajor; Timothy P. Hogan; Duck Young Chung; Mercouri G. Kanatzidis; Ed Timm; Harold Schock

Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication

Jonathan D'Angelo, Jarrod L. Short, Adam D. Downey, Michael A. Pajor, Timothy P. Hogan, Duck Young Chung, Mercouri G. Kanatzidis, Ed Timm, Harold Schock

Northwestern University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

Low electrical contact resistance is essential for the fabrication of high efficiency thermoelectric generators. These contacts must be stable to high temperatures and through thermal cycling. Here we present the fabrication procedure and characterization of several contacts to Pb-Sb-Ag-Te (LAST) compounds. Contact materials investigated include tungsten, antimony, tin, nickel, and a bismuth antimony based solder. The contacts were typically deposited by an electron beam evaporation method after careful preparation of the sample surface. The resistances were measured by using the transmission line model (TLM), and ohmic behavior was verified through current vs. voltage measurements. The best contact resistivities of less than 20 μΩ·cm ² have been measured for annealed antimony to n-type LAST samples. We present these procedures for fabricating low resistance contacts and the use of these contact materials toward the fabrication of high efficiency thermoelectric generator modules.

Original language	English
Title of host publication	Materials Research Society Symposium Proceedings
Pages	317-322
Number of pages	6
Publication status	Published - May 8 2006
Event	2005 Materials Research Society Fall Meeting - Boston, MA, United States Duration: Nov 28 2005 → Dec 1 2005

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	886
ISSN (Print)	0272-9172

Other

Other	2005 Materials Research Society Fall Meeting
Country	United States
City	Boston, MA
Period	11/28/05 → 12/1/05

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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D'Angelo, J., Short, J. L., Downey, A. D., Pajor, M. A., Hogan, T. P., Chung, D. Y., Kanatzidis, M. G., Timm, E., & Schock, H. (2006). Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication. In Materials Research Society Symposium Proceedings (pp. 317-322). (Materials Research Society Symposium Proceedings; Vol. 886).

Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication. / D'Angelo, Jonathan; Short, Jarrod L.; Downey, Adam D.; Pajor, Michael A.; Hogan, Timothy P.; Chung, Duck Young; Kanatzidis, Mercouri G.; Timm, Ed; Schock, Harold.

Materials Research Society Symposium Proceedings. 2006. p. 317-322 (Materials Research Society Symposium Proceedings; Vol. 886).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

D'Angelo, J, Short, JL, Downey, AD, Pajor, MA, Hogan, TP, Chung, DY, Kanatzidis, MG, Timm, E & Schock, H 2006, Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication. in Materials Research Society Symposium Proceedings. Materials Research Society Symposium Proceedings, vol. 886, pp. 317-322, 2005 Materials Research Society Fall Meeting, Boston, MA, United States, 11/28/05.

D'Angelo, Jonathan ; Short, Jarrod L. ; Downey, Adam D. ; Pajor, Michael A. ; Hogan, Timothy P. ; Chung, Duck Young ; Kanatzidis, Mercouri G. ; Timm, Ed ; Schock, Harold. / Investigation of low resistance contacts to Pb-Sb-Ag-Te (LAST) materials for module fabrication. Materials Research Society Symposium Proceedings. 2006. pp. 317-322 (Materials Research Society Symposium Proceedings).

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abstract = "Low electrical contact resistance is essential for the fabrication of high efficiency thermoelectric generators. These contacts must be stable to high temperatures and through thermal cycling. Here we present the fabrication procedure and characterization of several contacts to Pb-Sb-Ag-Te (LAST) compounds. Contact materials investigated include tungsten, antimony, tin, nickel, and a bismuth antimony based solder. The contacts were typically deposited by an electron beam evaporation method after careful preparation of the sample surface. The resistances were measured by using the transmission line model (TLM), and ohmic behavior was verified through current vs. voltage measurements. The best contact resistivities of less than 20 μΩ·cm 2 have been measured for annealed antimony to n-type LAST samples. We present these procedures for fabricating low resistance contacts and the use of these contact materials toward the fabrication of high efficiency thermoelectric generator modules.",

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AB - Low electrical contact resistance is essential for the fabrication of high efficiency thermoelectric generators. These contacts must be stable to high temperatures and through thermal cycling. Here we present the fabrication procedure and characterization of several contacts to Pb-Sb-Ag-Te (LAST) compounds. Contact materials investigated include tungsten, antimony, tin, nickel, and a bismuth antimony based solder. The contacts were typically deposited by an electron beam evaporation method after careful preparation of the sample surface. The resistances were measured by using the transmission line model (TLM), and ohmic behavior was verified through current vs. voltage measurements. The best contact resistivities of less than 20 μΩ·cm 2 have been measured for annealed antimony to n-type LAST samples. We present these procedures for fabricating low resistance contacts and the use of these contact materials toward the fabrication of high efficiency thermoelectric generator modules.

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