Fabrication and characterization of single-pair thermoelectric generators of bismuth telluride using silver-sintering technology

AbstractThermoelectric modules are of great interest for power generation applications where temperature gradients of approximately 500K exist, and hot side temperatures near 800K. The fabrication of such modules requires optimization of the material compositions, low contact resistivities, and low thermal loss.AgPbmSbTe2+m (LAST) and Ag(Pb1-xSnx)m SbTe2+m (LASTT) compounds are among the best known materials appropriate for this temperature range. Various measurement systems have been developed and used to characterize bulk samples in the LAST and LASTT systems within this operating temperature range. From the characterized data, modeling of modules based on these materials and segmented legs using LAST(T) with Bi2Te3 have been used to identify the optimal geometry for the individual legs, and the length of the Bi2Te3 segments. We have segmented LAST(T) with Bi2Te3 and achieved contact resistivities of less than 10 μΩ•cm2.Here we give a detailed presentation on the procedures used in the fabrication of thermoelectric generators based on LAST, LASTT, and segmented with Bi2Te3 materials. We also present the output data on these generators.

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Fabrication and characterization of roll-type thin-film thermoelectric generators

Journal of Physics Conference Series ◽

10.1088/1742-6596/1052/1/012129 ◽

2018 ◽

Vol 1052 ◽

pp. 012129 ◽

Cited By ~ 8

Author(s):

J. Hamada ◽

K. Yamamoto ◽

M. Takashiri

Keyword(s):

Thin Film ◽

Thermoelectric Generators ◽

Roll Type ◽

Fabrication And Characterization

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Progress on the Fabrication and Characterization of High Efficiency Thermoelectric Generators

MRS Proceedings ◽

10.1557/proc-0886-f12-04 ◽

2005 ◽

Vol 886 ◽

Cited By ~ 1

Author(s):

Timothy P. Hogan ◽

Adam D. Downey ◽

Jarrod Short ◽

Jonathan J. D'Angelo ◽

Eric Quarez ◽

...

Keyword(s):

High Efficiency ◽

Thermoelectric Generators ◽

Systems Modeling ◽

New Materials ◽

Fabrication And Characterization ◽

Cascaded Structures ◽

Contact Resistivities ◽

Module Systems ◽

Detailed Presentation

ABSTRACTHigh efficiency thermoelectric modules are of great interest for power generation applications where hot side temperatures of approximately 800K exist. The fabrication of such modules requires a multidisciplinary effort for the optimization of the material compositions, the engineering of the module systems, modeling and fabrication of the devices, and constant feedback from characterization. Pb-Sb-Ag-Te (LAST) and Pb-Sb-Ag-Sn-Te (LASTT) compounds are among the best known materials for this temperature range. Modeling of these materials and possible cascaded structures shows efficiencies of 14% can be achieved for low resistance contacts. Using antimony we have achieved contact resistivities less than 20 µΩ·cm2. Here we give a detailed presentation on the procedures used in the fabrication of thermoelectric generators based on these new materials. We also present the characterization systems and measurements on these generators.

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