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Advanced thermoelectric material development at JPLA large number of planetary missions under consideration for the next two decades will be using radioisotope thermoelectric generators to provide the necessary spacecraft electrical power. Performance, reliability, lifetime and cost of these RTGs are expected to be more demanding and will require the development of advanced thermoelectric materials. An advanced thermoelectric materials development program is being conducted by JPL and is the subject of this paper. Under this program, alloys of rare earth chalcogenides have been synthesized and their thermoelectric properties evaluated. The selection of specific compounds on which the program is currently concentrating is influenced by criteria such as low thermal conductivity, reasonably high operating temperatures (not less than 1000 C) and stability of the compounds. The paper discusses the rationale, approach and current status of the program. In addition, the thermoelectric and thermophysical property measurement used to evaluate the materials are described. The preliminary results and analysis of these experimental data are also given.
Document ID
19800064218
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Stapfer, G.
Lockwood, A.
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Energy to the 21st century
Location: Seattle, WA
Start Date: August 18, 1980
End Date: August 22, 1980
Accession Number
80A48388
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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