Development of high efficiency segmented thermoelectric unicouples

T. Caillat*, J. P. Fleurial, G. J. Snyder, A. Borshchevsky

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

73 Scopus citations


Highly efficient, segmented thermoelectric unicouples incorporating advanced thermoelectric materials with superior thermoelectric figures of merit are currently being developed at the Jet Propulsion Laboratory (JPL). These segmented unicouples include a combination of state-of-the-art thermoelectric materials based on Bi2Te3 and novel p-type Zn4Sb3, p-type CeFe4Sb12-based alloys and n-type CoSb3-based alloys developed at JPL. The maximum predicted thermal to electrical efficiency is about 15% for a hot-side temperature of 975K and a cold-side temperature of about 300K. Various segmentations have been explored and several unicouples have been fabricated and tested. The set-up for testing these unicouples is described in this paper and some of the tests results reported. I-V curves have been generated for selected unicouples. The results show that experimental thermal to electrical efficiency values close to theoretical predicted values have been measured.

Original languageEnglish (US)
Title of host publicationInternational Conference on Thermoelectrics, ICT, Proceedings
Number of pages4
StatePublished - Dec 1 2001
Event20th International Conference on Thermoelectrics ICT'01 - Beijing, China
Duration: Jun 8 2001Jun 11 2001


Other20th International Conference on Thermoelectrics ICT'01

ASJC Scopus subject areas

  • Engineering(all)


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