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1. (WO2017032943) IMPROVED THERMOELECTRIC ELEMENT AND THERMOELECTRIC CONVERTER INCLUDING AT LEAST ONE SUCH ELEMENT

Pub. No.:    WO/2017/032943    International Application No.:    PCT/FR2016/052091
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Aug 19 01:59:59 CEST 2016
IPC: H01L 35/08
H01L 35/18
Applicants: UNIVERSITE DE LORRAINE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Inventors: GECZI, Eugen
JACQUOT, Alexandre
KENFAUI, Driss
KOGUT, Iurii
LENOIR, Bertrand
MASSCHELEIN, Philippe
Title: IMPROVED THERMOELECTRIC ELEMENT AND THERMOELECTRIC CONVERTER INCLUDING AT LEAST ONE SUCH ELEMENT
Abstract:
The invention relates to a thermoelectric element, which is especially for a thermoelectric converter, including an assembly of constituent layers comprising a central layer made of p- or n-type thermoelectric material, then, in an assembly direction, and on each side of said central layer, an intermediate layer forming a diffusion barrier followed by a buffer layer made of composite metal material, said buffer layers being intended to be securely fastened to metal electrodes, characterised in that the cumulative thickness of the two buffer layers is larger than or equal to 50% of the thickness of the central layer, and preferably larger than or equal to 100% of the thickness of the central layer and very preferably larger than or equal to 200% of the thickness of the central layer, and in that the constituent material of the buffer layers is an alloy of two metals chosen from the family: Tix Ag1-x, Vx Fe1-x, Vx Ag1-x, Tix Fe1-x, where 0 < x < 1.