A conceptional approach to materials for resistivity switching and thermoelectrics

Olivier Osters (1) , Melanie Bawohl (1) , Jean-Louis Bobet (2) , Bernard Chevalier (2) , Rodolphe Decourt (2) , Tom Nilges (1)

1 Institut für Anorganische und Analytische Chemie
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Recently silver(I)-(poly)chalcogenides have received special interest in energy conversion materials because of their thermoelectric and resistivity switching properties. In order to understand these features, a new topological principle has been developed, which is an useful tool to plan new synthesis strategies and to vary functional properties. It has been shown that anion substitution is powerful tool to tune the physical properties in terms of a thermoelectric performance optimization. Herein we report on the recently introduced substance class of silver(I)-(poly)chalcogenidehalides and the well-established class of silver(I)-chalcogenidehalides. We focus our report on the electrochemical behaviour of all known silver-(poly)telluridehalides Ag₁₀Te₄Br₃, Ag₂₃Te₁₂Br, Ag₂₀Te₁₀BrI,Ag₅Te₂Cl and selected substituted phases.

Domaines: Matériaux

Olivier Osters, Melanie Bawohl, Jean-Louis Bobet, Bernard Chevalier, Rodolphe Decourt, et al.. A conceptional approach to materials for resistivity switching and thermoelectrics. Solid State Sciences, 2011, 13 (5), pp.944-947. ⟨10.1016/j.solidstatesciences.2011.02.012⟩. ⟨hal-00593853⟩