Order–Disorder Transition in AgCrSe 2 : a New Route to Efficient Thermoelectrics

Franck Gascoin (1) , Antoine Maignan (1)

1 CRISMAT - Laboratoire de cristallographie et sciences des matériaux

The ultralow thermal conductivity of AgCrSe2 is achieved by taking advantage of the cationic disorder in the interlayer spacing of the structure. This leads to a thermoelectric figure of merit higher than 1 at 800K. This unique case opens the route to the discovery of other efficient thermoelectric materials.

Mots clés: Amorphous materials; Phonons; Silver; Thermal conductivity; Thermoelectric materials; Thermoelectric; Phase transition; Selenides; Layered structure

Domaines: Chimie; Matériaux

Franck Gascoin, Antoine Maignan. Order–Disorder Transition in AgCrSe 2 : a New Route to Efficient Thermoelectrics. Chemistry of Materials, 2011, 23 (10), pp.2510-2513. ⟨10.1021/cm200581k⟩. ⟨hal-02264223⟩