Enhancing the solubility of Mn in AgSbSe₂ for high thermoelectric performance through entropy engineering

Abstract

Point defects play an import role in regulating the electrical and thermal transport properties of thermoelectric materials, but it always restricted by the solubility of dopant in the matrix. Herein,...

High-entropy materials for thermoelectric applications: towards performance and reliability

“…234 Roychowdhury et al applied the entropy-driven concept for a GeSe-based material, and the reported ZT for (GeSe) 0.5 (AgBiSe 2 ) 0.5 was found to be 0.45 at 677 K. 235 The incorporation of AgBiSe into the GeSe portion resulted in a transition of the material's conductivity from the p- to the n-type, leading to a substantial increase in the carrier concentration from 1.2 × 10 17 cm −3 recorded for the pure GeSe compound to 3.29 × 10 18 cm −3 . 235 Ma et al 236 applied the entropy-driven concept to increase the solubility of Mn in AgSbSe 2 , increasing it from 8% to 30% by utilizing the entropy-driven concept by alloying with MnSe. They found a remarkable ZT value of 0.96 and 1.18 at 750 K for (AgSbSe 2 ) 0.7 (MnSe) 0.3 (Fig.…”