Phase-engineered high-entropy metastable FCC Cu_2-y Ag _y (In _x Sn_1-x )Se₂S nanomaterials with high thermoelectric performance.

ABSTRACT: Crystal-phase engineering to create metastable polymorphs is an effective and powerful way to modulate the physicochemical properties and functions of semiconductor materials, but it has been rarely explored in thermoelectrics due to concerns over thermal stability. Herein, we develop a combined colloidal synthesis and sintering route to prepare nanostructured solids through ligand retention. Nano-scale control over the unconventional cubic-phase is realized in a high-entropy Cu_2-y Ag _y (In _x Sn_1-x )Se₂S (x = 0-0.25, y = 0, 0.07, 0.13) system by surface-ligand protection and size-driven phase stabilization. Different from the common monoclinic phase, the unconventional cubic-phase samples can o

SUBMITTER: Zhang W 

PROVIDER: S-EPMC9473540 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature