biostudies-literatureUnknown13(35)Zhang WCrystal-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 Cu2-y Ag y (In x Sn1-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 oChemical science10461-10471https://www.ebi.ac.uk/biostudies/studies/S-EPMC9473540biostudies-literaturePhase-engineered high-entropy metastable FCC Cu2-y Ag y (In x Sn1-x )Se2S nanomaterials with high thermoelectric performance.PMC9473540Zhang WDong HXu BLou YPantelides STFeng TShi ZWu FTiwari JfalsePhase-engineered high-entropy metastable FCC Cu2-y Ag y (In x Sn1-x )Se2S nanomaterials with high thermoelectric performance.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 Cu2-y Ag y (In x Sn1-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 o2022-01-01T00:00:00Z2022 Sep2025-04-26T00:58:21.069Z2024-12-04T09:34:30.425ZS-EPMC94735403627763410.1039/d2sc02915d