SCHEDULED MAINTENANCE
Solution-based synthesis and characterization of earth abundant Cu3(As,Sb)Se4 nanocrystal alloys: towards scalable room-temperature thermoelectric devices†
Abstract
A simple and scalable solution-based synthesis route for impurity free Cu3(As,Sb)Se4 nanocrystal alloys is reported. Additionally, a heat treatment process that eliminates many scalability limitations imposed by traditional sintering methods has been demonstrated to significantly improve both the grain structure and electronic properties of the Cu3(As,Sb)Se4 nanocrystal based thin films. The combination of a new synthetic pathway with a robust thin film processing methodology offers the promise of widespread application of these materials to many fields. We demonstrate the potential of this material system in a proof-of-concept energy conversion application. Here, the processed Cu3(As,Sb)Se4 nanocrystal thin films serve as room temperature thermoelectric materials demonstrating a large thermoelectric performance after heat treatment.
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