A simple large-scale preparation and crystal phase control method for Cu2Se by exfoliation from copper foam under a Se-rich airflow

Abstract

In this work, Cu₂Se was successfully exfoliated from foam copper in a Se-rich airflow, and the crystal phase and morphology of Cu₂Se can be accurately regulated by controlling the exfoliation temperature. This investigation provides a novel strategy for the preparation of various crystal phases and morphologies of Cu₂Se, which is very simple and convenient in accurate and large-scale production.