A simple strategy to achieve shape control of Au-Cu2−xS colloidal heterostructured nanocrystals and their preliminary use in organic photovoltaics

Abstract

Au-Cu_2−xS Janus nanostructures with a shape-controlled semiconductor part are successfully built. The key parameters for controlling the morphology of Cu_2−xS in Au-Cu_2−xS are demonstrated. Coupled local surface plasmon resonance (LSPR) properties in these Au-Cu_2−xS NCs give them potential for application in polymer solar cells (PSCs) as an efficient dopant.