Plasmonic Au Decorated CdS Nanowire Arrays for Enhanced Photoelectrochemical Hydrogen Evolution

In this work, an exciton-plasmon coupled system comprising hexagonal CdS nanowire and Au nanoparticle has been synthesized, characterized and tested in photoelectrochemical (PEC) water-splitting experiment. The significantly improved device performance of the Au@CdS hybrid in comparison to that of bare CdS nanowires has been primarily attributed to plasmon-induced hot electron injection from Au nanoparticles into adjacent CdS nanowires.