Platinum@regular indium oxide nanooctahedra as difunctional counter electrodes for dye-sensitized solar cells

Abstract

Platinum (Pt) nanoparticles below 2 nm loaded on In₂O₃ nanooctahedra were prepared with the assistance of polymer ligands, and applied as efficient difunctional counter electrode (CE) materials for dye-sensitized solar cells (DSCs). Owing to the excellent light scattering performance of regular nanooctahedra, the light harvesting efficiency was significantly increased, resulting in the noticeable 19.5% enhancement of energy conversion efficiency.