Nearly monodisperse PbS quantum dots for highly efficient solar cells: an in situ seeded ion exchange approach

Abstract

A facile in situ seeded ion exchange approach was used to produce nearly monodisperse and uniformly distributed PbS quantum dots (QDs) on mesoporous TiO₂ films. This strategy solves the size distribution problem for conventional SILAR-processed QDs and shows promise for constructing high-performance near-infrared-responsive PbS QD solar cells.