Progress in colloidal quantum dot photovoltaic performance

摘要

The past year has seen continued growth in power conversion efficiencies (PCE) of colloidal quantum dot (CQD) solar cells. This progress has become possible owing to advances in almost every aspect of the photovoltaic device: materials for the active layer to improve light absorption and transport properties and reduce recombination losses; controlled doping; contacts with optimized band alignments, and new device architectures. Record PCE for all-CQD photovoltaics has reached 7.6% and further progress is expected as loss mechanisms are unveiled and methods are developed to reduce them.