Scalable fabrication of efficient p-n junction lead sulfide quantum dot solar cells

Nowadays, the best lead sulfide (PbS) colloidal quantum dot (CQD) solar cells are primarily demonstrated in n-p structure, while p-n structure is significantly less developed. This technological gap between and structures much more distinct than cases of other solution-processable photovoltaic technologies like perovskites polymers. Here, we propose a scalable fabrication strategy for efficient PbS QD with structure. An industrially suited blade-coating technique has been used to deposit both n-type p-type layers. The obtained power conversion efficiency 9%, thus, commensurate record device this architecture fabricated non-scalable technique. availability from methods may promote future integration QDs into tandem devices together materials exploit most prominent benefits QDs, such as infrared absorption.