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

Autor: Vincent M. Goossens, Nataliia V. Sukharevska, Dmitry N. Dirin, Maksym V. Kovalenko, Maria A. Loi
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Cell Reports Physical Science, Vol 2, Iss 12, Pp 100655- (2021)
Druh dokumentu: article
ISSN: 2666-3864
DOI: 10.1016/j.xcrp.2021.100655
Popis: Summary: Nowadays, the best lead sulfide (PbS) colloidal quantum dot (CQD) solar cells are primarily demonstrated in the n-p structure, while the p-n structure is significantly less developed. This technological gap between the n-p and p-n structures is much more distinct than in cases of other solution-processable photovoltaic technologies like perovskites and polymers. Here, we propose a scalable fabrication strategy for efficient PbS QD solar cells with p-n structure. An industrially suited blade-coating technique has been used to deposit both n-type and p-type QD layers. The obtained solar cells demonstrated power conversion efficiency of 9%, thus, commensurate to the record device efficiency with this architecture fabricated with a non-scalable technique. The availability of both p-n and n-p structures fabricated from scalable methods may promote the future integration of the PbS QDs into tandem devices together with other solution-processable materials to exploit the most prominent benefits of the PbS QDs, such as infrared absorption.
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