Issue 13, 2021

Sequential deposition enables high-performance nonfullerene organic solar cells

Abstract

Bulk-heterojunction active layers prepared by a blend casting (BC) method have been predominantly used for more than two decades in the construction of organic/polymer solar cells (OSCs) with high efficiencies and stability. Sequential deposition (SD) with donor and acceptor layers coated sequentially is a facile but effective strategy to fabricate efficient OSCs and holds great promise to address the drawbacks of bulk-heterojunctions. Compared with OSCs prepared by the BC method, SD processed OSCs can separately engineer different layers, realizing an ideal profile of vertical component distribution, which is favorable for charge generation, transport and collection. SD processed OSCs based on nonfullerene acceptors have progressed rapidly, with a striking power conversion efficiency (PCE) up to >18% achieved recently. In this review, we summarize recent advances in the optimization of SD processed OSCs with particular emphasis on the role of processing solvents and co-solvents, solvent additives and the third components. Moreover, we comprehensively discuss the impact of the SD method on device stability and provide an overview of the potential of the SD method in constructing large-area solar cell panels. Finally, we outline the existing challenges and prospects of the SD method in industrial production. We hope that this review can provide some inspiration for the performance improvement of SD processed OSCs and advance their commercial applications.

Graphical abstract: Sequential deposition enables high-performance nonfullerene organic solar cells

Article information

Article type
Review Article
Submitted
16 mars 2021
Accepted
26 avr. 2021
First published
27 avr. 2021

Mater. Chem. Front., 2021,5, 4851-4873

Sequential deposition enables high-performance nonfullerene organic solar cells

M. Li, Q. Wang, J. Liu, Y. Geng and L. Ye, Mater. Chem. Front., 2021, 5, 4851 DOI: 10.1039/D1QM00407G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements