From fullerene acceptors to non-fullerene acceptors: prospects and challenges in the stability of organic solar cells

Speller, Emily M., Clarke, Andrew J., Luke, Joel, Lee, Harrison Ka Hin, Durrant, James R., Li, Ning, Wang, Tao, Wong, Him Cheng, Kim, Ji-Seon, Tsoi, Wing Chung and Li, Zhe 2019. From fullerene acceptors to non-fullerene acceptors: prospects and challenges in the stability of organic solar cells. Journal of Materials Chemistry A 7 (41) , pp. 23361-23377. 10.1039/C9TA05235F

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Abstract

The recent emergence of non-fullerene small molecule acceptors has reinvigorated the field of organic solar cells, already resulting in significant breakthroughs of their power conversion efficiency and discovery of remarkable new science. The stability and degradation of this class of materials and devices, on the other hand, has to date received relatively less attention. Herein, we present a critical review into the fundamentally different degradation mechanisms of non-fullerene acceptors compared to fullerene acceptors, as well as the very different roles they play upon the charge carrier generation and recombination kinetics and the resulting solar cell stability. We highlight in particular the prospect in the emergence of non-fullerene acceptors in addressing several major degradation mechanisms related to the use of fullerene acceptors, in conjunction with a number of unique degradation mechanisms that only exist in non-fullerene acceptors, which would provide an important guideline for further developments toward achieving long-term stability of organic solar cells.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Royal Society of Chemistry
ISSN:	2050-7488
Date of First Compliant Deposit:	26 June 2019
Date of Acceptance:	26 June 2019
Last Modified:	11 Nov 2023 21:46
URI:	https://orca.cardiff.ac.uk/id/eprint/123748

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