Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 30, Issue 46, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202004477
Keywords
design principles; isomerization strategy; nonfullerene acceptors; organic solar cells
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Funding
- Shenzhen Science and Technology Program [KQTD20170330110107046]
- National Basic Research Program of China [2013CB834805]
- National Natural Science Foundation of China (NSFC) [21572171]
- Innovative Research Group of Hubei Province [2015CFA014]
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Nonfullerene acceptors (NFAs) are a current focus of research on bulk-heterojunction organic solar cells (OSCs), as they can exhibit strong absorption, suitably matched energy levels, and good stability. Isomerization affords a new material design strategy for nonfullerene small-molecule acceptors (SMAs). In this article, the development of isomeric nonfullerene SMAs, including isomeric perylene diimide (PDI)-based nonfullerene SMAs and isomeric acceptor-donor-acceptor (A-D-A)-type nonfullerene SMAs, is reviewed. The general design principles for isomeric SMAs and the key structure-property relationships are comprehensively surveyed and discussed. The remaining challenges and promising future directions of isomeric nonfullerene acceptors are presented.
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