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Recent Advances in Nonfullerene Acceptor-Based Layer-by-Layer Organic Solar Cells Using a Solution Processopen access

Authors
Jee, Min HunRyu, Hwa SookLee, DongminLee, WonhoWoo, Han Young
Issue Date
9월-2022
Publisher
WILEY
Keywords
layer-by-layer; nonfullerene acceptors; organic photovoltaics; pseudo-planar heterojunction
Citation
ADVANCED SCIENCE, v.9, no.25
Indexed
SCIE
SCOPUS
Journal Title
ADVANCED SCIENCE
Volume
9
Number
25
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143745
DOI
10.1002/advs.202201876
ISSN
2198-3844
Abstract
Recently, sequential layer-by-layer (LbL) organic solar cells (OSCs) have attracted significant attention owing to their favorable p-i-n vertical phase separation, efficient charge transport/extraction, and potential for lab-to-fab large-scale production, achieving high power conversion efficiencies (PCEs) of over 18%. This review first summarizes recent studies on various approaches to obtain ideal vertical D/A phase separation in nonfullerene acceptor (NFAs)-based LbL OSCs by proper solvent selection, processing additives, protecting solvent treatment, ternary blends, etc. Additionally, the longer exciton diffusion length of NFAs compared with fullerene derivatives, which provides a new scope for further improvement in the performance of LbL OSCs, is been discussed. Large-area device/module production by LbL techniques and device stability issues, including thermal and mechanical stability, are also reviewed. Finally, the current challenges and prospects for further progress toward their eventual commercialization are discussed.
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