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Highly Efficient Binary Solvent Additive‐Processed Organic Solar Cells by the Blade‐Coating Method
Author(s) -
Fo WanZhen,
Xu Gui Ying,
Dong HaoJie,
Liu LinNa,
Li Yao Wen,
Ding Lei
Publication year - 2021
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.202100062
Subject(s) - chlorobenzene , coating , organic solar cell , crystallinity , acceptor , energy conversion efficiency , materials science , solvent , chemical engineering , chloroform , spin coating , polymer chemistry , polymer , chemistry , nanotechnology , composite material , organic chemistry , optoelectronics , catalysis , physics , condensed matter physics , engineering
Blade‐coating, a prototype tool for slot‐die coating is a promising technique showing high compatibility with large‐area roll‐to‐roll coating. Here, a high‐performance PM6:Y6‐based device is fabricated with chlorobenzene (CB) through a novel binary solvent additive (1‐chloronaphthalene (CN):diphenyl ether (DPE)). It can be found that the binary solvent additive can improve the crystallinity of the acceptor and forms a better phase separation domain, which would promote the effective separation of charge and inhibit charge recombination. As a result, high power conversion efficiency (PCE) of 15.77% can be achieved with the spin‐coating method, which is similar to the best organic solar cells (OSCs) processed with chloroform (CF) solution. Moreover, a blade‐coated OSC is also processed with CB and demonstrates a promising PCE of 11.69% with large‐area device (1.2 cm 2 ). These results are critical for the large‐scale production of highly efficient OSCs.