| Download | - View final version: Low-cost silicon phthalocyanine as a non-fullerene acceptor for flexible large area organic photovoltaics (PDF, 6.9 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/acsomega.2c07131 |
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| Author | Search for: Sundaresan, Chithiravel1; Search for: Vebber, Mário C.2; Search for: Brusso, Jaclyn L.2ORCID identifier: https://orcid.org/0000-0001-9959-2015; Search for: Tao, Ye; Search for: Alem, Salima1; Search for: Lessard, Benoît H.2ORCID identifier: https://orcid.org/0000-0002-9863-7039 |
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| Affiliation | - National Research Council of Canada. Advanced Electronics and Photonics
- University of Ottawa
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| Funder | Search for: University of Ottawa; Search for: Natural Sciences and Engineering Research Council of Canada |
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| Format | Text, Article |
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| Subject | deposition; layers; organic polymers; power conversion efficiency; solvents |
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| Abstract | We demonstrate large-area (1 cm²) organic photovoltaic (OPVs) devices based on bis(tri-n-butylsilyl oxide) silicon phthalocyanine (3BS)₂-SiPc as a non-fullerene acceptor (NFA) with low synthetic complexity paired with poly(3-hexylthiophene) (P3HT) as a donor polymer. Environment-friendly nonhalogenated solvents were used to process large area OPVs on flexible indium tin oxide (ITO)-coated polyethylene terephthalate (PET) substrates. An alternate sequentially (Alt-Sq) blade-coated active layer with bulk heterojunction-like morphology is obtained when using (3BS)₂-SiPc processing with o-xylene/1,3,5-trimethylbenzene solvents. The sequential (Sq) active layer is prepared by first blade-coating (3BS)₂-SiPc solution followed by P3HT coated on the top without any post-treatment. The conventional sequentially (Sq) blade-coated active layer presents very low performance due to the (3BS)₂-SiPc bottom layer being partially washed off by processing the top layer of P3HT. In contrast, alternate sequentially (Alt-Sq) blade-coated layer-by-layer film shows even better device performance compared to the bulk heterojunction (BHJ) active layer. Time-of-flight secondary ion mass spectroscopy (TOF-SIMS) and atomic force microscopy (AFM) reveal that the Alt-Sq processing of the active layer leads to a BHJ-like morphology with a well-intermixed donor–acceptor component in the active layer while providing a simpler processing approach to low-cost and large-scale OPV production. |
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| Publication date | 2022-12-19 |
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| Publisher | ACS Publications |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ac6106ce-2836-4e5f-84b8-f199e5af741a |
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| Record created | 2023-08-31 |
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| Record modified | 2023-08-31 |
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