Blade‐Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability
Abstract
Abstract Blade‐coating serving as a prototype tool for slot‐die coating can be very compatible with large‐area roll‐to‐roll coating. Using blade‐coating in an ambient environment, an average power conversion efficiency (PCE) of 10.03% is achieved in nonfullerene organic solar cells, which is higher than that of the optimal spin‐coated device with a PCE of 9.41%. It is demonstrated that blade‐coating can induce a higher degree of molecular packing for both conjugated polymer donors and small‐molecular acceptors as it helps to produce a seeding film containing numerous crystal grains, subsequently providing nucleation sites for the residual solution when the motion of the blade exposes a liquid front. Due to this effect, blade‐coating can partially replace the role of the additive 1,8‐diiodooctane (DIO) and thus achieves the optimized morphology with fewer additives. Moreover, it is found that the blade‐coated film with 0.25% DIO possesses not only a smaller domain size but also higher domain purity, suggesting more D/A (donor/acceptor) interfaces and a purer phase domain as compared to the spin‐coated film with 1% DIO. Encouragingly, the blade‐coated device with less DIO (0.25%) exhibits much better stability than the spin‐coated device with 1% DIO, showing excellent prospects.
- Authors:
-
[1]
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1433419
- Grant/Contract Number:
- DEAC02‐05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Materials
- Additional Journal Information:
- Journal Name: Advanced Materials Journal Volume: 30 Journal Issue: 22; Journal ID: ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Zhang, Lin, Lin, Baojun, Hu, Bo, Xu, Xianbin, and Ma, Wei. Blade‐Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability. Germany: N. p., 2018.
Web. doi:10.1002/adma.201800343.
Zhang, Lin, Lin, Baojun, Hu, Bo, Xu, Xianbin, & Ma, Wei. Blade‐Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability. Germany. https://doi.org/10.1002/adma.201800343
Zhang, Lin, Lin, Baojun, Hu, Bo, Xu, Xianbin, and Ma, Wei. Tue .
"Blade‐Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability". Germany. https://doi.org/10.1002/adma.201800343.
@article{osti_1433419,
title = {Blade‐Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability},
author = {Zhang, Lin and Lin, Baojun and Hu, Bo and Xu, Xianbin and Ma, Wei},
abstractNote = {Abstract Blade‐coating serving as a prototype tool for slot‐die coating can be very compatible with large‐area roll‐to‐roll coating. Using blade‐coating in an ambient environment, an average power conversion efficiency (PCE) of 10.03% is achieved in nonfullerene organic solar cells, which is higher than that of the optimal spin‐coated device with a PCE of 9.41%. It is demonstrated that blade‐coating can induce a higher degree of molecular packing for both conjugated polymer donors and small‐molecular acceptors as it helps to produce a seeding film containing numerous crystal grains, subsequently providing nucleation sites for the residual solution when the motion of the blade exposes a liquid front. Due to this effect, blade‐coating can partially replace the role of the additive 1,8‐diiodooctane (DIO) and thus achieves the optimized morphology with fewer additives. Moreover, it is found that the blade‐coated film with 0.25% DIO possesses not only a smaller domain size but also higher domain purity, suggesting more D/A (donor/acceptor) interfaces and a purer phase domain as compared to the spin‐coated film with 1% DIO. Encouragingly, the blade‐coated device with less DIO (0.25%) exhibits much better stability than the spin‐coated device with 1% DIO, showing excellent prospects.},
doi = {10.1002/adma.201800343},
journal = {Advanced Materials},
number = 22,
volume = 30,
place = {Germany},
year = {Tue Apr 17 00:00:00 EDT 2018},
month = {Tue Apr 17 00:00:00 EDT 2018}
}
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