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An Alkylated Indacenodithieno[3,2‐b]thiophene‐Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses
Open accessAbstract
A new synthetic route, to prepare an alkylated indacenodithieno[3,2‐b]thiophene‐based nonfullerene acceptor (C8‐ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8‐ITIC exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize. Accordingly, blends with the donor polymer PBDB‐T exhibit a power conversion efficiency (PCE) up to 12.4%. Further improvements in efficiency are found upon backbone fluorination of the donor polymer to afford the novel material PFBDB‐T. The resulting blend with C8‐ITIC shows an impressive PCE up to 13.2% as a result of the higher open‐circuit voltage. Electroluminescence studies demonstrate that backbone fluorination reduces the energy loss of the blends, with PFBDB‐T/C8‐ITIC‐based cells exhibiting a small energy loss of 0.6 eV combined with a high JSC of 19.6 mA cm−2.
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Citations
Cites
Recent progress in non-fullerene small molecule acceptors in organic solar cells (OSCs)
Chen, W., & Zhang, Q. (2017) · Journal of Materials Chemistry C · doi:10.1039/c6tc05066b · Cited by 407
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Wan, X., Li, C., Zhang, M., & Chen, Y. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00084a · Cited by 532
Advantages, challenges and molecular design of different material types used in organic solar cells
Yi, J., Zhang, G., Yu, H., & Yan, H. (2023) · Nature Reviews Materials · doi:10.1038/s41578-023-00618-1 · Cited by 522
Enabling low voltage losses and high photocurrent in fullerene-free organic photovoltaics
Yuan, J., Huang, T., Cheng, P., Zou, Y., Zhang, H., Yang, J. L., Chang, S.-Y., Zhang, Z., Huang, W., Wang, R., et al. (2019) · Nature Communications · doi:10.1038/s41467-019-08386-9 · Cited by 481
Optical Gaps of Organic Solar Cells as a Reference for Comparing Voltage Losses
Wang, Y., Qian, D., Cui, Y., Zhang, H., Hou, J., Vandewal, K., Kirchartz, T., & Gao, F. (2018) · Advanced Energy Materials · doi:10.1002/aenm.201801352 · Cited by 448
Metadata
- Authors
- Fei, Z., Eisner, F. D., Jiao, X., Azzouzi, M., Röhr, J. A., Han, Y., Shahid, M., Chesman, A. S. R., Easton, C. D., McNeill, C. R., Anthopoulos, T. D., Nelson, J., & Heeney, M.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-01-09
- Volume
- 30
- Issue
- 8
- Pages
- e1800728-e1800728
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2783974197
- Cited by
- 519
- References
- 1
- FWCI
- 39.33
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Fei, Z., Eisner, F. D., Jiao, X., Azzouzi, M., Röhr, J. A., Han, Y., Shahid, M., Chesman, A. S. R., Easton, C. D., McNeill, C. R., Anthopoulos, T. D., Nelson, J., & Heeney, M. (2018). An Alkylated Indacenodithieno[3,2‐b]thiophene‐Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses. Advanced Materials. https://doi.org/10.1002/adma.201705209
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