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Single‐Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor
Abstract
The ternary strategy has been widely identified as an effective approach to obtain high‐efficiency organic solar cells (OSCs). However, for most ternary OSCs, the nonradiative voltage loss lies between those of the two binary devices, which limits further efficiency improvements. Herein, an asymmetric guest acceptor BTP‐2F2Cl is designed and incorporated into a PM1:L8‐BO host blend. Compared with the L8‐BO neat film, the L8‐BO:BTP‐2F2Cl blend film shows higher photoluminescence quantum yield and larger exciton diffusion length. Introducing BTP‐2F2Cl into the host blend extends its absorption spectrum, improves the molecular packing of host materials, and suppresses the nonradiative charge recombination of the ternary OSCs. Consequently, the power conversion efficiency is improved up to 19.17% (certified value 18.7%), which represents the highest efficiency value reported for single‐junction OSCs so far. The results show that improving the exciton behaviors is a promising approach to reducing the nonradiative voltage loss and realizing high‐performance OSCs.
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Cited by
Renewed Prospects for Organic Photovoltaics
Zhang, G., Lin, F. R., Qi, F., Heumüller, T., Distler, A., Egelhaaf, H.-J., Li, N., Chow, P. C. Y., Brabec, C. J., Jen, A. K.-Y., et al. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00955 · Cited by 1,052
Guan, S., Li, Y., Xu, C., Yin, N., Xu, C., Wang, C., Wang, M., Xu, Y., Chen, Q., Wang, D., et al. (2024) · Advanced Materials · doi:10.1002/adma.202400342 · Cited by 650
Sun, S., Zha, W., Tian, C., Wei, Z., Luo, Q., Ma, C., Liu, W., & Zhu, X. (2023) · Advanced Materials · doi:10.1002/adma.202305092 · Cited by 67
Metadata
- Authors
- Sun, R., Wu, Y., Yang, X., Gao, Y., Chen, Z., Li, K., Qiao, J., Wang, T., Guo, J., Liu, C., Hao, X., Zhu, H., & Min, J.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2022-05-20
- Volume
- 34
- Issue
- 26
- Pages
- e2110147-e2110147
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W4224216567
- Cited by
- 621
- References
- 0
- FWCI
- 39.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sun, R., Wu, Y., Yang, X., Gao, Y., Chen, Z., Li, K., Qiao, J., Wang, T., Guo, J., Liu, C., Hao, X., Zhu, H., & Min, J. (2022). Single‐Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor. Advanced Materials. https://doi.org/10.1002/adma.202110147
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