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Thieno[3,2-b]pyrrolo-Fused Pentacyclic Benzotriazole-Based Acceptor for Efficient Organic Photovoltaics
Abstract
A novel nonfullerene small molecular acceptor (BZIC) based on a ladder-type thieno[3,2-b]pyrrolo-fused pentacyclic benzotriazole core (dithieno[3,2-b]pyrrolobenzotriazole, BZTP) and end-capped with 1,1-dicyanomethylene-3-indanone (INCN) has been first reported in this work. Through introducing multifused benzotriazole and INCN, BZIC could maintain a high-lying lowest unoccupied molecular orbital (LUMO) energy level of -3.88 eV. Moreover, BZIC shows a low optical bandgap of 1.45 eV with broad and efficient absorption band from 600 to 850 nm due to increased π-π interactions by the covalently locking thiophene and benzotriazole units. A power conversion efficiency of 6.30% is delivered using BZIC as nonfullerene acceptor and our recently synthesized hexafluoroquinoxaline-based polymer HFQx-T as donor. This is the first time to synthesize mutifused benzotriazole-based molecules as nonfullerene electron acceptor up to date. The preliminary results demonstrate that the mutifused benzotriazole derivatives hold great potential for efficient photovoltaics.
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Solution-processed organic tandem solar cells with power conversion efficiencies >12%
Li, M., Gao, K., Wan, X., Zhang, Q., Kan, B., Xia, R., Liu, F., Yang, X., Feng, H., Ni, W., et al. (2017) · Nature Photonics · doi:10.1038/nphoton.2016.240 · Cited by 548
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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
Metadata
- Authors
- Feng, L., Yuan, J., Zhang, Z., Peng, H., Zhang, Z.-G., Xu, S., Liu, Y., Li, Y., & Zou, Y.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-09-05
- Volume
- 9
- Issue
- 37
- Pages
- 31985-31992
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2749600407
- Cited by
- 209
- References
- 1
- FWCI
- 5.26
- Type
- journal article
- Language
- en
- Open access
- closed
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- Feng, L., Yuan, J., Zhang, Z., Peng, H., Zhang, Z.-G., Xu, S., Liu, Y., Li, Y., & Zou, Y. (2017). Thieno[3,2-b]pyrrolo-Fused Pentacyclic Benzotriazole-Based Acceptor for Efficient Organic Photovoltaics. ACS Applied Materials & Interfaces. https://doi.org/10.1021/acsami.7b10995
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