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Fluorine Substituted Conjugated Polymer of Medium Band Gap Yields 7% Efficiency in Polymer−Fullerene Solar Cells
Abstract
Recent research advances on conjugated polymers for photovoltaic devices have focused on creating low band gap materials, but a suitable band gap is only one of many performance criteria required for a successful conjugated polymer. This work focuses on the design of two medium band gap (~2.0 eV) copolymers for use in photovoltaic cells which are designed to possess a high hole mobility and low highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels. The resulting fluorinated polymer PBnDT-FTAZ exhibits efficiencies above 7% when blended with [6,6]-phenyl C(61)-butyric acid methyl ester in a typical bulk heterojunction, and efficiencies above 6% are still maintained at an active layer thicknesses of 1 μm. PBnDT-FTAZ outperforms poly(3-hexylthiophene), the current medium band gap polymer of choice, and thus is a viable candidate for use in highly efficient tandem cells. PBnDT-FTAZ also highlights other performance criteria which contribute to high photovoltaic efficiency, besides a low band gap.
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Coffin, R. C., Peet, J., Rogers, J., & Bazan, G. C. (2009) · Nature Chemistry · doi:10.1038/nchem.403 · Cited by 597
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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
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Metadata
- Authors
- Price, S. C., Stuart, A. C., Yang, L., Zhou, H., & You, W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-03-04
- Volume
- 133
- Issue
- 12
- Pages
- 4625-4631
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2011678172
- Cited by
- 1,505
- References
- 1
- FWCI
- 148.85
- Type
- journal article
- Language
- en
- Open access
- closed
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- Price, S. C., Stuart, A. C., Yang, L., Zhou, H., & You, W. (2011). Fluorine Substituted Conjugated Polymer of Medium Band Gap Yields 7% Efficiency in Polymer−Fullerene Solar Cells. Journal of the American Chemical Society. https://doi.org/10.1021/ja1112595
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