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Recombination‐Limited Photocurrents in Low Bandgap Polymer/Fullerene Solar Cells
Open accessAbstract
The charge transport and photogeneration in solar cells based on the low bandgap‐conjugated polymer, poly[2,6‐(4,4‐bis‐(2‐ethylhexyl)‐4 H‐cyclopenta[2,1‐b; 3,4‐b′]dithiophene)‐alt‐4,7‐(2,1,3‐benzothiadiazole)] (PCPDTBT) and fullerenes is studied. The efficiency of the solar cells is limited by a relatively low fill factor, which contradicts the observed good and balanced charge transport in these blends. Intensity dependent measurements display a recombination limited photocurrent, characterized by a square root dependence on effective applied voltage, a linear dependence on light intensity and a constant saturation voltage. Numerical simulations show that the origin of the recombination limited photocurrent stems from the short lifetime of the bound electron‐hole pairs at the donor/acceptor interface.
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Cited by
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Clarke, T. M., & Durrant, J. R. (2010) · Chemical Reviews · doi:10.1021/cr900271s · Cited by 2,372
He, Z., Zhong, C., Huang, X., Wong, W., Wu, H., Chen, L., Su, S., & Cao, Y. (2011) · Advanced Materials · doi:10.1002/adma.201103006 · Cited by 2,134
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Xu, X., Liu, Z., Zuo, Z., Zhang, M., Zhao, Z., Shen, Y., Zhou, H., Chen, Q., Yang, Y., & Wang, M. (2015) · Nano Letters · doi:10.1021/nl504701y · Cited by 445
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Metadata
- Authors
- Lenes, M., Morana, M., Brabec, C. J., & Blom, P. W. M.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2009-04
- Volume
- 19
- Issue
- 7
- Pages
- 1106-1111
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2041089015
- Cited by
- 394
- References
- 0
- FWCI
- 21.12
- Type
- journal article
- Language
- en
- Open access
- green
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- Lenes, M., Morana, M., Brabec, C. J., & Blom, P. W. M. (2009). Recombination‐Limited Photocurrents in Low Bandgap Polymer/Fullerene Solar Cells. Advanced Functional Materials. https://doi.org/10.1002/adfm.200801514
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