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Exciton Diffusion in Conjugated Polymers: From Fundamental Understanding to Improvement in Photovoltaic Conversion Efficiency
Open accessAbstract
Singlet exciton diffusion plays a central role in the photovoltaic conversion in organic photovoltaics (OPVs). Upon light absorption, singlet excitons are promptly generated in organic materials instead of charge carriers because the dielectric constant (εr) is small (∼3-4), which is in sharp contrast to inorganic and perovskite solar cells. In order to convert to charge carriers, excitons need to diffuse into an interface between electron donor and acceptor materials before deactivating to the ground state. Therefore, fundamental understanding of exciton diffusion dynamics is one of the most important issues to further improve OPVs. We highlight recent leading studies in this field and describe several approaches for efficient exciton harvesting at the interface in OPVs.
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Markov, D. E., Amsterdam, E., Blom, P. W. M., Sieval, A. B., & Hummelen, J. C. (2005) · The Journal of Physical Chemistry A · doi:10.1021/jp0509663 · Cited by 432
Li, W., Hendriks, K. H., Furlan, A., Roelofs, W. S. C., Wienk, M. M., & Janssen, R. A. J. (2013) · Journal of the American Chemical Society · doi:10.1021/ja4101003 · Cited by 318
Cited by
Wadsworth, A., Moser, M., Marks, A., Little, M. S., Gasparini, N., Brabec, C. J., Baran, D., & McCulloch, I. (2019) · Chemical Society Reviews · doi:10.1039/c7cs00892a · Cited by 986
The role of chemical design in the performance of organic semiconductors
Bronstein, H., Nielsen, C. B., Schroeder, B. C., & McCulloch, I. (2020) · Nature Reviews Chemistry · doi:10.1038/s41570-019-0152-9 · Cited by 759
Small is Powerful: Recent Progress in Solution‐Processed Small Molecule Solar Cells
Collins, S. D., Ran, N. A., Heiber, M. C., & Nguyen, T. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201602242 · Cited by 414
Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth
Jin, X.-H., Price, M. B., Finnegan, J. R., Boott, C. E., Richter, J. M., Rao, A., Menke, S. M., Friend, R. H., Whittell, G. R., & Manners, I. (2018) · Science · doi:10.1126/science.aar8104 · Cited by 394
Resolving ultrafast exciton migration in organic solids at the nanoscale
Penwell, S. B., Ginsberg, L. D. S., Noriega, R., & Ginsberg, N. S. (2017) · Nature Materials · doi:10.1038/nmat4975 · Cited by 52
Metadata
- Authors
- Tamai, Y., Ohkita, H., Benten, H., & Ito, S.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-08-18
- Volume
- 6
- Issue
- 17
- Pages
- 3417-3428
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2252497896
- Cited by
- 321
- References
- 2
- FWCI
- 15.88
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Tamai, Y., Ohkita, H., Benten, H., & Ito, S. (2015). Exciton Diffusion in Conjugated Polymers: From Fundamental Understanding to Improvement in Photovoltaic Conversion Efficiency. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/acs.jpclett.5b01147
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