The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
Exciton Fission and Charge Generation via Triplet Excitons in Pentacene/C60 Bilayers
Abstract
Organic photovoltaic devices are currently studied due to their potential suitability for flexible and large-area applications, though efficiencies are presently low. Here we study pentacene/C(60) bilayers using transient optical absorption spectroscopy; such structures exhibit anomalously high quantum efficiencies. We show that charge generation primarily occurs 2-10 ns after photoexcitation. This supports a model where charge is generated following the slow diffusion of triplet excitons to the heterojunction. These triplets are shown to be present from early times (<200 fs) and result from the fission of a spin-singlet exciton to form two spin-triplet excitons. These results elucidate exciton and charge generation dynamics in the pentacene/C(60) system and demonstrate that the tuning of the energetic levels of organic molecules to take advantages of singlet fission could lead to greatly enhanced photocurrent in future OPVs.
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Cites
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Singlet fission in pentacene through multi-exciton quantum states
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Exciton Fission and Fusion in Bis(tetracene) Molecules with Different Covalent Linker Structures
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Self-citationInterpretation of the Ultrafast Photoinduced Processes in Pentacene Thin Films
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Cited by
Hestand, N. J., & Spano, F. C. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00581 · Cited by 1,904
Recent Advances in Singlet Fission
Smith, M. B., & Michl, J. (2013) · Annual Review of Physical Chemistry · doi:10.1146/annurev-physchem-040412-110130 · Cited by 1,048
Exciton diffusion in organic semiconductors
Mikhnenko, O. V., Blom, P. W. M., & Nguyen, T.-Q. (2015) · Energy & Environmental Science · doi:10.1039/c5ee00925a · Cited by 997
Light Harvesting for Organic Photovoltaics
Hedley, G. J., Ruseckas, A., & Samuel, I. D. W. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00215 · Cited by 580
The energy barrier in singlet fission can be overcome through coherent coupling and entropic gain
Chan, W.-L., Ligges, M., & Zhu, X.-Y. (2012) · Nature Chemistry · doi:10.1038/nchem.1436 · Cited by 339
Metadata
- Authors
- Rao, A., Wilson, M. W. B., Hodgkiss, J. M., Albert-Seifried, S., Bässler, H., & Friend, R. H.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-08-24
- Volume
- 132
- Issue
- 36
- Pages
- 12698-12703
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2065802377
- Cited by
- 313
- References
- 15
- FWCI
- 18.94
- Type
- journal article
- Language
- en
- Open access
- closed
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