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Efficiency of Exciton and Charge Carrier Photogeneration in a Semiconducting Polymer
Open accessAbstract
We determine the efficiencies for the formation of excitons and charge carriers following ultrafast photoexcitation of a semiconducting polymer (MEH-PPV). The simultaneous, quantitative determination of exciton and charge photoyields is achieved through subpicosecond studies of both the real and the imaginary components of the complex conductivity over a wide frequency range. Predominantly excitons, with near-unity quantum efficiency, are generated on excitation, while only a very small fraction (<10(-2)) of free charges are initially excited, consistent with rapid ( approximately 100 fs) hot exciton dissociation. These initial charges are very short lived, decaying on subpicosecond time scales.
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Citations
Cited by
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Jepsen, P. U., Cooke, D. G., & Koch, M. (2011) · Laser & Photonics Reviews · doi:10.1002/lpor.201000011 · Cited by 2,091
Carrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy
Ulbricht, R., Hendry, E., Shan, J., Heinz, T. F., & Bonn, M. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.543 · Cited by 1,293
Self-citationA Review of the Terahertz Conductivity of Bulk and Nano-Materials
Lloyd-Hughes, J., & Jeon, T.-I. (2012) · Journal of Infrared, Millimeter, and Terahertz Waves · doi:10.1007/s10762-012-9905-y · Cited by 503
Baxter, J. B., & Guglietta, G. W. (2011) · Analytical Chemistry · doi:10.1021/ac200907z · Cited by 477
Metadata
- Authors
- Hendry, E., Schins, J. M., Candeias, L. P., Siebbeles, L. D. A., & Bonn, M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-05-13
- Volume
- 92
- Issue
- 19
- Pages
- 196601-196601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2131281352
- Cited by
- 198
- References
- 0
- FWCI
- 12.10
- Type
- journal article
- Language
- en
- Open access
- green
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- Hendry, E., Schins, J. M., Candeias, L. P., Siebbeles, L. D. A., & Bonn, M. (2004). Efficiency of Exciton and Charge Carrier Photogeneration in a Semiconducting Polymer. Physical Review Letters. https://doi.org/10.1103/physrevlett.92.196601
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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