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Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell
Abstract
We report measurements of the photovoltaic response of two-layer photocells formed with layers of the conjugated polymer poly(phenylenevinylene), PPV and fullerene, C60, formed between indium-tin oxide and aluminum electrodes. Peak quantum efficiencies of up to ∼9% (electrons collected per incident photon) were measured under short-circuit conditions. We model the photovoltaic response as arising from excitons photogenerated in the PPV layer which are able to diffuse to the interface with the C60 layer where they are ionized. We obtain a value for the exciton diffusion range of 7±1 nm, both from the spectral response and from the absolute efficiency. We demonstrate that the branching ratio for the creation of singlet excitons from absorbed photons is close to unity.
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Cited by
Modeling photocurrent action spectra of photovoltaic devices based on organic thin films
Pettersson, L. A. A., Roman, L. S., & Inganäs, O. (1999) · Journal of Applied Physics · doi:10.1063/1.370757 · Cited by 1,642
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
Dang, M. T., Hirsch, L., Wantz, G., & Wuest, J. D. (2013) · Chemical Reviews · doi:10.1021/cr300005u · Cited by 587
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
Metadata
- Authors
- Halls, J. J. M., Pichler, K., Friend, R. H., Moratti, S. C., & Holmes, A. B.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 1996-05-27
- Volume
- 68
- Issue
- 22
- Pages
- 3120-3122
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2025120535
- Cited by
- 800
- References
- 0
- FWCI
- 21.36
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell. https://app.cochat.ai/papers/10.1063/1.115797
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- Halls, J. J. M., Pichler, K., Friend, R. H., Moratti, S. C., & Holmes, A. B. (1996). Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell. Applied Physics Letters. https://doi.org/10.1063/1.115797
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