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The photovoltaic response in poly(p-phenylene vinylene) thin-film devices
Abstract
We report measurements of the photovoltaic effect in diode structures formed with thin films (100 nm) of the conjugated polymer poly(p-phenylene vinylene), PPV, sandwiched between electrodes of indium/tin oxide, ITO, and either aluminium, magnesium or calcium. Under illumination incident through the ITO contact, large open-circuit voltages were measured, which saturated at approximately 1.2 V for Al and Mg devices, and approximately 1.7 V for Ca devices. Quantum efficiencies (short-circuit current/incident photon flux) of order 1% were measured at low intensities (0.1 mW cm -2 ). The spectral response of the photocurrent demonstrates that photon absorption near the electron-collecting electrode optimizes the photocurrent, indicating that device performance is limited by low electron mobilities in the bulk PPV. The photocurrent exhibits a weak temperature dependence, with an activation energy that is a function of the electric field in the polymer. We have used these measurements to estimate an exciton binding energy in PPV of approximately 0.4 eV.
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Cites
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
O'Regan, B., & Grätzel, M. (1991) · Nature · doi:10.1038/353737a0 · Cited by 28,599
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Efficient photodiodes from interpenetrating polymer networks
Halls, J. J. M., Walsh, C. A., Greenham, N. C., Marseglia, E. A., Friend, R. H., Moratti, S. C., & Holmes, A. B. (1995) · Nature · doi:10.1038/376498a0 · Cited by 3,258
Self-citationDevice Physics of Polymer:Fullerene Bulk Heterojunction Solar Cells
Blom, P. W. M., Mihailetchi, V. D., Koster, L. J. A., & Markov, D. E. (2007) · Advanced Materials · doi:10.1002/adma.200601093 · Cited by 2,299
Dang, M. T., Hirsch, L., Wantz, G., & Wuest, J. D. (2013) · Chemical Reviews · doi:10.1021/cr300005u · Cited by 587
Shuai, Z., & Peng, Q. (2014) · Physics Reports · doi:10.1016/j.physrep.2013.12.002 · Cited by 477
How to model the behaviour of organic photovoltaic cells
Moliton, A., & Nunzi, J. (2006) · Polymer International · doi:10.1002/pi.2038 · Cited by 403
Metadata
- Authors
- Marks, R. N., Halls, J. J. M., Bradley, D. D. C., Friend, R. H., & Holmes, A. B.
- Venue
- Journal of Physics: Condensed Matter
- Publisher
- IOP Publishing
- Published
- 1994-02-14
- Volume
- 6
- Issue
- 7
- Pages
- 1379-1394
- ISSN
- 0953-8984 (ISSN-L)
- 1361-648X
- OpenAlex
- W2163226755
- Cited by
- 366
- References
- 1
- FWCI
- 27.82
- Type
- journal article
- Language
- en
- Open access
- closed
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- Marks, R. N., Halls, J. J. M., Bradley, D. D. C., Friend, R. H., & Holmes, A. B. (1994). The photovoltaic response in poly(p-phenylene vinylene) thin-film devices. Journal of Physics: Condensed Matter. https://doi.org/10.1088/0953-8984/6/7/009
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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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