DOI: 10.1063/1.115797. Exciton diffusion and dissociation in a poly(<i>p</i>-phenylenevinylene)/C60 heterojunction photovoltaic cell

Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell

10.1063/1.115797

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

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.

Bibliography

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, 68(22), 3120â3122.

Authors 5

J. J. M. Halls (first)
K. Pichler (additional)
R. H. Friend (additional)
S. C. Moratti (additional)
A. B. Holmes (additional)

References 25 Referenced 735

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:40 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 5:55 a.m.)
Indexed	3 weeks, 1 day ago (Aug. 3, 2025, 12:20 a.m.)
Issued	29 years, 2 months ago (May 27, 1996)
Published	29 years, 2 months ago (May 27, 1996)
Published Print	29 years, 2 months ago (May 27, 1996)

Funders 0

None

BibTeX

@article{Halls_1996, title={Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell}, volume={68}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.115797}, DOI={10.1063/1.115797}, number={22}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Halls, J. J. M. and Pichler, K. and Friend, R. H. and Moratti, S. C. and Holmes, A. B.}, year={1996}, month=may, pages={3120–3122} }

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