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Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions
Open accessAbstract
The carrier collection efficiency (η c ) and energy conversion efficiency (η e ) of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C 60 or its functionalized derivatives. Composite films of poly(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH-PPV) and fullerenes exhibit η c of about 29 percent of electrons per photon and η e of about 2.9 percent, efficiencies that are better by more than two orders of magnitude than those that have been achieved with devices made with pure MEH-PPV. The efficient charge separation results from photoinduced electron transfer from the MEH-PPV (as donor) to C 60 (as acceptor); the high collection efficiency results from a bicontinuous network of internal donor-acceptor heterojunctions.
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Metadata
- Authors
- Yu, G., Gao, J., Hummelen, J. C., Wudl, F., & Heeger, A. J.
- Venue
- Science
- Published
- 1995-12-15
- Volume
- 270
- Issue
- 5243
- Pages
- 1789-1791
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2071134066
- Cited by
- 10,348
- References
- 0
- FWCI
- 31.62
- Type
- journal article
- Language
- en
- Open access
- green
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