The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.
Small-Bandgap Semiconducting Polymers with High Near-Infrared Photoresponse
Abstract
Lowering the optical bandgap of conjugated polymers while maintaining a high efficiency for photoinduced charge transfer to suitable electron acceptors such as fullerene has remained a formidable challenge in the area of organic photovoltaics. Here we present the synthesis and application of a series of ultra-small-bandgap donor-acceptor polymers composed of diketopyrrolopyrrole as acceptor and pyrrole-based groups as strong donors. The HOMO energy levels of the polymers can be progressively increased by increasing the donor strength while the LUMO level remains similar, resulting in optical bandgaps between 1.34 and 1.13 eV. Solar cells based on these polymers blended with fullerene derivatives show a high photoresponse in the near-infrared (NIR) and good photovoltaic characteristics, with power conversion efficiencies of 2.9-5.3%. The photoresponse reaches up to 50% external quantum efficiency at 1000 nm and extends to 1200 nm. With the use of a retro-reflective foil to optimize light absorption, high photocurrents up to 23.0 mA cm(-2) are achieved under standard solar illumination conditions. These ultra-small-bandgap polymers are excellent candidates for use in multi-junction applications and NIR organic photodetectors.
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Cites
Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure
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A polymer tandem solar cell with 10.6% power conversion efficiency
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Self-citationPoly(diketopyrrolopyrrole−terthiophene) for Ambipolar Logic and Photovoltaics
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Cited by
Gao, K., Li, L., Lai, T., Xiao, L., Huang, Y., Huang, F., Peng, J., Cao, Y., Liu, F., Russell, T. P., et al. (2015) · Journal of the American Chemical Society · doi:10.1021/jacs.5b03740 · Cited by 455
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Metadata
- Authors
- Hendriks, K. H., Li, W., Wienk, M. M., & Janssen, R. A. J.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-08-14
- Volume
- 136
- Issue
- 34
- Pages
- 12130-12136
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2169065164
- Cited by
- 287
- References
- 33
- FWCI
- 20.87
- Type
- journal article
- Language
- en
- Open access
- closed
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