4.8 Article

Manipulating Aggregation and Molecular Orientation in All-Polymer Photovoltaic Cells

Journal

ADVANCED MATERIALS
Volume 27, Issue 39, Pages 6046-6054

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201503218

Keywords

2D-conjugated polymers; anisotropy; interfaces; molecular orientation; polymer solar cells

Funding

  1. National Basic Research Program 973 [2014CB643501]
  2. NSFC [91333204, 51261160496]
  3. Chinese Academy of Sciences [XDB12030200]
  4. US Department of Energy, Office of Science, Basic Energy Science, Division of Materials Science and Engineering [DE-FG02-98ER45737]
  5. Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH11231]
  6. CAS-Croucher Funding Scheme for Joint Labs

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Manipulating molecular orientation at the donor/acceptor interface is the key to boosting charge separation properties and efficiencies of anisotropic-materials-based organic photovoltaics (OPVs). By replacing the polymeric donor PBDTBDD with its 2D-conjugated polymer PBDTBDD-T, the power conversion efficiency of OPVs featuring the anisotropic polymer acceptor PNDI is drastically boosted from 2.4% up to 5.8%.

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