4.8 Article

Interplay of Solvent Additive Concentration and Active Layer Thickness on the Performance of Small Molecule Solar Cells

Journal

ADVANCED MATERIALS
Volume 26, Issue 43, Pages 7308-7316

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201402403

Keywords

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Funding

  1. Office of Naval Research [N000141410076]
  2. U.S. Department of Energy, Office of Science, Basic Energy Science, Division of Materials Science and Engineering [DE-FG02-98ER45737]
  3. Japan Society for the Promotion of Science
  4. Institute for Collaborative Biotechnologies from the U.S. Army Research Office [W911NF-09-0001]

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A relationship between solvent additive concentration and active layer thickness in small-molecule solar cells is investigated. Specifically, the additive concentration must scale with the amount of semiconductor material and not as absolute concentration in solution. Devices with a wide range of active layers with thickness up to 200 nm can readily achieve efficiencies close to 6% when the right concentration of additive is used.

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