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Keywords:

  • light-trapping nanostructures;
  • organic thin-film solar cells;
  • elastomeric stamps;
  • absorption enhancement;
  • dielectric nanopillars
Thumbnail image of graphical abstract

An elastomeric poly(dimethylsiloxane) (PDMS) block engraved with periodically arrayed nanopillars serves as a transferable light-trapping stamp for encapsulated organic thin-film solar cells. Diffracted light rays from the stamp interfere with one another and self-focus onto the active layer of the solar cell, generating enhanced absorption, as indicated in the current density–voltage measurements.