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Soft elastomeric nanopillar stamps for enhancing absorption in organic thin-film solar cells
Jerome K Hyun1, Changui Ahn, Hyunbum Kang
1Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
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.
