Soft Elastomeric Nanopillar Stamps for Enhancing Absorption in Organic Thin-Film Solar Cells

Authors

  • Jerome K. Hyun,

    1. Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Changui Ahn,

    1. Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Hyunbum Kang,

    1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Hyeong Jun Kim,

    1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Junyong Park,

    1. Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Ki-Hyun Kim,

    1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Chi Won Ahn,

    1. Nano Fusion Technology Division, National Nanofab Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Bumjoon J. Kim,

    1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
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  • Seokwoo Jeon

    Corresponding author
    1. Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea
    • Department of Materials Science and Engineering, KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305–701, Republic of Korea.
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Abstract

original image

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.

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