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Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells

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Abstract

We present a facile method for producing superhydrophobic nanograss-coated (SNGC) glass surfaces that possess both reduced reflectivity and self-cleaning properties at the air/glass interface. The refractive index of a CaF2 nanograss (NG) layer on a glass substrate, deposited by glancing angle vapor deposition, is 1.04 at 500 nm, which is the second-lowest value ever reported so far. The fluorinated NG layer gives rise to a high water contact angle (>150°) and very efficient cleaning out of dust with water drops. Using the dual functionalities of the SNGC glass, we demonstrate superhydrophobic and antireflective organic photovoltaic cells with excellent power conversion efficiency.

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Author information

Authors and Affiliations

  1. Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul, 136-791, Korea

    Hyo Jin Gwon & Seok-Jin Yoon

  2. Department of Materials Science and Engineering, Korea University, Seoul, 136-701, Korea

    Hyo Jin Gwon & Sahn Nahm

  3. School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul, 156-756, Korea

    Yensil Park & Soo Young Kim

  4. Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 151-744, Korea

    Cheon Woo Moon & Ho Won Jang

Authors
  1. Hyo Jin Gwon
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  2. Yensil Park
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  3. Cheon Woo Moon
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  4. Sahn Nahm
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  5. Seok-Jin Yoon
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Correspondence to Soo Young Kim or Ho Won Jang.

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Gwon, H.J., Park, Y., Moon, C.W. et al. Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells. Nano Res. 7, 670–678 (2014). https://doi.org/10.1007/s12274-014-0427-x

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  • DOI: https://doi.org/10.1007/s12274-014-0427-x

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