Research Article

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2014, 7(5): 670–678

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

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

Hyo Jin Gwon1,2, Yensil Park3, Cheon Woo Moon4, Sahn Nahm2, Seok-Jin Yoon1, Soo Young Kim3 (*), and Ho Won Jang4 (*)

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1 Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
2 Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
3 School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 156-756, Korea
4 Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Korea

Keywords: superhydrophobic, antireflective, self-cleaning, nanograss, solar cells, glancing angle deposition
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  • Abstract
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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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Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells. Nano Res. 2014, 7(5): 670–678 https://doi.org/10.1007/s12274-014-0427-x

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