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Nano Research 2014, 7(5): 670-678 https://doi.org/10.1007/s12274-014-0427-x
Research Article | Issue | Published: 14 May 2014

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

Show Author's Information Hyo Jin Gwon1,2,  Yensil Park3,  Cheon Woo Moon4,  Sahn Nahm2,  Seok-Jin Yoon1,  Soo Young Kim3( ),  Ho Won Jang4( )
Electronic Materials Research CenterKorea Institute of Science and TechnologySeoul136-791Korea
Department of Materials Science and Engineering, Korea UniversityKorea UniversitySeoul136-791Korea
School of Chemical Engineering and Materials ScienceChung-Ang UniversitySeoul156-756Korea
Department of Materials Science and EngineeringResearch Institute of Advanced MaterialsSeoul National UniversitySeoul151-744Korea
Keywords:
superhydrophobic, solar cells, antireflective, self-cleaning, nanograss, glancing angle deposition
Cite this article:
Gwon HJ, Park Y, Moon CW, et al. Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells. Nano Research, 2014, 7(5): 670-678. https://doi.org/10.1007/s12274-014-0427-x
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Abstract Full text Electronic supplementary material About this article

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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About this article

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

Show Author's information Hyo Jin Gwon1,2, Yensil Park3, Cheon Woo Moon4, Sahn Nahm2, Seok-Jin Yoon1, Soo Young Kim3( ), Ho Won Jang4( )
Electronic Materials Research CenterKorea Institute of Science and TechnologySeoul136-791Korea
Department of Materials Science and Engineering, Korea UniversityKorea UniversitySeoul136-791Korea
School of Chemical Engineering and Materials ScienceChung-Ang UniversitySeoul156-756Korea
Department of Materials Science and EngineeringResearch Institute of Advanced MaterialsSeoul National UniversitySeoul151-744Korea

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.

Keywords: superhydrophobic, solar cells, antireflective, self-cleaning, nanograss, glancing angle deposition

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Video
nr-7-5-670_ESM_Movie 1_Normal glass.avi
nr-7-5-670_ESM_Movie 1_SNGC glass.avi
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nr-7-5-670_ESM.pdf (955.6 KB)
Publication history
Copyright
Acknowledgements

Publication history

Received: 21 October 2013
Revised: 28 January 2014
Accepted: 03 February 2014
Published: 14 May 2014
Issue date: May 2014

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2014

Acknowledgements

Acknowledgements

This work was supported by the Korea Institute of Science and Technology. H. W. J. acknowledges the financial support of the Fusion Research Program for Green Technologies and the Outstanding Young Researcher Program through the National Research Foundation of Korea Grant, the Center for Integrated Smart Sensors funded by the Ministry of Science, ICT & Future Planning as the Global Frontier Project.

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