Article Title

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

Authors

Hyo Jin Gwon, Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
Yensil Park, School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 156-756, Korea
Cheon Woo Moon, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Korea
Sahn Nahm, Department of Materials Science and Engineering, Korea University, Seoul 136-701, Korea
Seok-Jin Yoon, Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
Soo Young Kim, School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 156-756, Korea
Ho Won Jang, 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

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.

Graphical Abstract

DOI

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

Publisher

Tsinghua University Press

Recommended Citation

Hyo Jin Gwon,Yensil Park,Cheon Woo Moon,Sahn Nahm,Seok-Jin Yoon,Soo Young Kim,Ho Won Jang, Superhydrophobic and antireflective nanograss-coated glass for high performance solar cells. NanoRes.2014, 7(5): 670–678