Fabrication of high-transmittance and low-reflectance meter-scale moth-eye film by roll-printing

Nanotechnology
Sucheol JuHeon Lee

Abstract

Anti-reflection technology is a core technology in the field of optoelectronic devices that is used to increase efficiency by reducing reflectance. In particular, the bio-mimetic moth-eye pattern has the advantage of being independent of wavelength, polarization, and angle of incidence. In this study, we fabricated a 1.1 m wide meter-scale moth-eye film using roll-printing. A uniform pattern with a height of 170 nm was formed, which reduced the reflectance by 3% and increased the transmittance by 3%. Additionally, the moth-eye film coated with a self-assembled monolayer (SAM) exhibited a contact angle of 147°, almost equal to the superhydrophobic angle of 150°. Furthermore, the contact angle, transmittance, and reflectance of the SAM-coated moth-eye film were maintained after the environmental test, which was conducted for 72 h at 60 °C and 80% humidity.

References

Feb 9, 2008·Applied Optics·H G ShanbhogueG K Thutupalli
Feb 26, 2010·Nano Letters·Antonio CheccoBenjamin M Ocko
Nov 15, 2012·Nature Communications·Xianzhong ChenThomas Zentgraf
Feb 24, 2015·Nature Nanotechnology·Guoxing ZhengShuang Zhang
Jun 10, 2017·ACS Applied Materials & Interfaces·Inchan HwangKwanyong Seo
Oct 7, 2017·Science·Mohammadreza Khorasaninejad, Federico Capasso
Jan 31, 2018·Nature Nanotechnology·Shuming WangDin Ping Tsai

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