May 26, 2015 - that reduces the double-sided reflection from a borosilicate glass slide from ..... the surface of a smart phone screen (Apple iPhone 4) and.
Letter pubs.acs.org/NanoLett
Single-Step Soft-Imprinted Large-Area Nanopatterned Antireflection Coating Jorik van de Groep,† Pierpaolo Spinelli,†,‡ and Albert Polman*,† †
Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands Energy Research Center of The Netherlands ECN, Westerduinweg 3, 1755 LE Petten, The Netherlands
‡
S Supporting Information *
ABSTRACT: We demonstrate an effective nanopatterned antireflection coating on glass that is based on sol−gel chemistry and large-area substrate-conformal soft-imprint technology. The printed 120 nm tall silica nanocylinders with a diameter of 245 nm in a square array with 325 nm pitch form an effective-index (n = 1.20) antireflection coating that reduces the double-sided reflection from a borosilicate glass slide from 7.35% to 0.57% (averaged over the visible spectral range) with a minimum reflectance
