Hexagonal sinusoidal nanotextured silica-silicon interfaces are studied in numerical simulations. A comparison with experimental data reveals that higher-order corrections can predict the measured reflectivity of the samples much better than an often-applied zeroth-order correction.
K. Jäger, et al. On accurate simulations of thin-film solar cells with a thick glass superstrate. Opt. Express 26, A99 (2018).