Figure 2From: Design of dual-diameter nanoholes for efficient solar-light harvestingSNHs lattice constant, opening ratio optimization, and absorption spectra. (a) The ultimate efficiency of SNHs as a function of lattice constant a and hole opening ratio d/a. (b) Absorption spectra of SNHs I (a = 600 nm, d/a = 1) and SNHs II (a = 600 nm, d/a = 0.5). The thin film absorption spectrum is inserted as a reference.Back to article page