Figure 3.

Light-trapping optimization in the 300–1100 nm wavelength range for inverted pyramid c–Si photonic crystals with thickness H and dual-layer ARCs with n₁ = 1.4, t₁ = 45 nm, n₂ = 2.6 and t₂ = 100 nm. Here, a denotes the lattice constant of the photonic crystal. The details of the optimum lattice sizes are summarized in Table 1.