Fig. 2From: Effective Light Absorption Using the Double-sided Pyramid Gratings for Thin-Film Silicon Solar CellSchematic multilayer medium structure of the silicon pyramid gratings, with numbering convention of interfaces (1, …, i, …, N − 1), complex refractive index (N1, …, Ni, …, NN), and electromagnetic radiation fluxes (Qi,a, Qi,b, Qi + 1,c, Qi + 1,d, …)Back to article page