Figure 2From: Comparative study of absorption in tilted silicon nanowire arrays for photovoltaicsUltimate efficiency of square arrays of vertical nanowires. The vertical nanowires (β = 0) have height h = 1,000 nm, and the ultimate efficiency is shown as a function of array pitch a and nanowire diameter d. The highest ultimate efficiency is 29.7% at a = 600 nm and d = 560 nm, which is marked with a circle in the contour plot.Back to article page