Fig. 2
Maps of the integrated absorption efficiency in the active layer (η I) versus the filling and the height of the arrayed patterns in Device A (a) and Device B (b) when p A (or p B) = 350 nm. At the denoted point A (with f A = 0.1 and h A = 45 nm) and point B (with f B = 0.3 and h B = 65 nm), Device A and Device B, respectively, produce the optimal η I. The dashed curve represents the contour line of the integrated absorption efficiency equal to that of the planar control