Figure 5

Averaged absorption, η _ave, of our hot-carrier solar cell based on the combined structure of capped nanowires with top nanocones for both p-polarization (solid curves) and s-polarization (dotted curves) as a function of (a) the top Au film thickness, t _top, with s = 10 nm, h = 1 μm, r = 1 μm, and p = 400 nm; (c) the circle radius to form the nanocones, r, for different period, p, with s = 10 nm, h = 1 μm, and t _top = 70 nm; (e) the nanoslot height, h, for different nanoslot widths, s, with r = 1 μm, p = 400 nm, and t _top = 70 nm. Some representative absorption spectra in the top Au film, η _top, for both p-polarization (solid curves) and s-polarization (dotted curves) are plotted in Fig. 5(b,d,f) corresponding to η _ave in Fig. 5(a,c,e), respectively. In Fig. 5(b,d,f), the solar spectral intensity is shown in all the four panels in light blue areas characterized by the right axes.