Highly Reflective Dielectric Back Reflector for Improved Efficiency of Tandem Thin-Film Solar Cells

Figure 5

(a) Dispersion relation of SPP modes calculated according to (1). SPP modes propagating along a flat Ag surface covered with ZnO:Al half space as a function of the real part of the wave-vector parallel to the surface (). (b) Maxima in simulated absorption efficiency (max. ) of LSP resonances in hemispherical Ag nanostructures as a function of the resonance wavelength () covered by ZnO:Al. The radius of the hemispherical nanostructure is varied from 10 nm to 150 nm.

(a)

(b)