Figure 3
From: Simple Rectangular Gratings as a Near-Field “Anti-Reflection” Pattern for GaSb TPV Cells

(a) Comparison of spectral radiative flux q(ω) for GaSb absorber with and without surface gratings (structural parameters shown in figure). (b) Influence of grating period, Λ, with fixed a/Λ = 0.5 and h = 200 nm. (c) Influence of grating filling ratio, with fixed Λ = 200 nm and h = 200 nm. The corresponding EMT results are shown in color-matched dashed lines and the GaSb bandgap ω g is marked.