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. 2014 May 13;4:4939. doi: 10.1038/srep04939

Figure 2. Optical simulations by FDTD.

Figure 2

(a) Integrated light absorption in the Si layers of the plasmonic solar cell designs referenced to the standard solar cells as a function of the wafer thickness. The horizontal dash line shows the integrated absorption for a 180 μm standard wafer cell. (b) Light absorption spectrum in Si for 50 μm wafer cells with the optimized rear Ag NPs, referenced to the standard 180 μm and 50 μm wafer cells. (c) Integrated absorption enhancement at each wafer thickness for the optimized front Al, Ag NPs and the optimized rear Ag NPs, respectively. (d) Light absorption spectrum in Si for the 180 μm wafer cells in the cases of standard structure, front Al NPs and rear Ag NPs. The oscillations in the longer wavelengths are due to the interference effect in the simulation.