Deciding Periods for Solar Cell
I'm trying to simulate a solar cell using both FDTD and CHARGE, and I am confused about how to decide how many periods to simulate, and also what exactly constitutes a "period". For example, in the Si Solar Cell w/ TiO2 Pyramid Array example, there are 12 periods, but the x-span of the FDTD simulation is 0.75 um but the x-span of the CHARGE simulation is 10.1 um (which amounts to 13.466... FDTD periods in a single CHARGE period). Plus the solar generation object has an x span of 25 um. So I am quite confused.