Name any two elements that are used in fabricating solar cells.

(N/A) The two elements commonly used in the fabrication of solar cells are:
$(i)$ Silicon $(Si)$: It is the primary semiconductor material used to form the $p-n$ junction in photovoltaic cells.
$(ii)$ Silver $(Ag)$: It is used to create the electrical contact grids on the surface of the solar cell to collect the generated current.