Why are Si and GaAs are preferred materials for solar cells?

Why are Si and GaAs are perferred materials for solar cells?

Why are Si and GaAs preferred materials for solar cells ?

A solar cell

Why are Si and Ga As preffered materials for solar cells?

What solar cell? Why are Si and Ga-As perferred materials for solar cell? Give it V-I characteristics.

Why si and gaas are preferred material for solar cells

What is solar cell why are Si and Ga as preferred materials for solar cell give its V-I characteristics ]