Mention a few important criteria for the selectrion of a material for the fabrication of solar cells.

Explanation

i. Incident energy of photon should be from (1.0eV to 1.8 eV) depending on the materials selected.
ii. The material should readily emit photoelectrons which depends on high optical absorption `(10^(4) cm^(-1))`
iii. Electrical conductivity of holes and electrons.
iv Avilability of raw materials and their cost.