Question

Explain briefly the three process due to which generation of emf takes place in a solar cell

Answer 1

(i) When light falls at the junction, electron-hole pairs are generated. (ii) The electron and hole move in opposite direction due to junction field. Electrons move towards n-side and holes move towards p-side of the junction. (iii) The two sides of the junction become oppositely charged and a potential difference is developed across the junction