Explain a typical p-n juction solar cell with a neat labelling

Explanation

Working of a solar cell : When light of suitable wavelength is incident on an open-circuited solar cell, an emf is produced across its terminals. Either p or n is made very thin so that a large light energy is not absorbed by the thin region. The junction area is kept large so that a large amount of solar radiation falls on it. the electrons reaching the n-side are collected by the front contact and holes reaching the p-side are collected by the back contact. thus , p-side becomes positive and inside becomes negetive giving rise to photo voltage.