AIIMS 2018 Physics Solar Cells MCQ Question

In a solar cell, current is generated primarily in the depletion region, where the electric field created by the junction of the p-type and n-type semiconductors separates electron-hole pairs generated by photon absorption. This bond breakage occurs when photons with energy greater than the bandgap energy excite electrons, allowing them to move freely and contribute to the current. The n-region and p-region themselves do not generate current directly; rather, they serve to create the electric field necessary for charge separation. Thus, the depletion region is crucial for the operation of solar cells.