Extra exam question E6F01

WhyElectrons absorb the energy from light falling on a photovoltaic cell. In a photovoltaic cell, it's electrons within the semiconductor material that absorb the energy from incoming light, getting excited across the material's band gap and freed to flow as current, the basic mechanism behind how sunlight becomes electricity, answer C. Protons aren't the charge carriers involved in this process, photons are the particles of light doing the exciting rather than the thing being excited, and holes are a secondary consequence of an electron being freed, not what directly absorbs the light energy.