Before revision: Types Two types of quantum efficiency of a solar cell are often considered: External Quantum Efficiency (EQE) is the ratio of the number of charge carriers collected by the solar cell to the number of photons of a given energy shining on the solar cell from outside (incident photons).
After revision: Types Two types of quantum efficiency of a solar cell are often considered: External quantum efficiency (EQE) is the ratio of the number of charge carriers collected by the solar cell to the number of photons of a given energy shining on the solar cell from outside (incident photons).