Its rules dictate that either the entire energy of the photon is absorbed by one of the electrons, or the energy is distributed between them. (sciencedaily.com)
By first converting the sunlight to heat and then back into light, the device fine - tunes the energy of photons absorbed by the photovoltaic cell, maximizing the electricity - generating potential. (scientificamerican.com)
As we increase the energy of the photons, they kick the electrons off the atoms and interact with the neighboring elements.» (sciencedaily.com)