Energy Transitions (IMAGE)
Caption
An electron inside a quantum dot is raised by a photon (green waveform) to a higher energy level. The result is a so-called exciton, an excited state consisting of two electrons and one hole. By emitting a photon (green waveform), the system returns to the ground state (green path). In rare cases, a radiative Auger process takes place (red arrow): an electron stays in the excited state, while a photon of lower energy (red waveform) is emitted.
Credit
RUB, Arne Ludwig
Usage Restrictions
The image may only be used for reporting about the Ruhr-Universität Bochum in the context of the press release "New insights into the energy levels in quantum dots", published in June 2020.
License
Licensed content