TUNNELING LIFETIME BROADENING ON QUANTUM-WELL IN AN ELECTRIC-FIELD

The effect of an electric field on the electron energy and resonant wi dth in a quantum well have been investigated theoretically. By conside ring the tunneling of electrons under the influence of an electric fie ld in the quantum well, we obtain a shifted and broadened energy level spectrum from the tunneling of electrons. The lifetime broadening due to the rapid tunneling escape of electrons is related to the energy w idth of the resonant level by the uncertainty principle. Such lifetime decreases when the electric field increases.