Confinement in a Double Barrier Structure in the Presence of an Electric Field

TL;DR

This paper investigates how electric fields influence electron tunneling in double barrier structures, revealing effects like increased tunneling time, Stark-ladder localization, Bloch oscillations, and luminescence quenching.

Contribution

It provides a detailed analysis of electric field effects on resonant tunneling, connecting phenomena like Stark-ladder localization and Bloch oscillations in superlattices.

Findings

Electric field increases tunneling time at specific strengths.

Electric field induces Stark-ladder localization and Bloch oscillations.

Electric field causes quenching of luminescence in quantum wells.

Abstract

The effect of electric field on the electron resonant tunnelling into a double barrier structure is studied. We show for particular field strengths an increase of the tunnelling time which leads us to explain the Stark-ladder localization and Bloch oscillations in superlattices and to discuss the quenching of luminescence in multiple quantum wells.