Effects of electron correlation on the photocurrent in quantum dot infrared photodetectors

Abstract

The effect of electron correlation on the photocurrent of self-assembled InAs/InGaAs quantum dot infrared photo-detector (QDIPs) is studied. It is found that Coulomb interaction and level mixing in the many-body open system lead to double peaks associated with the intra-band transitions involving two lowest levels of the quantum dot. Furthermore, the photocurrent is a nonlinear function of the steady-state carrier density and it displays a plateau due to Coulomb blockade.

7 pages, 3 figures

References in corpus (1)

• Eight-band calculations of strained InAs/GaAs quantum dots compared with one, four, and six-band approximations

Cited by in corpus (2)

• Tunnelling current and emission spectrum of a single electron transistor under optical pumping
• Fano interference effect on the transition spectrum of single electron transistors