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

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

2002-10-16

arxiv.org/abs/cond-mat/0210351v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures

Scientific paper

10.1063/1.1588376

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.

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