Ambipolar tunneling in near-surface quantum wells
arXiv:cond-mat/9709014 · doi:10.1006/spmi.1996.0043
Abstract
We study the photoluminescence from a near-surface quantum well in the regime of ambipolar tunneling to the surface states. Under steady-state excitation an electric field develops self-consistently due to the condition of equal tunneling currents for electrons and holes. The field induces a Stark shift of the photoluminescence signal which compares well with experimental data from near-surface GaAs/AlGaAs single quantum wells.
8 pages, REVTeX 3.0