A two-dimensional electron gas in donor–acceptor doped backward heterostructures

We propose a backward-diode heterostructure modified by a built-in acceptor-doped layer that forms an additional potential barrier decreasing the transverse transport of hot electrons to the substrate. According to calculations, this structure is characterized by (i) an energy difference between dimensional quantization levels that is several times the optical phonon energy in GaAs and (ii) increased linearity of transfer characteristics.