Strong exciton binding in quantum structures through remote dielectric confinement

We propose-a new type of hybrid systems formed by conventional semiconductor nanostructures with the addition of remote insulating layers,where the electron-hole interaction is enhanced by combining quantum and dielectric confinement over different length scales. Because of the polarization charges induced by the dielectric mismatch at the semicondcutor/insulator interfaces, we show that the exciton binding energy can be more than doubled. For conventional m-V quantum wires such remote dielectric confinement allows exciton binding at room temperature.