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Strong exciton binding in quantum structures through remote dielectric confinement

G. Goldoni·F. Rossi·E. Molinari
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Abstract

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. Due to the polarization charges induced by the dielectric mismatch at the semiconductor/insulator interfaces, we show that the exciton binding energy can be more than doubled. For conventional III-V quantum wires such remote dielectric confinement allows exciton binding at room temperature.

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G. Goldoni, F. Rossi, E. Molinari. 1998-04-03. Strong exciton binding in quantum structures through remote dielectric confinement. https://doi.org/10.1103/physrevlett.80.4995

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