Exciton binding energy in a double quantum well: effect of the barrier shift

Electronic coupling in MgxZn1−xO/ZnO double quantum wells

“…Qualitatively it is known that the exciton binding energy decreases for an asymmetric case relative to a DQW with equal well widths. 13 Further investigations are necessary to ascertain the exact origin of the maximum B3, obtained from the measurement.…”

Exciton-related energies of the 1s-like states of excitons in GaAs-Ga1−xAlxAs double quantum wells

“…In the same direction, Arapan and Liberman [20] have calculated the exciton levels, the binding energies of direct and indirect excitons, and the optical absorption in coupled double quantum well structures under the effect of applied electric field, taking into account the coupling between different subband pairs. Furthermore, with the use of a variational procedure, the effects of the central barrier shift on the exciton binding energy in a double quantum well have been considered by Ryczko and co-workers [21]. They observed that this shift induces significant changes in the exciton binding energy-even several meVs in the case of very thin barriers.…”

Exciton binding energy in coupled double zinc blende GaN/InGaN quantum well

“…Exciton states in coupled double quantum wells have been reported , as well as direct and indirect excitons by external factors and different system parameters have been reported , there are also some experimental results and papers reporting optical properties . Finally, there are some other studies of the effect of the central barrier on the excitonic spectrum .…”