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We study the effects of exciton-longitudinal optical phonon interaction on the exciton binding energies in ZnS/MgxBeyZn1-x-yS single quantum wells. The heavy- and light-hole exciton binding energies increase to the exciton-logitudinal optical phonon interaction. The increase in the maximum heavy-hole (light-hole) exciton binding energy for x = 0.74 is 68.3 meV (55.0 meV). In narrow ZnS/MgxBeyZn1-x-yS single quantum wells SQWs, the heavy- and light-hole exciton binding energies exceed the longitudinal optical phonon energy of ZnS when x >= 0.1.

acta physica polonica. a

Effect of Exciton-Longitudinal Optical Phonon Interaction οn Exciton Binding Energies in ZnS/MgxBeyZn1-x-yS Quantum Wells