Effect of Exciton-Longitudinal Optical Phonon Interaction οn Exciton Binding Energies in ZnS/MgxBeyZn1-x-yS Quantum Wells |
| C. Onoderaa and M. Yoshida b
aElectronic Engineering Course, Aomori Prefectural Towada Technical Senior High School, 215-1 Shimotai Sanbongi, Towada, Aomori 034-0001, Japan bHachinohe National College of Technology, 16-1 Uwanotai, Tamonoki, Hachinohe, Aomori 039-1192, Japan |
| Received: January 29, 2010; in final form: March 3, 2010 |
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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. |
| DOI: 10.12693/APhysPolA.118.643 PACS numbers: 73.21.Fg, 78.20.Bh, 81.05.Dz |