Exciton Binding Energy under Electric Field in ZnTe1-xSx/ZnS Strained-Layer Superlattices
Conduction and valence band offsets in ZnTe1-xSx/ZnS strained-layer superlattices (SLSs) are calculated as a function of sulfur (S) concentration ($x$). The valence band offsets markedly decreases with increasing $x$ because the energy difference between the band gaps ZnS and ZnTe1-xSx decreases with increasing $x$. Exciton binding energy in the ZnTe1-xSx/ZnS SLSs decreases with increasing ZnTe1-xSx and ZnS layer thickness. This system has two exciton systems under an applied electric field. The energy splitting of the exciton systems increases with increasing electric field strength.
- Japanese journal of applied physics. Pt. 1, Regular papers & short notes
Japanese journal of applied physics. Pt. 1, Regular papers & short notes 45(7), 5832-5835, 2006-07-15
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics