| EXCITONS IN SMALL PERIOD GaAs/GaAlAs SUPERLATTICES (1987) | |||||||||||||||
Abstract | |||||||||||||||
| We report the optical determination of exciton binding energies in small period GaAs/Ga0./Al0.3As superlattices by means of low temperature photoluminescence excitation spectroscopy and photoluminescence spectroscopy as a function of temperature. The heavy-hole exciton binding energy decreases with superlattice period. Our experimental findings are in agreement with a variational calculation. | |||||||||||||||
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