Growth temperature dependent radiative relaxation in AlGaAs/GaAs multiple quantum wells

Abstract
Decay times of photoexcited electrons in AlGaAs/GaAs multiple quantum wells are evaluated using a time-correlated photon counting method. The decay time was observed to increase with crystal growth temperature between 600 and 730 °C for metalorganic chemical vapor deposition. It also increased with the photoluminescence sample temperature, in agreement with theoretical considerations based on Fermi’s golden rule.