We investigate by time-resolved spectroscopy the consequences of large internal electric fields on the exciton recombination dynamics in ZnO/(Zn,Mg)O quantum wells.
Excitons recombination dynamics in ZnMgO alloy have been studied by time-resolved photoluminescence according to temperature. At low temperature, localization effects of the exciton are found to play a significant role. The photoluminescence (PL) decays are bi-exponential. The short lifetime has a constant value, whereas the long lifetime shows...
The optical properties of homoepitaxial non-polar (Zn,Mg)O/ZnO single quantum wells (QWs) grown by molecular beam epitaxy on a-plane (11-20) ZnO substrates are investigated by using reflectance and continuous wave photoluminescence spectroscopies. The reflectivity and CW-PL spectra measured at low temperature reveal strong in-plane optical...
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Excitons complexes in ZnO/(Zn, Mg)O non-polar quantum well have been studied by usingcontinuous-wave photoluminescence according to temperature and to the density of excitation.The spectrum of photoluminescence of the quantum well consists of three different lines. Theratio between the intensities of these lines depends of the temperature but...