Key points are not available for this paper at this time.
We report on photoluminescence excitation spectroscopy performed on several (Zn, Cd)Se/ZnSe quantum wells at low temperature. Experimental results are compared with a calculation of the heavy- and light-hole excitonic transition energies. It is shown that the energy difference between the first heavy- and light-hole transitions E1H1 and E1L1 can be very sensitive to the valence-band offset under some circumstances, making a determination of this parameter then possible. The strain-free relative valence-band offset is found qv0=13%±2%. The heavy-hole excitons are type-I excitons, whereas the light-hole excitons are type-II excitons.
Guénaud et al. (Tue,) studied this question.