Abstract
Magnetophotoluminescence spectroscopy of unintentionally doped thin CdTe/(Cd,Mn)Te single and double quantum wells (QW’s) revealed a pronounced excitonic transition that can be associated with either an exciton bound to a neutral donor or a negatively charged exciton Comparative experimental study and theoretical analysis of this transition in quantum wells of different thicknesses allowed us to attribute it to the complex in a single QW and to the state in the double QW. A record binding energy of 3.7 meV has been detected. The double QW structure was shown to be favorable for the formation of in the wide well due to the efficient interwell electron tunneling.
- Received 17 December 1997
DOI:https://doi.org/10.1103/PhysRevB.58.4082
©1998 American Physical Society