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We present a comparative study of two self-assembled quantum dot (QD) systemsbased on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-opticaltechniques we investigated a large population of individual QDs. The systematicphotoluminescence studies of emission lines related to the recombination ofneutral exciton X, biexciton XX, and singly charged excitons (X$^+$, X$^-$)allowed us to determine average parameters describing CdTe QDs (CdSe QDs): X-XXtransition energy difference 12 meV (24 meV); fine-structure splitting$\delta_{1}=$0.14 meV ($\delta_{1}=$0.47 meV); $g$-factor $g=$2.12 ($g=$1.71);diamagnetic shift $\gamma=$2.5 $\mu$eV$/$T$^{2}$ ($\gamma=$1.3$\mu$eV$/$T$^{2}$). We find also statistically significant correlations betweenvarious parameters describing internal structure of excitonic complexes.

Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots