Magnetic Circular Dichroism in 2D Colloidal Semiconductor Nanocrystals

Magnetic circular dichroism (MCD) spectra were measured for colloidal CdSe/CdS core–wing nanoplatelets (NPLs). MCD spectra of CdSe cores demonstrate well resolved features which could be attributed to excitonic transitions from heavy hole, light hole and split-off sublevels. A 1 / D 0 , B 0 / D 0 MCD characteristic terms were determined. The values of A 1 / D 0 , B 0 / D 0 terms have no dependence on NPL thickness and are very close to the corresponding values in organic molecules.