Electro-Optical Properties of Excitons in CdSe Nanoplatelets

We present a theoretical calculation of optical functions for CdSe Nanoplatelets with excitons, in an external homogeneous electric field of an arbitrary strength. We consider various configurations, with the external field parallel and perpendicular to the platelet growth axis. With the help of the real density matrix approach, we calculate the linear electro-optical functions of CdSe nanoplatelets, taking into account the effect of a dielectric confinement on excitonic states. The impact of platelet geometry (thickness, lateral dimension), and on the applied field strength, on the spectrum, is discussed.