Representative longitudinal optical phonon modes in polar semiconductor quantum dots

Highlights: ► We model the exciton-longitudinal optical phonon coupling for cylinder quantum dot. ► We predict a representative optical phonon mode for GaAs/AlAs quantum dot. ► Huang–Rhys factors increases with radius decreasing of GaAs/AlAs quantum dot. - Abstract: Existence of representative longitudinal optical (LO) phonon modes is theoretically discussed for the case of polar semiconductor cylindrical quantum dots embedded in a semiconductor matrix. The approach is developed within the dielectric continuum model considering the Fröhlich interaction between electrons and the confined LO phonons. The theory is applied to cylindrical GaAs/AlAs quantum dots within an adiabatic treatment.