Charge-carrier Spectra in Semiconducting ...

Functionalization of a semiconductor nanowire has been investigated by thin molecular layer which forms misfit dislocations. The way is shown that how it causes the electron spectra tuning. The self-consistent system of equations is derived. The system describes a charge carrier quantization in a semiconductor nanowire, incommensurate molecular structure, interaction of extra carrier in a nanowire, and molecular electric dipoles. The misfit dislocations create periodic quantum barriers for electrons that are relatively narrow and quantum wells for holes simultaneously. Change of the dislocation type or the dipoles orientation leads to mutual transformation of the hole and electron spectra. In turn, the carrier leads to the dislocation rearrangement. The misfit layer reconstructs nanowire electron superlattice spectra and creates different conditions of localization or tunnelling for holes and electrons dependent on orientation of the molecules.