Diamagnetic excitons and the indium antimonide energy band parameters

Abstract

The oscillatory absorption edge spectrum of InSb crystals exhibiting the discrete structure of the Wannier-Mott exciton a t H = 0 is studied a t 1.8 K in magnetic fields of up to 80 kOe.The experimental data obtained are analyzed with a computer taking into account the excitonic nature of the phenomenon and the effect on the Landau levels of the nonlocality of potential resulting from the electron4ectron exchange interaction. A set of band parameters i s presented which provides a minimum discrepancy between the theoretical and experimental spectra of not more than 0.65 meV per datum point: E,=23.42 eV, F = -

Multiscale in modelling and validation for solar photovoltaics

“…Within a simplified model, optical excitation of a QD preserves the symmetry of the wave function and, hence, both a photoexcited electron and a hole are characterized by the same set of quantum numbers that determine the angular momentum (l) and the number of nodes in its radial component (n) [133]. As a result, the energies of photoexcited electrons (E e ) and holes (E h ) indicates that the energy of a photon in excess of the energy gap, (h w À E g ), is distributed between the electron and the hole in inverse proportion to their effective masses m e and m h , i.e.…”