The position dependent band gap in Kane-type quantum dots


Babayev A. M.

PHYSICA SCRIPTA, cilt.74, ss.267-270, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 74 Konu: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1088/0031-8949/74/2/021
  • Dergi Adı: PHYSICA SCRIPTA
  • Sayfa Sayıları: ss.267-270

Özet

The energy spectrum of electrons in narrow band gap semiconductor nanocrystals which have position dependent band gap in an external non-uniform electric field which compensate the position dependence of the band edge of the valence band potential is studied theoretically taking into account the non-parabolicity of electrons in dispersion laws. The exact solutions of the Kane equations with strong spin-orbital interaction are determined via the band-gap changes as a function of position. The band edge gap potential is taken as the ring-shaped non-spherical oscillator potential V (r) = (gamma r(2))/(2) + (a)/(r(2)) + (b)/(r(2)sin(2) theta).