D L Ferreira and J L A Alves
Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Caixa Postal 110, CEP 36.300-000, São João del-Rei, Minas Gerais, Brazil
D L Ferreira and J L A Alves 2004 Nanotechnology 15 975
The optical absorption coefficient of an inhomogeneous quantum dot system is calculated analytically and numerically. The quantum dots are approximated as spheres whose surfaces constitute infinite potential barriers, with a size distribution described by a Gaussian function. The effects of size nonuniformity on the optical absorption spectrum of quantum dot systems are analysed. The effects of shape are also discussed through the comparison of these results to those relating to cubic quantum dots. It is shown that the optical absorption spectrum of spherical quantum dots depends strongly on the dot size distribution and that, although the curves obtained for cubic and spherical quantum dots with comparable volumes are similar, there are differences in the relative energy positions and relative intensities of the optical absorption peaks.
Condensed matter: electrical, magnetic and optical
Issue 8 (August 2004)
Received 1 March 2004
Published 15 June 2004
D L Ferreira and J L A Alves 2004 Nanotechnology 15 975
Tadashi Ishida et al 2009 Nanotechnology 20 065705
B G Gokhale and S N Shukla 1970 J. Phys. B: At. Mol. Phys. 3 1392
J B Griffiths and P Docherty 2002 Class. Quantum Grav. 19 L109