Monte Carlo studies of ground state and optical properties of multiexcitonic complexes in semiconductors

Excitonic complexes, consisting of several electron-hole pairs bound by mutual Coulomb interactions, play an important role in the photoluminescence of direct- and indirect-gap semiconductors and semiconductor impurities. We calculate the ground-state and optical properties of several multiexciton systems within the spherical effective mass approximation, focusing on the role of interparticle correlations which have not been adequately accounted for in previous calculations. We employ a model of these complexes including particle pair correlations and excitonic effects, using the variational method along with Monte Carlo methods to calculate binding energies and ground-state expectation values. Transition matrix elements are studied with various extensions of the Monte Carlo method to obtain information on optical properties.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Cancio, Antonio Christopher

Contributors dc:contributor

• Chang, Yia-Chung

• Physics, Condensed Matter

Statement dc:rights

• Copyright 1994 Cancio, Antonio Christopher

Language dc:language

eng

Identifier

AAI9416341
(UMI)AAI9416341

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20700