Quantum size effects for an exciton attached to a spherical quantum dot are calculated by a variational approach. The band line-ups are assumed to be type-II with finite offsets. The dependence of the exciton binding energy upon the dot radius and the offsets is studied for different sets of electron and hole effective masses.
@article{arxiv.cond-mat/9503137,
title = {Excitons in type-II quantum dots: Finite offsets},
author = {U. E. H. Laheld and F. B. Pedersen and P. C. Hemmer},
journal= {arXiv preprint arXiv:cond-mat/9503137},
year = {2009}
}