Polarimetry-based analysis of dipolar transitions of single colloidal CdSe/CdS dot-in-rods
Optics
2015-04-20 v1
Abstract
We prove experimentally, upon polarization analysis performed on a large statistic of single nanoemitters, that high quality core/shell CdSe/CdS dot-in-rods behave as linear dipoles. Moreover, the dipole in-plane and out-of-plane orientations could be assessed. We demonstrate in particular that, contrary to expectations, the emitting dipole is not aligned with the elongated axis of the dot-in-rod. Besides, the polarimetric measurements prove that the excitation transition cannot be approximated by a single linear dipole, contrary to the emission transition. Finally, we highlight that non-radiative channels of charge carrier recombination do not affect the dipolar nature of the radiative transitions.
Keywords
Cite
@article{arxiv.1401.1030,
title = {Polarimetry-based analysis of dipolar transitions of single colloidal CdSe/CdS dot-in-rods},
author = {Clotilde Lethiec and Ferruccio Pisanello and Luigi Carbone and Alberto Bramati and Laurent Coolen and Agnès Maître},
journal= {arXiv preprint arXiv:1401.1030},
year = {2015}
}