We investigate the energy relaxation segmentation in a resonant tunneling heterostructures by assessing the optical and transport dynamics of non-equilibrium charge carriers. The electrical and optical properties are analyzed using electronic transport measurements combined with electro- and photoluminescence spectroscopies in continuous-wave mode. The radiative recombination is mainly governed by the creation of heavy holes \textit{via} impact ionization processes. Our results suggest hot electrons and holes populations form independent non-equilibrium systems that do not thermalize among them and with the lattice. Consequently, the carriers effective temperature changes independently at different regions of the heterostructure, with a population distribution for holes colder than for electrons.
@article{arxiv.2303.03506,
title = {Optical mapping of non-equilibrium charge carriers},
author = {E. David Guarin Castro and A. Pfenning and F. Hartmann and G. Knebl and M. Daldin Teodoro and Gilmar E. Marques and S. Höfling and G. Bastard and V. Lopez-Richard},
journal= {arXiv preprint arXiv:2303.03506},
year = {2023}
}
Comments
This version of the manuscript was submitted to the Journal of the Physical Chemistry C. The revised published version can be found at https://pubs.acs.org/doi/10.1021/acs.jpcc.1c02173