Optical Mapping of Nonequilibrium Charge Carriers
| Autor: | Andreas Pfenning, Gérald Bastard, Lopez-Richard, S. Hoefling, Georg Knebl, G. E. Marques, M. Daldin Teodoro, E. D. Guarin Castro, Fabian Hartmann |
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| Jazyk: | angličtina |
| Předmět: |
Condensed Matter - Materials Science
Quantum Physics Materials science Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Non-equilibrium thermodynamics Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Optical mapping Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Charge carrier Physical and Theoretical Chemistry Quantum Physics (quant-ph) |
| Zdroj: | The Journal of Physical Chemistry |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.1c02173 |
| Popis: | 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. Comment: 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 |
| Databáze: | OpenAIRE |
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