| Full text | |
| Author(s): |
Cardozo de Oliveira, E. R.
[1]
;
Naranjo, A.
[1]
;
Pfenning, A.
[2, 3]
;
Lopez-Richard, V
[1]
;
Marques, G. E.
[1]
;
Worschech, L.
[2, 3]
;
Hartmann, F.
[2, 3]
;
Hofling, S.
[2, 3]
;
Teodoro, M. D.
[1]
Total Authors: 9
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Wurzburg, Rontgen Ctr Complex Mat Syst RCCM, D-97074 Wurzburg - Germany
[3] Univ Wurzburg, Tech Phys, Phys Inst, D-97074 Wurzburg - Germany
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW APPLIED; v. 15, n. 1 JAN 22 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We study the magneto-transport and magnetoelectroluminescence properties of purely n-doped GaAs/Al0.6Ga0.4 As resonant-tunneling diodes with an In0.15Ga0.85 As quantum well and an emitter prewell. Before the resonant-current condition, magneto-transport measurements reveal charge-carrier densities comparable for diodes with and without the emitter prewell. Landau-level splitting is observed in the electroluminescence emission from the emitter prewell, enabling the determination of the charge-carrier buildup. Our findings show that magnetoelectroluminescence spectroscopy techniques provide useful insights into the charge-carrier dynamics in resonant-tunneling diodes and comprise a versatile tool to complement magneto-transport techniques. This approach might pave the way for the development of potentially more efficient optoelectronic resonant-tunneling devices by, e.g., monitoring voltage-dependent charge accumulation for the improvement of built-in fields and hence the maximization of the photodetector efficiency and/or the minimization of optical losses. (AU) | |
| FAPESP's process: | 18/01914-0 - Functionalizing the optical emission in quantum tunneling nanostructures in different spectral intervals |
| Grantee: | Marcio Daldin Teodoro |
| Support type: | Regular Research Grants |
| FAPESP's process: | 13/18719-1 - Electronic carriers dynamics in semiconductor nanostructures |
| Grantee: | Marcio Daldin Teodoro |
| Support type: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 14/02112-3 - Optical and transport phenomena in nano-devices |
| Grantee: | Victor Lopez Richard |
| Support type: | Regular Research Grants |